SIST EN 300 182-1:2000
(Main)Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification
Update references from ETS 300 102-1 and associated I-ETSs to ETS 300 403.
Digitalno omrežje z integriranimi storitvami (ISDN) - Dopolnilna storitev: obvestilo o ceni (AOC) - Protokol digitalne naročniške signalizacije št. 1 (DSS1) - 1. del: Specifikacija protokola
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
3SIST EN 300 182-1:
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Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary
service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification
Ta slovenski standard je istoveten z: EN 300 182-1 V1.2.4
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
3SIST EN 300 182-1: en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 300 182-1 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Advice of Charge (AOC) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification
2 EN 300 182-1 V1.2.4 (1998-06)
Reference
REN/SPS-05145-K-1 (1oo90iqo.PDF)
Keywords
ISDN, AOC, DSS1, supplementary service
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Copyright Notification
No part may be reproduced except as authorized by written permission.
The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1998.
All rights reserved.
ETSI
3 EN 300 182-1 V1.2.4 (1998-06)
Contents
Intellectual Property Rights. 4
Foreword. 4
1 Scope . 6
2 Normative references. 6
3 Definitions. 7
4 Abbreviations.8
5 Description . 8
5.1 General description.8
5.2 Charging information at call set-up time (AOC-S).9
5.3 Charging information during the call (AOC-D).9
5.4 Charging information at the end of the call (AOC-E).9
6 Operational requirements . 9
6.1 Provision and withdrawal.9
6.2 Requirements on the originating network side.10
6.3 Requirements on the destination network side .10
7 Coding requirements. 10
7.1 General .10
7.2 Coding of the Facility information element components.10
8 State definitions. 14
9 Signalling procedures at the coincident S and T reference point . 14
9.1 Activation, deactivation and registration .14
9.1.1 Normal operation .14
9.1.2 Exceptional procedures.15
9.2 Invocation and operation.16
9.2.1 Transfer of charging information in the call establishment phase .16
9.2.1.1 Normal operation.16
9.2.1.2 Exceptional procedures .17
9.2.2 Transfer of charging information in the Active state.17
9.2.2.1 Normal operation.17
9.2.2.2 Exceptional procedures .18
9.2.3 Transfer of charging information in the call clearing phase.18
9.2.3.1 Normal operation.18
9.2.3.2 Exceptional procedures .19
9.2.4 Transfer of charging information independent of a bearer at the user-network interface.20
9.2.4.1 Normal operation.20
9.2.4.2 Exceptional procedures .20
10 Procedures for interworking with private ISDNs . 21
11 Interactions with other networks. 21
12 Interactions with other supplementary services. 21
13 Parameter values (timers). 21
14 Dynamic description (SDL diagrams). 21
Annex A (informative): Signalling flows . 32
Annex B (informative): Changes with respect to the previous ETS 300 182-1. 37
History. 38
ETSI
4 EN 300 182-1 V1.2.4 (1998-06)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in
SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect
of ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can
be given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server) which
are, or may be, or may become, essential to the present document.
Foreword
This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling
Protocols and Switching (SPS).
The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. one (DSS1)
protocol specification for the Integrated Services Digital Network (ISDN) Advice of Charge (AOC) supplementary
service, as described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
In accordance with CCITT Recommendation I.130, the following three level structure is used to describe the
supplementary telecommunications services as provided by European public telecommunications operators under the pan-
European Integrated Services Digital Network (ISDN):
- Stage 1: is an overall service description, from the user's standpoint;
- Stage 2: identifies the functional capabilities and information flows needed to support the service described in
stage 1; and
- Stage 3: defines the signalling system protocols and switching functions needed to implement the service described
in stage 1.
The present document details the stage 3 aspects (signalling system protocols and switching functions) needed to support
the Advice of Charge (AOC) supplementary service. The stage 1 and stage 2 aspects are detailed in ETSs 300 178 to 180
and ETS 300 181, respectively.
The present version updates the references to the basic call specifications.
ETSI
5 EN 300 182-1 V1.2.4 (1998-06)
National transposition dates
Date of adoption of this EN: 19 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI
6 EN 300 182-1 V1.2.4 (1998-06)
1 Scope
This first part of EN 300 182 specifies the stage three of the Advice of Charge (AOC) supplementary service for the pan-
European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at
the T reference point or coincident S and T reference point (as defined in CCITT Recommendation I.411 [1]) by means of
the Digital Subscriber Signalling System No. one (DSS1). Stage three identifies the protocol procedures and switching
functions needed to support a telecommunications service (see CCITT Recommendation I.130 [2]).
In addition, the present document specifies the protocol requirements at the T reference point where the service is
provided to the user via a private ISDN.
The present document does not specify the additional protocol requirements where the service is provided to the user via
a telecommunications network that is not an ISDN.
Three AOC supplementary services exist:
a) Charging information at call set-up time (AOC-S)
The AOC-S supplementary service enables a user to receive information about the charging rates at call set-up
time and also to receive further information during the call if there is a change of charging rates.
b) Charging information during the call (AOC-D)
The AOC-D supplementary service enables a user to receive information on the recorded charges for a call during
the active phase of the call.
c) Charging information at the end of the call (AOC-E)
The AOC-E supplementary service enables a user to receive information on the recorded charges for a call when
the call is terminated.
The AOC supplementary service is applicable to all circuit-switched telecommunication services.
Further parts of the present document specify the method of testing required to identify conformance to the present
document.
The present document is applicable to equipment, supporting the AOC supplementary service, to be attached at either side
of a T reference point or coincident S and T reference point when used as an access to the public ISDN.
2 Normative references
References may be made to:
a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in which
case, subsequent revisions to the referenced document do not apply; or
b) all versions up to and including the identified version (identified by "up to and including" before the version
identity); or
c) all versions subsequent to and including the identified version (identified by "onwards" following the version
identity); or
d) publications without mention of a specific version, in which case the latest version applies.
A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] CCITT Recommendation I.411 (1988): "ISDN user-network interfaces - Reference configurations".
[2] CCITT Recommendation I.130 (1988): "Method for the characterisation of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[3] CCITT Recommendation I.112: "Vocabulary of terms for ISDNs".
ETSI
7 EN 300 182-1 V1.2.4 (1998-06)
[4] CCITT Recommendation I.210: "Principles of telecommunication services supported by an ISDN
and the means to describe them".
[5] EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1:
Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[6] ETS 300 178 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at call set-up time (AOC-S); Service description".
[7] ETS 300 179 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information during the call (AOC-D); Service description".
[8] ETS 300 180 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charging
information at the end of the call (AOC-E); Service description".
[9] CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax Notation One (ASN.1)".
[10] CCITT Recommendation X.219 (1988): "Remote Operations: Model, Notation and Service
Definitions".
[11] EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for the
support of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[12] EN 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".
[13] CCITT Recommendation Z.100 (1988): "Functional Specification and Description Language
(SDL)".
3 Definitions
For the purposes of the present document, the following definitions apply:
activation: Implies either a user request for AOC supplementary service(s) or a network performed activation of the
subscribed AOC supplementary service(s) whenever the served user makes an outgoing call.
NOTE 1: The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], defines
activation as being performed at the time of subscription.
basic communication: This charged item indicates the rate to be applied for the connection to the called user.
billing identification: Elements for billing identification inform the served user that the associated charges have been
incurred due to the indicated situation (e.g. a call that has been forwarded at the served user's access).
call attempt: This charged item indicates the cost applied for a call which has been sent to the called user, but the called
user has not yet answered the call.
call control message: A message as defined in ETS 300 403-1 [5], subclause 3.1, which on sending or receipt causes a
change of the call state at either the network or the user.
call setup: This charged item indicates the cost applied for the connection to the called user when the called user answers
the call.
charging information: Information sent to a user in an invoke component or a return result component showing charging-
related information (i.e. either charging rate information, special charging rates, or the recorded charges for the call).
continuous: See subclause A.2.3.1 of ETS 300 178 [6].
flat rate: This specific rate indicates a fixed currency value per event.
Integrated Services Digital Network (ISDN): See CCITT Recommendation I.112 [3], § 2.3, definition 308.
ETSI
8 EN 300 182-1 V1.2.4 (1998-06)
invocation: Implies the sending of charging information from the network to the served user.
NOTE 2: The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], defines
invocation as either a user request for an AOC supplementary service or as the network invocation for all
calls.
invoke component: See EN 300 196-1 [11], subclause 8.2.2.1.
network: The DSS1 protocol entity at the network side of the user-network interface.
operation of supplementary services: This charged item indicates the cost applied for the operation of requested
supplementary services.
recorded charges: This information indicates the number of charging units or currency units incurred for a call.
return error component: See EN 300 196-1 [11], subclause 8.2.2.3.
return result component: See EN 300 196-1 [11], subclause 8.2.2.2.
served user: The user of a particular ISDN number, who is requesting that charging information should be provided (for
all calls or on request).
service: Telecommunications service: see CCITT Recommendation I.112 [3], § 2.2, definition 201.
special charging arrangement: This charged item indicates that a special charging arrangement exists for calculating the
cost of the call.
NOTE 3: The use of this charged item is outside the scope of the standard. It is a matter for the network operator and
the user to which it is sent.
special charging code: This specific code indicates a rate which can identify a charging algorithm that can be used as a
basis for determining the cost of a call.
step function: See subclause A.2.3.1 of ETS 300 178 [6].
supplementary service: See CCITT Recommendation I.210 [4], § 2.4.
user: The DSS1 protocol entity at the user side of the user-network interface.
user-to-user information transfer: This charged item indicates the rate to be applied to the transfer of user-to-user
information.
4 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AOC Advice of Charge
AOC-D AOC during the call
AOC-E AOC at the end of the call
AOC-S AOC at call set-up time
ASN.1 Abstract Syntax Notation One
DSS1 Digital Subscriber Signalling System No. one
ISDN Integrated Services Digital Network
5 Description
5.1 General description
Depending on subscription by the served user, charging information for any of the three supplementary services may be
provided either:
ETSI
9 EN 300 182-1 V1.2.4 (1998-06)
- for all calls; or
- for any call, after a user request to provide charging information.
The charging information given shall relate to the charges incurred on the network to which the user is attached.
Charging information for applications using higher layer protocols which are not defined as teleservices, shall be based
on the bearer services specified.
5.2 Charging information at call set-up time (AOC-S)
When the AOC-S supplementary service is activated, the network shall provide the user with information about the
charging rates at call establishment. In addition, the network shall inform the served user if a change in charging rates
takes place during the call.
The network shall provide the charging information during call establishment or at the latest at call connection. When
there is a change in the charging rate during the call, the network shall send information about the new charging rate to the
served user.
5.3 Charging information during the call (AOC-D)
When the AOC-D supplementary service is activated, the network shall provide the user with charging information for a
call during the active phase of a call. The network shall provide the charging information and transfer it to the served user
in an appropriate message. The supplied charging information shall be provided as a cumulative charge incurred so far for
the call (i.e. charges recorded from the start of the call and until the moment the charging information is sent to the served
user).
When the call is released, the network shall send the recorded charges for the call to the served user in one of the call
control messages clearing the call.
If the network has determined that the call is free of charge, then the network shall send a free-of-charge indication in the
first subsequent message sent to the served user. The network shall not send any further charging information during the
call. When the call is released, the network shall send the charged amount (zero) in a call control message clearing the
call.
5.4 Charging information at the end of the call (AOC-E)
When the AOC-E supplementary service is activated, the network shall provide the served user with charging information
indicating the recorded charges for a call when the call is released. The network shall send the charging information to the
served user in one of the call control messages clearing the call.
6 Operational requirements
6.1 Provision and withdrawal
These supplementary services shall be provided separately by arrangement with the service provider or be generally
available. Withdrawal of the service shall be made at subscriber request or for administrative reasons.
The following subscription options exist for each of the three AOC supplementary services, as defined in table 1.
Table 1: Advice of charge subscription options
Subscription options Value
Provision of service 1. For all calls; or
2. On request on a per call basis.
ETSI
10 EN 300 182-1 V1.2.4 (1998-06)
6.2 Requirements on the originating network side
For the purpose of the present document, the served user of the AOC supplementary service is connected to the originating
network.
The originating network shall make available the type of charging information that is indicated, related to a certain call.
The originating network shall assemble the appropriate charging information, according to the service requirements, and
send it to the user.
NOTE: The charging information may either be generated at the originating network, or generated elsewhere and
sent to the originating network, in due time for the information to be provided to the user according to the
procedures of the present document.
The network shall only include a charged item if the charged item contains information concerning the charges applied to
that call.
The network shall only use those charged items which are appropriate to that network charging mechanism. Thus, in some
networks, the network may, but need not, send some of these items, or combinations of items. Different networks could
give information about the same call in different ways.
If the served user suspends a call, then, as a network option, the originating network shall retain the charging information
for the suspended call as long as the network retains the call identity of the suspended call of the served user.
6.3 Requirements on the destination network side
None identified.
7 Coding requirements
7.1 General
The charging information that the network shall convey to the served user may consist of a number of information units.
The information to be transferred is specified in clause 5 of the stage 1 service descriptions ETS 300 178 [6],
ETS 300 179 [7], and ETS 300 180 [8].
7.2 Coding of the Facility information element components
Table 2 shows the definition of the operations and errors required for the AOC supplementary service using Abstract
Syntax Notation one (ASN.1) as defined in CCITT Recommendation X.208 [9] and using the OPERATION and ERROR
macro as defined in CCITT Recommendation X.219 [10], figure 4/X.219.
The formal definition of the component types to encode these operations and errors is provided in EN 300 196-1 [11],
annex D, clause D.1.
The inclusion of components in Facility information elements is defined in EN 300 196-1 [11], subclause 11.1.
Table 2: Definition of operations and errors for the AOC supplementary services
Advice-of-Charge-Operations {ccitt identified-organization etsi (0) 182 operations-and-errors
(1)}
DEFINITIONS IMPLICIT TAGS ::=
BEGIN
EXPORTS ChargingRequest, AOCSCurrency, AOCSSpecialArr,
AOCDCurrency, AOCDChargingUnit, AOCECurrency, AOCEChargingUnit,
NoChargingInfoAvailable, ChargingAssociation;
IMPORTS OPERATION, ERROR
ETSI
11 EN 300 182-1 V1.2.4 (1998-06)
FROM Remote-Operation-Notation
{joint-iso-ccitt remote-operations (4) notation (0)}
notSubscribed, notAvailable, notImplemented, invalidCallState
FROM General-Errors
{ccitt identified-organization etsi (0) 196 general-errors (2)}
PartyNumber
FROM Addressing-Data-Elements
{ccitt identified-organization etsi (0) 196 addressing-data-elements (6)};
ChargingRequest ::= OPERATION
ARGUMENT ChargingCase
RESULT CHOICE {
AOCSCurrencyInfoList,
AOCSSpecialArrInfo,
chargingInfoFollows NULL}
ERRORS {notSubscribed, notAvailable, notImplemented,
invalidCallState, NoChargingInfoAvailable}
AOCSCurrency ::= OPERATION -- AOC-S given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCSCurrencyInfoList }
AOCSSpecialArr ::= OPERATION -- AOC-S for special charging arrangement
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCSSpecialArrInfo }
AOCDCurrency ::= OPERATION -- AOC-D given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCDCurrencyInfo }
AOCDChargingUnit ::= OPERATION -- AOC-D given in charging units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCDChargingUnitInfo }
AOCECurrency ::= OPERATION -- AOC-E given in currency units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCECurrencyInfo }
AOCEChargingUnit ::= OPERATION -- AOC-E given in charging units
ARGUMENT CHOICE {
chargeNotAvailable NULL,
AOCEChargingUnitInfo }
ChargingCase ::= ENUMERATED {
chargingInformationAtCallSetup (0),
chargingDuringACall (1),
chargingAtTheEndOfACall (2) }
Table 2 (continued): Definition of operations and errors for the AOC supplementary services
AOCSCurrencyInfoList ::= SEQUENCE SIZE (1.10) OF AOCSCurrencyInfo
AOCSCurrencyInfo ::= SEQUENCE {
chargedItem ChargedItem,
CHOICE {
specificCurrency CHOICE {
durationCurrency [1] DurationCurrency,
flatRateCurrency [2] FlatRateCurrency,
volumeRateCurrency [3] VolumeRateCurrency},
specialChargingCode SpecialChargingCode,
freeOfCharge [4] NULL,
currencyInfoNotAvailable [5] NULL} }
AOCSSpecialArrInfo ::= INTEGER (1.10)
ChargedItem ::= ENUMERATED {
basicCommunication (0),
callAttempt (1),
callSetup (2),
userToUserInfo (3),
operationOfSupplementaryServ (4) }
ETSI
12 EN 300 182-1 V1.2.4 (1998-06)
DurationCurrency ::= SEQUENCE {
dCurrency [1] Currency,
dAmount [2] Amount,
dChargingType [3] ChargingType,
dTime [4] Time,
dGranularity [5] Time OPTIONAL }
FlatRateCurrency ::= SEQUENCE {
fRCurrency [1] Currency,
fRAmount [2] Amount }
VolumeRateCurrency ::= SEQUENCE {
vRCurrency [1] Currency,
vRAmount [2] Amount,
vRVolumeUnit [3] VolumeUnit}
SpecialChargingCode::= INTEGER (1.10)
AOCDCurrencyInfo ::= CHOICE {
specificCurrency SEQUENCE {
recordedCurrency [1] RecordedCurrency,
typeOfChargingInfo [2] TypeOfChargingInfo,
aOCDBillingId [3] AOCDBillingId OPTIONAL },
freeOfCharge [1] NULL}
AOCDChargingUnitInfo ::= CHOICE {
specificChargingUnits SEQUENCE {
recordedUnitsList [1] RecordedUnitsList,
typeOfChargingInfo [2] TypeOfChargingInfo,
aOCDBillingId [3] AOCDBillingId OPTIONAL },
freeOfCharge [1] NULL}
RecordedCurrency ::= SEQUENCE {
rCurrency [1] Currency,
rAmount [2] Amount }
RecordedUnitsList ::= SEQUENCE SIZE (1.32) OF RecordedUnits
TypeOfChargingInfo ::= ENUMERATED {
subTotal (0),
total (1)}
RecordedUnits ::= SEQUENCE {
CHOICE{
recordedNumberOfUnits NumberOfUnits,
notAvailable NULL},
recordedTypeOfUnitsTypeOfUnit OPTIONAL }
AOCDBillingId ::= ENUMERATED {
normalCharging (0),
reverseCharging (1),
creditCardCharging (2)}
ETSI
13 EN 300 182-1 V1.2.4 (1998-06)
Table 2 (continued): Definition of operations and errors for the AOC supplementary services
AOCECurrencyInfo ::= SEQUENCE {
CHOICE {
specificCurrency SEQUENCE {
recordedCurrency [1] RecordedCurrency,
aOCEBillingId [2] AOCEBillingId OPTIONAL},
freeOfCharge [1] NULL},
chargingAssociationChargingAssociation OPTIONAL}
AOCEChargingUnitInfo ::= SEQUENCE {
CHOICE {
specificChargingUnits SEQUENCE {
recordedUnitsList [1] RecordedUnitsList,
aOCEBillingId [2] AOCEBillingId OPTIONAL},
freeOfCharge [1] NULL},
chargingAssociationChargingAssociation OPTIONAL}
AOCEBillingId ::= ENUMERATED {
normalCharging (0),
reverseCharging (1),
creditCardCharging (2),
callForwardingUnconditional (3),
callForwardingBusy (4),
callForwardingNoReply (5),
callDeflection (6),
callTransfer (7)}
Currency ::= IA5String (SIZE (1.10))
Amount ::= SEQUENCE {
currencyAmount [1] CurrencyAmount,
multiplier [2] Multiplier }
CurrencyAmount ::= INTEGER (0.16777215)
Multiplier ::= ENUMERATED {
oneThousandth (0),
oneHundredth (1),
oneTenth (2),
one (3),
ten (4),
hundred (5),
thousand (6)}
Time ::= SEQUENCE {
lengthOfTimeUnit [1] LengthOfTimeUnit,
scale [2] Scale }
LengthOfTimeUnit ::= INTEGER (0.16777215)
Scale ::= ENUMERATED {
oneHundredthSecond (0),
oneTenthSecond (1),
oneSecond (2),
tenSeconds (3),
oneMinute (4),
oneHour (5),
twentyFourHours (6)}
VolumeUnit ::= ENUMERATED {
octet (0),
segment (1),
message (2) }
TypeOfUnit ::= INTEGER (1.16) -- Value 1-16
NumberOfUnits ::= INTEGER (0.16777215)
ChargingType ::= ENUMERATED {
continuousCharging (0),
stepFunction (1) }
ChargingAssociation::= CHOICE {
chargeNumber [0] EXPLICIT PartyNumber,
chargeIdentifier ChargeIdentifier}
ChargeIdentifier ::= INTEGER (-32768.32767)
ETSI
14 EN 300 182-1 V1.2.4 (1998-06)
NoChargingInfoAvailable ::= ERROR
Table 2 (concluded): Definition of operations and errors for the AOC supplementary services
chargingRequest ChargingRequest ::= 30
aOCSCurrency AOCSCurrency ::= 31
aOCSSpecialArr AOCSSpecialArr ::= 32
aOCDCurrency AOCDCurrency ::= 33
aOCDChargingUnit AOCDChargingUnit ::= 34
aOCECurrency AOCECurrency ::= 35
aOCEChargingUnit AOCEChargingUnit ::= 36
noChargingInfoAvailable NoChargingInfoAvailable ::= 26
END
8 State definitions
The following states have been defined for the user:
AOC Request: The user has sent an AOC request to the network and is waiting for a response (note).
AOC Active: An AOC supplementary service has been activated by a user on a per call basis (note).
The following states have been defined for the network:
AOC Idle: An AOC supplementary service is not activated (note).
AOC-S Activated: The AOC-S supplementary service has been activated either on a per call basis or for all calls.
AOC-D Activated: The AOC-D supplementary service has been activated either on a per call basis or for all calls.
AOC-E Activated: The AOC-E supplementary service has been activated either on a per call basis or for all calls.
AOC-S Idle: The network has sent the AOC-S charging information to the served user. This is a "waiting" condition
where either a change in the charging rate, or the suspension of the basic call occurs, or the call is cleared.
AOC-S Suspended: The AOC-S supplementary service is activated, and the served user has invoked the terminal
portability supplementary service for this call.
AOC-D Suspended: The AOC-D supplementary service is activated, and the served user has invoked the terminal
portability supplementary service for this call.
AOC-E Suspended: The AOC-E supplementary service is activated, and the served user has invoked the terminal
portability supplementary service for this call.
NOTE: These states exist for each instance of the AOC supplementary service.
9 Signalling procedures at the coincident S and
T reference point
9.1 Activation, deactivation and registration
9.1.1 Normal operation
These supplementary services may be activated on a per call basis or they may be active for all calls. The activation on a
per-call basis is only active for the lifetime of that call.
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15 EN 300 182-1 V1.2.4 (1998-06)
If an AOC supplementary service is subscribed to for all calls, no signalling procedure is defined for the activation of the
service. The network shall automatically activate the subscribed AOC supplementary service at each call setup.
To activate an AOC supplementary service, the user shall include in the SETUP message a Facility information element
containing a ChargingRequest invoke component. The ChargingRequest invoke component shall indicate the AOC
supplementary service to be activated. Each AOC supplementary service is activated independently and one, two, or three
activations can thus occur in the same SETUP message.
If the network activates the requested AOC supplementary service (e.g. the served user is allowed to request the
information), the network shall acknowledge the request by returning a ChargingRequest return result component within a
Facility information element in a call control message (i.e. SETUP ACKNOWLEDGE, CALL PROCEEDING,
PROGRESS, ALERTING, or CONNECT message - whichever is appropriate). Alternatively, the network can use a
FACILITY message to convey the ChargingRequest return result component if a call control message is not available
when the information is to be sent.
If a user has requested the AOC-S supplementary service and the activation request is accepted by the network, the
procedure of subclause 9.2.1.1 shall be followed.
If a user has requested the AOC-D or AOC-E supplementary services and the activation request is accepted by the
network, the network shall send a ChargingRequest return result component to the user indicating "chargingInfoFollows".
If the user receives a correctly encoded ChargingRequest return result component, the user shall accept the provided
information and shall not respond to the network.
No signalling procedure is defined for the registration of an AOC supplementary service.
9.1.2 Exceptional procedures
The following exceptional procedures shall apply:
a) if the AOC supplementary service is activated for all calls and the network cannot provide the charging
information, the network shall, at the time it determines that the information is not available, send a Facility
information element including an AOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit,
AOCECurrency or AOCEChargingUnit invoke component indicating "chargeNotAvailable" to the user and
continue normal call handling;
b) if the user receives a correctly encoded AOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit,
AOCECurrency or AOCEChargingUnit invoke component, the user shall accept the provided information and shall
not respond to the network;
c) if the AOC supplementary service is requested on a per-call basis and the network cannot provide the charging
information, the network shall include the Facility information element containing a ChargingRequest return error
component in a call control or FACILITY message and continue the basic call. The ChargingRequest return error
component shall indicate either:
1) one of the errors from the General-Errors list; or,
2) "NoChargingInfoAvailable", whichever is appropriate.
The "NoChargingInfoAvailable" value indicates that the served user would normally receive charging information
but that in this case the information cannot be sent to the served user;
d) if the network receives a request for any of the AOC supplementary services in any other message than a SETUP
message, and item c) does not apply, then the network shall send a ChargingRequest return error component
indicating "invalidCallState" to the user;
e) if a user receives a ChargingRequest return error component from the network, the user shall not take any further
protocol action. However, the user shall continue normal call handling;
f) if a user or the network receives a reject component, no protocol actions shall be taken;
g) if the user receives no response to the ChargingRequest invoke component and subsequently receives an
AOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit, AOCECurrency or AOCEChargingUnit
invoke component, the user shall ignore this component;
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16 EN 300 182-1 V1.2.4 (1998-06)
h) if the user receives a ChargingRequest return error component or a reject component as a response to a
ChargingRequest invoke component and subsequently receives an AOCSCurrency, AOCSSpecialArr,
AOCDCurrency, AOCDChargingUnit, AOCECurrency or AOCEChargingUnit invoke component, the user shall
accept the information provided and shall not respond to the network;
i) if a user requests on a per call basis an AOC supplementary service which is activated for all calls, the network
shall acknowledge the request as specified in subclause 9.1.1. However, the network shall only send charging
information as a result of one activation of each AOC supplementary service activated.
9.2 Invocation and operation
In the following subclauses the procedures for the transfer of charging information are given.
The transfer of charging information may occur:
- during the call establishment phase (AOC-S supplementary service);
- in the Active state of a call (AOC-S and AOC-D supplementary services);
- during the call clearing phase (AOC-S, AOC-D, and AOC-E supplementary services); or,
- independent of a bearer at the user-network interface (AOC-E supplementary service).
NOTE: The transfer of charging information in an invoke component is done according to the operation class 5.
Operation class 5 implies that neither a return result component nor a return error component will be
received as an answer to an invoke component. A consequence of using this operation class is that the
sending of information in an invoke component is not a confirmed service.
9.2.1 Transfer of charging information in the call establishment phase
9.2.1.1 Normal operation
For the AOC-S supplementary service, the activation and invocation of the supplementary service is performed
simultaneously - i.e. the activation works as both an activation and an invocation of the supplementary service.
For the AOC-S supplementary service, the network shall give charging information either in currency units or as a special
charging arrangement.
NOTE: The parameters described for the AOC-S supplementary service to express the duration rate provides a
solution both for continuous charging as well as for charging with the step function method. It is up to the
network to specify the value of the parameters in a manner that it will fit with the continuous charging
method or with the step function method.
If sending AOC-S supplementary service information to the served user, the network shall include charging rate
information related only to the particular service(s) requested by the user at call setup.
When the network sends charging information to the served user in the call establishment phase, the network shall include
the Facility information element in a call control message which is sent to the user (i.e. SETUP ACKNOWLEDGE, CALL
PROCEEDING, PROGRESS, ALERTING, or CONNECT message - whichever is appropriate). Alternatively, the
network can use a FACILITY message to send charging information to the user, if a call control message is not available
when the information is to be sent.
The Facility information element shall contain information about the charging rate applicable to that call. If the AOC-S
supplementary service is activated on a per call basis, the Facility information element shall contain the chargingRequest
return result component. If the AOC-S supplementary service is activated for all calls, the Facility information element
shall contain an AOCSCurrency invoke component or an AOCSSpeciallArr invoke component. This charging information
shall consist of one of the following types:
- AOCSCurrencyInfoList; or,
- AOCSSpecialArrInfo.
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17 EN 300 182-1 V1.2.4 (1998-06)
If the user receives a correctly encoded ChargingRequest return result component, the user shall accept the provided
information and shall not respond to the network.
If the user receives a correctly encoded AOCSCurrency or AOCSSpecialArr invoke component, the user shall accept the
provided information and shall not respond to the network.
9.2.1.2 Exceptional procedures
In the case that charging information is not available in the network, the network shall inform the served user and the call
shall be allowed to continue according to normal call handling procedures.
If the AOC-S supplementary service has been activated on a per call basis and if charging information is not available
within the call establishment time, the network shall include a Facility information element within an appropriate message
sent to the user. The Facility information element shall contain the ChargingRequest return error component indicating
"NoChargingInfoAvailable".
If the user receives a correctly encoded ChargingRequest return error component, the user shall accept the reason for error
and shall not respond to the network.
If the AOC-S supplementary service is activated for all calls and if charging information is not available within the call
establishment time, the network shall include a Facility information element within an appropriate message sent to the
user. The Facility information element shall contain the invoke component indicating "chargeNotAvailable".
If the user receives a correctly encoded AOCSCurrency or AOCSSpecialArr invoke component, the user shall accept the
provided information and shall not respond to the network.
If the network receives a reject component from the user, the network shall take no further protocol actions. Normal call
handling shall continue.
9.2.2 Transfer of charging information in the Active state
9.2.2.1 Normal operation
If the AOC-D supplementary service is offered, the originating network shall send charging information during a call. The
rate of sending messages may vary from
...
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Integrated Services Digital Network (ISDN); Advice of Charge (AOC) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 300 182-1 Version 1.2.4SIST EN 300 182-1:2000en01-januar-2000SIST EN 300 182-1:2000SLOVENSKI
STANDARD
EN 300 182-1 V1.2.4 (1998-06)European Standard (Telecommunications series)Integrated Services Digital Network (ISDN);Advice of Charge (AOC) supplementary service;Digital Subscriber Signalling System No. one (DSS1) protocol;Part 1: Protocol specificationSIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)2ReferenceREN/SPS-05145-K-1 (1oo90iqo.PDF)KeywordsISDN, AOC, DSS1, supplementary serviceETSIPostal addressF-06921 Sophia Antipolis Cedex - FRANCEOffice address650 Route des Lucioles - Sophia AntipolisValbonne - FRANCETel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16Siret N° 348 623 562 00017 - NAF 742 CAssociation à but non lucratif enregistrée à laSous-Préfecture de Grasse (06) N° 7803/88Internetsecretariat@etsi.frhttp://www.etsi.frhttp://www.etsi.orgCopyright NotificationNo part may be reproduced except as authorized by written permission.The copyright and the foregoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1998.All rights reserved.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)3ContentsIntellectual Property Rights.4Foreword.41Scope.62Normative references.63Definitions.74Abbreviations.85Description.85.1General description.85.2Charging information at call set-up time (AOC-S).95.3Charging information during the call (AOC-D).95.4Charging information at the end of the call (AOC-E).96Operational requirements.96.1Provision and withdrawal.96.2Requirements on the originating network side.106.3Requirements on the destination network side.107Coding requirements.107.1General.107.2Coding of the Facility information element components.108State definitions.149Signalling procedures at the coincident S and T reference point.149.1Activation, deactivation and registration.149.1.1Normal operation.149.1.2Exceptional procedures.159.2Invocation and operation.169.2.1Transfer of charging information in the call establishment phase.169.2.1.1Normal operation.169.2.1.2Exceptional procedures.179.2.2Transfer of charging information in the Active state.179.2.2.1Normal operation.179.2.2.2Exceptional procedures.189.2.3Transfer of charging information in the call clearing phase.189.2.3.1Normal operation.189.2.3.2Exceptional procedures.199.2.4Transfer of charging information independent of a bearer at the user-network interface.209.2.4.1Normal operation.209.2.4.2Exceptional procedures.2010Procedures for interworking with private ISDNs.2111Interactions with other networks.2112Interactions with other supplementary services.2113Parameter values (timers).2114Dynamic description (SDL diagrams).21Annex A (informative):Signalling flows.32Annex B (informative):Changes with respect to the previous ETS 300 182-1.37History.38SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)4Intellectual Property RightsIPRs essential or potentially essential to the present document may have been declared to ETSI. The informationpertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found inSR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respectof ETSI standards", which is available free of charge from the ETSI Secretariat. Latest updates are available on theETSI Web server (http://www.etsi.fr/ipr or http://www.etsi.org/ipr).Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee canbe given as to the existence of other IPRs not referenced in SR 000 314 (or the updates on the ETSI Web server) whichare, or may be, or may become, essential to the present document.ForewordThis European Standard (Telecommunications series) has been produced by ETSI Technical Committee SignallingProtocols and Switching (SPS).The present document is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. one (DSS1)protocol specification for the Integrated Services Digital Network (ISDN) Advice of Charge (AOC) supplementaryservice, as described below:Part 1:"Protocol specification";Part 2:"Protocol Implementation Conformance Statement (PICS) proforma specification";Part 3:"Test Suite Structure and Test Purposes (TSS&TP) specification for the user";Part 4:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for the user";Part 5:"Test Suite Structure and Test Purposes (TSS&TP) specification for the network";Part 6:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)proforma specification for the network".In accordance with CCITT Recommendation I.130, the following three level structure is used to describe thesupplementary telecommunications services as provided by European public telecommunications operators under the pan-European Integrated Services Digital Network (ISDN):-Stage 1: is an overall service description, from the user's standpoint;-Stage 2: identifies the functional capabilities and information flows needed to support the service described instage 1; and-Stage 3: defines the signalling system protocols and switching functions needed to implement the service describedin stage 1.The present document details the stage 3 aspects (signalling system protocols and switching functions) needed to supportthe Advice of Charge (AOC) supplementary service. The stage 1 and stage 2 aspects are detailed in ETSs 300 178 to 180and ETS 300 181, respectively.The present version updates the references to the basic call specifications.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)5National transposition datesDate of adoption of this EN:19 June 1998Date of latest announcement of this EN (doa):30 September 1998Date of latest publication of new National Standardor endorsement of this EN (dop/e):31 March 1999Date of withdrawal of any conflicting National Standard (dow):31 March 1999SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)61ScopeThis first part of EN 300 182 specifies the stage three of the Advice of Charge (AOC) supplementary service for the pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators atthe T reference point or coincident S and T reference point (as defined in CCITT Recommendation I.411 [1]) by means ofthe Digital Subscriber Signalling System No. one (DSS1). Stage three identifies the protocol procedures and switchingfunctions needed to support a telecommunications service (see CCITT Recommendation I.130 [2]).In addition, the present document specifies the protocol requirements at the T reference point where the service isprovided to the user via a private ISDN.The present document does not specify the additional protocol requirements where the service is provided to the user viaa telecommunications network that is not an ISDN.Three AOC supplementary services exist:a)Charging information at call set-up time (AOC-S)The AOC-S supplementary service enables a user to receive information about the charging rates at call set-uptime and also to receive further information during the call if there is a change of charging rates.b)Charging information during the call (AOC-D)The AOC-D supplementary service enables a user to receive information on the recorded charges for a call duringthe active phase of the call.c)Charging information at the end of the call (AOC-E)The AOC-E supplementary service enables a user to receive information on the recorded charges for a call whenthe call is terminated.The AOC supplementary service is applicable to all circuit-switched telecommunication services.Further parts of the present document specify the method of testing required to identify conformance to the presentdocument.The present document is applicable to equipment, supporting the AOC supplementary service, to be attached at either sideof a T reference point or coincident S and T reference point when used as an access to the public ISDN.2Normative referencesReferences may be made to:a)specific versions of publications (identified by date of publication, edition number, version number, etc.), in whichcase, subsequent revisions to the referenced document do not apply; orb)all versions up to and including the identified version (identified by "up to and including" before the versionidentity); orc)all versions subsequent to and including the identified version (identified by "onwards" following the versionidentity); ord)publications without mention of a specific version, in which case the latest version applies.A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the samenumber.[1]CCITT Recommendation I.411 (1988): "ISDN user-network interfaces - Reference configurations".[2]CCITT Recommendation I.130 (1988): "Method for the characterisation of telecommunicationservices supported by an ISDN and network capabilities of an ISDN".[3]CCITT Recommendation I.112: "Vocabulary of terms for ISDNs".SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)7[4]CCITT Recommendation I.210: "Principles of telecommunication services supported by an ISDNand the means to describe them".[5]EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling SystemNo. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 1:Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".[6]ETS 300 178 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charginginformation at call set-up time (AOC-S); Service description".[7]ETS 300 179 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charginginformation during the call (AOC-D); Service description".[8]ETS 300 180 (1992): "Integrated Services Digital Network (ISDN); Advice of Charge: charginginformation at the end of the call (AOC-E); Service description".[9]CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax Notation One (ASN.1)".[10]CCITT Recommendation X.219 (1988): "Remote Operations: Model, Notation and ServiceDefinitions".[11]EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for thesupport of supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;Part 1: Protocol specification".[12]EN 300 195-1: "Integrated Services Digital Network (ISDN); Supplementary service interactions;Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification".[13]CCITT Recommendation Z.100 (1988): "Functional Specification and Description Language(SDL)".3DefinitionsFor the purposes of the present document, the following definitions apply:activation: Implies either a user request for AOC supplementary service(s) or a network performed activation of thesubscribed AOC supplementary service(s) whenever the served user makes an outgoing call.NOTE 1:The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], definesactivation as being performed at the time of subscription.basic communication: This charged item indicates the rate to be applied for the connection to the called user.billing identification: Elements for billing identification inform the served user that the associated charges have beenincurred due to the indicated situation (e.g. a call that has been forwarded at the served user's access).call attempt: This charged item indicates the cost applied for a call which has been sent to the called user, but the calleduser has not yet answered the call.call control message: A message as defined in ETS 300 403-1 [5], subclause 3.1, which on sending or receipt causes achange of the call state at either the network or the user.call setup: This charged item indicates the cost applied for the connection to the called user when the called user answersthe call.charging information: Information sent to a user in an invoke component or a return result component showing charging-related information (i.e. either charging rate information, special charging rates, or the recorded charges for the call).continuous: See subclause A.2.3.1 of ETS 300 178 [6].flat rate: This specific rate indicates a fixed currency value per event.Integrated Services Digital Network (ISDN): See CCITT Recommendation I.112 [3], § 2.3, definition 308.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)8invocation: Implies the sending of charging information from the network to the served user.NOTE 2:The stage 1 description, as specified in ETS 300 178 [6], ETS 300 179 [7] and ETS 300 180 [8], definesinvocation as either a user request for an AOC supplementary service or as the network invocation for allcalls.invoke component: See EN 300 196-1 [11], subclause 8.2.2.1.network: The DSS1 protocol entity at the network side of the user-network interface.operation of supplementary services: This charged item indicates the cost applied for the operation of requestedsupplementary services.recorded charges: This information indicates the number of charging units or currency units incurred for a call.return error component: See EN 300 196-1 [11], subclause 8.2.2.3.return result component: See EN 300 196-1 [11], subclause 8.2.2.2.served user: The user of a particular ISDN number, who is requesting that charging information should be provided (forall calls or on request).service: Telecommunications service: see CCITT Recommendation I.112 [3], § 2.2, definition 201.special charging arrangement: This charged item indicates that a special charging arrangement exists for calculating thecost of the call.NOTE 3:The use of this charged item is outside the scope of the standard. It is a matter for the network operator andthe user to which it is sent.special charging code: This specific code indicates a rate which can identify a charging algorithm that can be used as abasis for determining the cost of a call.step function: See subclause A.2.3.1 of ETS 300 178 [6].supplementary service: See CCITT Recommendation I.210 [4], § 2.4.user: The DSS1 protocol entity at the user side of the user-network interface.user-to-user information transfer: This charged item indicates the rate to be applied to the transfer of user-to-userinformation.4AbbreviationsFor the purposes of the present document, the following abbreviations apply:AOCAdvice of ChargeAOC-DAOC during the callAOC-EAOC at the end of the callAOC-SAOC at call set-up timeASN.1Abstract Syntax Notation OneDSS1Digital Subscriber Signalling System No. oneISDNIntegrated Services Digital Network5Description5.1General descriptionDepending on subscription by the served user, charging information for any of the three supplementary services may beprovided either:SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)9-for all calls; or-for any call, after a user request to provide charging information.The charging information given shall relate to the charges incurred on the network to which the user is attached.Charging information for applications using higher layer protocols which are not defined as teleservices, shall be basedon the bearer services specified.5.2Charging information at call set-up time (AOC-S)When the AOC-S supplementary service is activated, the network shall provide the user with information about thecharging rates at call establishment. In addition, the network shall inform the served user if a change in charging ratestakes place during the call.The network shall provide the charging information during call establishment or at the latest at call connection. Whenthere is a change in the charging rate during the call, the network shall send information about the new charging rate to theserved user.5.3Charging information during the call (AOC-D)When the AOC-D supplementary service is activated, the network shall provide the user with charging information for acall during the active phase of a call. The network shall provide the charging information and transfer it to the served userin an appropriate message. The supplied charging information shall be provided as a cumulative charge incurred so far forthe call (i.e. charges recorded from the start of the call and until the moment the charging information is sent to the serveduser).When the call is released, the network shall send the recorded charges for the call to the served user in one of the callcontrol messages clearing the call.If the network has determined that the call is free of charge, then the network shall send a free-of-charge indication in thefirst subsequent message sent to the served user. The network shall not send any further charging information during thecall. When the call is released, the network shall send the charged amount (zero) in a call control message clearing thecall.5.4Charging information at the end of the call (AOC-E)When the AOC-E supplementary service is activated, the network shall provide the served user with charging informationindicating the recorded charges for a call when the call is released. The network shall send the charging information to theserved user in one of the call control messages clearing the call.6Operational requirements6.1Provision and withdrawalThese supplementary services shall be provided separately by arrangement with the service provider or be generallyavailable. Withdrawal of the service shall be made at subscriber request or for administrative reasons.The following subscription options exist for each of the three AOC supplementary services, as defined in table 1.Table 1: Advice of charge subscription optionsSubscription optionsValueProvision of service1. For all calls; or2. On request on a per call basis.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)106.2Requirements on the originating network sideFor the purpose of the present document, the served user of the AOC supplementary service is connected to the originatingnetwork.The originating network shall make available the type of charging information that is indicated, related to a certain call.The originating network shall assemble the appropriate charging information, according to the service requirements, andsend it to the user.NOTE:The charging information may either be generated at the originating network, or generated elsewhere andsent to the originating network, in due time for the information to be provided to the user according to theprocedures of the present document.The network shall only include a charged item if the charged item contains information concerning the charges applied tothat call.The network shall only use those charged items which are appropriate to that network charging mechanism. Thus, in somenetworks, the network may, but need not, send some of these items, or combinations of items. Different networks couldgive information about the same call in different ways.If the served user suspends a call, then, as a network option, the originating network shall retain the charging informationfor the suspended call as long as the network retains the call identity of the suspended call of the served user.6.3Requirements on the destination network sideNone identified.7Coding requirements7.1GeneralThe charging information that the network shall convey to the served user may consist of a number of information units.The information to be transferred is specified in clause 5 of the stage 1 service descriptions ETS 300 178 [6],ETS 300 179 [7], and ETS 300 180 [8].7.2Coding of the Facility information element componentsTable 2 shows the definition of the operations and errors required for the AOC supplementary service using AbstractSyntax Notation one (ASN.1) as defined in CCITT Recommendation X.208 [9] and using the OPERATION and ERRORmacro as defined in CCITT Recommendation X.219 [10], figure 4/X.219.The formal definition of the component types to encode these operations and errors is provided in EN 300 196-1 [11],annex D, clause D.1.The inclusion of components in Facility information elements is defined in EN 300 196-1 [11], subclause 11.1.Table 2: Definition of operations and errors for the AOC supplementary servicesAdvice-of-Charge-Operations {ccitt identified-organization etsi (0) 182 operations-and-errors(1)}DEFINITIONS IMPLICIT TAGS ::=BEGINEXPORTSChargingRequest, AOCSCurrency, AOCSSpecialArr,AOCDCurrency, AOCDChargingUnit, AOCECurrency, AOCEChargingUnit,NoChargingInfoAvailable, ChargingAssociation;IMPORTSOPERATION, ERRORSIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)11FROM Remote-Operation-Notation{joint-iso-ccitt remote-operations (4) notation (0)}notSubscribed, notAvailable, notImplemented, invalidCallStateFROM General-Errors{ccitt identified-organization etsi (0) 196 general-errors (2)}PartyNumberFROM Addressing-Data-Elements{ccitt identified-organization etsi (0) 196 addressing-data-elements (6)};ChargingRequest ::= OPERATIONARGUMENT ChargingCaseRESULT CHOICE {AOCSCurrencyInfoList,AOCSSpecialArrInfo,chargingInfoFollows NULL}ERRORS {notSubscribed, notAvailable, notImplemented,invalidCallState, NoChargingInfoAvailable}AOCSCurrency ::= OPERATION-- AOC-S given in currency unitsARGUMENT CHOICE {chargeNotAvailable NULL,AOCSCurrencyInfoList }AOCSSpecialArr ::= OPERATION-- AOC-S for special charging arrangementARGUMENT CHOICE {chargeNotAvailable NULL,AOCSSpecialArrInfo }AOCDCurrency ::= OPERATION-- AOC-D given in currency unitsARGUMENT CHOICE {chargeNotAvailable NULL,AOCDCurrencyInfo }AOCDChargingUnit ::= OPERATION-- AOC-D given in charging unitsARGUMENT CHOICE {chargeNotAvailable NULL,AOCDChargingUnitInfo }AOCECurrency ::= OPERATION-- AOC-E given in currency unitsARGUMENT CHOICE {chargeNotAvailable NULL,AOCECurrencyInfo }AOCEChargingUnit ::= OPERATION-- AOC-E given in charging unitsARGUMENT CHOICE {chargeNotAvailable NULL,AOCEChargingUnitInfo }ChargingCase::=ENUMERATED {chargingInformationAtCallSetup (0),chargingDuringACall (1),chargingAtTheEndOfACall (2) }Table 2 (continued): Definition of operations and errors for the AOC supplementary servicesAOCSCurrencyInfoList::=SEQUENCE SIZE (1.10) OF AOCSCurrencyInfoAOCSCurrencyInfo::=SEQUENCE {chargedItem ChargedItem,CHOICE {specificCurrency CHOICE {durationCurrency[1] DurationCurrency,flatRateCurrency[2] FlatRateCurrency,volumeRateCurrency[3] VolumeRateCurrency},specialChargingCodeSpecialChargingCode,freeOfCharge[4] NULL,currencyInfoNotAvailable[5] NULL} }AOCSSpecialArrInfo::=INTEGER (1.10)ChargedItem::=ENUMERATED {basicCommunication (0),callAttempt (1),callSetup (2),userToUserInfo (3),operationOfSupplementaryServ (4) }SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)12DurationCurrency::=SEQUENCE {dCurrency[1]Currency,dAmount[2]Amount,dChargingType[3]ChargingType,dTime[4]Time,dGranularity[5]Time OPTIONAL }FlatRateCurrency::=SEQUENCE {fRCurrency[1]Currency,fRAmount[2]Amount }VolumeRateCurrency::=SEQUENCE {vRCurrency[1]Currency,vRAmount[2]Amount,vRVolumeUnit[3]VolumeUnit}SpecialChargingCode::=INTEGER (1.10)AOCDCurrencyInfo::=CHOICE {specificCurrency SEQUENCE {recordedCurrency[1] RecordedCurrency,typeOfChargingInfo[2] TypeOfChargingInfo,aOCDBillingId[3] AOCDBillingId OPTIONAL },freeOfCharge[1] NULL}AOCDChargingUnitInfo::=CHOICE {specificChargingUnits SEQUENCE {recordedUnitsList[1] RecordedUnitsList,typeOfChargingInfo[2] TypeOfChargingInfo,aOCDBillingId[3] AOCDBillingId OPTIONAL },freeOfCharge[1] NULL}RecordedCurrency::=SEQUENCE {rCurrency[1]Currency,rAmount[2]Amount }RecordedUnitsList::=SEQUENCE SIZE (1.32) OF RecordedUnitsTypeOfChargingInfo::=ENUMERATED {subTotal(0),total (1)}RecordedUnits::=SEQUENCE {CHOICE{recordedNumberOfUnitsNumberOfUnits,notAvailableNULL},recordedTypeOfUnitsTypeOfUnit OPTIONAL }AOCDBillingId::=ENUMERATED {normalCharging(0),reverseCharging(1),creditCardCharging (2)}SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)13Table 2 (continued): Definition of operations and errors for the AOC supplementary servicesAOCECurrencyInfo::=SEQUENCE {CHOICE {specificCurrency SEQUENCE {recordedCurrency[1] RecordedCurrency,aOCEBillingId[2] AOCEBillingId OPTIONAL},freeOfCharge[1] NULL},chargingAssociationChargingAssociation OPTIONAL}AOCEChargingUnitInfo ::=SEQUENCE {CHOICE {specificChargingUnits SEQUENCE {recordedUnitsList[1] RecordedUnitsList,aOCEBillingId[2] AOCEBillingId OPTIONAL},freeOfCharge[1] NULL},chargingAssociationChargingAssociation OPTIONAL}AOCEBillingId::=ENUMERATED {normalCharging(0),reverseCharging(1),creditCardCharging(2),callForwardingUnconditional(3),callForwardingBusy(4),callForwardingNoReply(5),callDeflection(6),callTransfer(7)}Currency::=IA5String (SIZE (1.10))Amount::=SEQUENCE {currencyAmount[1]CurrencyAmount,multiplier[2]Multiplier}CurrencyAmount::=INTEGER (0.16777215)Multiplier::=ENUMERATED {oneThousandth (0),oneHundredth (1),oneTenth (2),one(3),ten(4),hundred(5),thousand (6)}Time::=SEQUENCE {lengthOfTimeUnit[1]LengthOfTimeUnit,scale[2]Scale}LengthOfTimeUnit::=INTEGER (0.16777215)Scale::=ENUMERATED {oneHundredthSecond (0),oneTenthSecond(1),oneSecond(2),tenSeconds(3),oneMinute(4),oneHour(5),twentyFourHours(6)}VolumeUnit::=ENUMERATED {octet(0),segment(1),message(2) }TypeOfUnit::=INTEGER (1.16)-- Value 1-16NumberOfUnits::=INTEGER (0.16777215)ChargingType::=ENUMERATED {continuousCharging (0),stepFunction (1) }ChargingAssociation::=CHOICE {chargeNumber[0] EXPLICIT PartyNumber,chargeIdentifierChargeIdentifier}ChargeIdentifier::=INTEGER (-32768.32767)SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)14NoChargingInfoAvailable ::=ERRORTable 2 (concluded): Definition of operations and errors for the AOC supplementary serviceschargingRequest ChargingRequest::= 30aOCSCurrency AOCSCurrency::= 31aOCSSpecialArr AOCSSpecialArr::= 32aOCDCurrency AOCDCurrency::= 33aOCDChargingUnitAOCDChargingUnit::= 34aOCECurrency AOCECurrency::= 35aOCEChargingUnit AOCEChargingUnit::= 36noChargingInfoAvailable NoChargingInfoAvailable ::= 26END8State definitionsThe following states have been defined for the user:AOC Request: The user has sent an AOC request to the network and is waiting for a response (note).AOC Active: An AOC supplementary service has been activated by a user on a per call basis (note).The following states have been defined for the network:AOC Idle: An AOC supplementary service is not activated (note).AOC-S Activated: The AOC-S supplementary service has been activated either on a per call basis or for all calls.AOC-D Activated: The AOC-D supplementary service has been activated either on a per call basis or for all calls.AOC-E Activated: The AOC-E supplementary service has been activated either on a per call basis or for all calls.AOC-S Idle: The network has sent the AOC-S charging information to the served user. This is a "waiting" conditionwhere either a change in the charging rate, or the suspension of the basic call occurs, or the call is cleared.AOC-S Suspended: The AOC-S supplementary service is activated, and the served user has invoked the terminalportability supplementary service for this call.AOC-D Suspended: The AOC-D supplementary service is activated, and the served user has invoked the terminalportability supplementary service for this call.AOC-E Suspended: The AOC-E supplementary service is activated, and the served user has invoked the terminalportability supplementary service for this call.NOTE:These states exist for each instance of the AOC supplementary service.9Signalling procedures at the coincident S andT reference point9.1Activation, deactivation and registration9.1.1Normal operationThese supplementary services may be activated on a per call basis or they may be active for all calls. The activation on aper-call basis is only active for the lifetime of that call.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)15If an AOC supplementary service is subscribed to for all calls, no signalling procedure is defined for the activation of theservice. The network shall automatically activate the subscribed AOC supplementary service at each call setup.To activate an AOC supplementary service, the user shall include in the SETUP message a Facility information elementcontaining a ChargingRequest invoke component. The ChargingRequest invoke component shall indicate the AOCsupplementary service to be activated. Each AOC supplementary service is activated independently and one, two, or threeactivations can thus occur in the same SETUP message.If the network activates the requested AOC supplementary service (e.g. the served user is allowed to request theinformation), the network shall acknowledge the request by returning a ChargingRequest return result component within aFacility information element in a call control message (i.e. SETUP ACKNOWLEDGE, CALL PROCEEDING,PROGRESS, ALERTING, or CONNECT message - whichever is appropriate). Alternatively, the network can use aFACILITY message to convey the ChargingRequest return result component if a call control message is not availablewhen the information is to be sent.If a user has requested the AOC-S supplementary service and the activation request is accepted by the network, theprocedure of subclause 9.2.1.1 shall be followed.If a user has requested the AOC-D or AOC-E supplementary services and the activation request is accepted by thenetwork, the network shall send a ChargingRequest return result component to the user indicating "chargingInfoFollows".If the user receives a correctly encoded ChargingRequest return result component, the user shall accept the providedinformation and shall not respond to the network.No signalling procedure is defined for the registration of an AOC supplementary service.9.1.2Exceptional proceduresThe following exceptional procedures shall apply:a)if the AOC supplementary service is activated for all calls and the network cannot provide the charginginformation, the network shall, at the time it determines that the information is not available, send a Facilityinformation element including an AOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit,AOCECurrency or AOCEChargingUnit invoke component indicating "chargeNotAvailable" to the user andcontinue normal call handling;b)if the user receives a correctly encoded AOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit,AOCECurrency or AOCEChargingUnit invoke component, the user shall accept the provided information and shallnot respond to the network;c)if the AOC supplementary service is requested on a per-call basis and the network cannot provide the charginginformation, the network shall include the Facility information element containing a ChargingRequest return errorcomponent in a call control or FACILITY message and continue the basic call. The ChargingRequest return errorcomponent shall indicate either:1)one of the errors from the General-Errors list; or,2)"NoChargingInfoAvailable", whichever is appropriate.The "NoChargingInfoAvailable" value indicates that the served user would normally receive charging informationbut that in this case the information cannot be sent to the served user;d)if the network receives a request for any of the AOC supplementary services in any other message than a SETUPmessage, and item c) does not apply, then the network shall send a ChargingRequest return error componentindicating "invalidCallState" to the user;e)if a user receives a ChargingRequest return error component from the network, the user shall not take any furtherprotocol action. However, the user shall continue normal call handling;f)if a user or the network receives a reject component, no protocol actions shall be taken;g)if the user receives no response to the ChargingRequest invoke component and subsequently receives anAOCSCurrency, AOCSSpecialArr, AOCDCurrency, AOCDChargingUnit, AOCECurrency or AOCEChargingUnitinvoke component, the user shall ignore this component;SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)16h)if the user receives a ChargingRequest return error component or a reject component as a response to aChargingRequest invoke component and subsequently receives an AOCSCurrency, AOCSSpecialArr,AOCDCurrency, AOCDChargingUnit, AOCECurrency or AOCEChargingUnit invoke component, the user shallaccept the information provided and shall not respond to the network;i)if a user requests on a per call basis an AOC supplementary service which is activated for all calls, the networkshall acknowledge the request as specified in subclause 9.1.1. However, the network shall only send charginginformation as a result of one activation of each AOC supplementary service activated.9.2Invocation and operationIn the following subclauses the procedures for the transfer of charging information are given.The transfer of charging information may occur:-during the call establishment phase (AOC-S supplementary service);-in the Active state of a call (AOC-S and AOC-D supplementary services);-during the call clearing phase (AOC-S, AOC-D, and AOC-E supplementary services); or,-independent of a bearer at the user-network interface (AOC-E supplementary service).NOTE:The transfer of charging information in an invoke component is done according to the operation class 5.Operation class 5 implies that neither a return result component nor a return error component will bereceived as an answer to an invoke component. A consequence of using this operation class is that thesending of information in an invoke component is not a confirmed service.9.2.1Transfer of charging information in the call establishment phase9.2.1.1Normal operationFor the AOC-S supplementary service, the activation and invocation of the supplementary service is performedsimultaneously - i.e. the activation works as both an activation and an invocation of the supplementary service.For the AOC-S supplementary service, the network shall give charging information either in currency units or as a specialcharging arrangement.NOTE:The parameters described for the AOC-S supplementary service to express the duration rate provides asolution both for continuous charging as well as for charging with the step function method. It is up to thenetwork to specify the value of the parameters in a manner that it will fit with the continuous chargingmethod or with the step function method.If sending AOC-S supplementary service information to the served user, the network shall include charging rateinformation related only to the particular service(s) requested by the user at call setup.When the network sends charging information to the served user in the call establishment phase, the network shall includethe Facility information element in a call control message which is sent to the user (i.e. SETUP ACKNOWLEDGE, CALLPROCEEDING, PROGRESS, ALERTING, or CONNECT message - whichever is appropriate). Alternatively, thenetwork can use a FACILITY message to send charging information to the user, if a call control message is not availablewhen the information is to be sent.The Facility information element shall contain information about the charging rate applicable to that call. If the AOC-Ssupplementary service is activated on a per call basis, the Facility information element shall contain the chargingRequestreturn result component. If the AOC-S supplementary service is activated for all calls, the Facility information elementshall contain an AOCSCurrency invoke component or an AOCSSpeciallArr invoke component. This charging informationshall consist of one of the following types:-AOCSCurrencyInfoList; or,-AOCSSpecialArrInfo.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)17If the user receives a correctly encoded ChargingRequest return result component, the user shall accept the providedinformation and shall not respond to the network.If the user receives a correctly encoded AOCSCurrency or AOCSSpecialArr invoke component, the user shall accept theprovided information and shall not respond to the network.9.2.1.2Exceptional proceduresIn the case that charging information is not available in the network, the network shall inform the served user and the callshall be allowed to continue according to normal call handling procedures.If the AOC-S supplementary service has been activated on a per call basis and if charging information is not availablewithin the call establishment time, the network shall include a Facility information element within an appropriate messagesent to the user. The Facility information element shall contain the ChargingRequest return error component indicating"NoChargingInfoAvailable".If the user receives a correctly encoded ChargingRequest return error component, the user shall accept the reason for errorand shall not respond to the network.If the AOC-S supplementary service is activated for all calls and if charging information is not available within the callestablishment time, the network shall include a Facility information element within an appropriate message sent to theuser. The Facility information element shall contain the invoke component indicating "chargeNotAvailable".If the user receives a correctly encoded AOCSCurrency or AOCSSpecialArr invoke component, the user shall accept theprovided information and shall not respond to the network.If the network receives a reject component from the user, the network shall take no further protocol actions. Normal callhandling shall continue.9.2.2Transfer of charging information in the Active state9.2.2.1Normal operationIf the AOC-D supplementary service is offered, the originating network shall send charging information during a call. Therate of sending messages may vary from call to call and during a call.If the AOC-S supplementary service is offered and if there is a subsequent change in the charging rate, the network shallindicate to the user when the change in the charging rate has occurred (e.g. the user has invoked a supplementary serviceduring the Active state and this has an impact on the cost of the call, the changed charging rate information can only begiven at the time the supplementary service is invoked).When the network transfers charging information to the served user during the Active state, the network shall include theFacility information element in the FACILITY message sent to the user. The Facility information element shall contain oneof the following types of charging information in an invoke component:a)charging rate, if a change in the charging rates has occurred and the AOC-S supplementary service has beenactivated; or,b)cumulative charging information related to the AOC-D supplementary service. The network shall setTypeOfChargingInfo = "subTotal (0)".In case a), the network shall send one of the following types of charging information to the served user:-AOCSCurrencyInfoList in an AOCSCurrency invoke component; or,-AOCSSpecialArrInfo in an AOCSSpecialArr invoke component.For the AOC-S supplementary service, the network shall give charging information either in currency units or as a specialcharging arrangement.NOTE:The parameters described for the AOC-S supplementary service to express the duration rate provides asolution both for continuous charging as well as for charging with the step function method. It is up to thenetwork to specify the value of the parameters in a manner that it will fit with the continuous chargingmethod or with the step function method.SIST EN 300 182-1:2000
ETSIEN 300 182-1 V1.2.4 (1998-06)18In case b), the network shall send one of the following types of charging information to the served user:-AOCDCurrencyInfo in an AOCDCurrency invoke component; or,-AOCDChargingUnitInfo in an AOCDChargingUnit invoke component.If the AOC-D supplementary service is provided, the network shall give charging information, as a network option, eitherbased on currency units or on charging units. Only the charged items that affect
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