ETSI EN 300 286-1 V1.2.4 (1998-06)

Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification

REN/SPS-05145-T-1

Digitalno omrežje z integriranimi storitvami (ISDN) - Dopolnilna storitev: meduporabniška signalizacija (UUS) - Protokol digitalne naročniške signalizacije št. 1 (DSS1) - 1. del: Specifikacija protokola

General Information

• Status: Published
• Publication Date: 28-Jun-1998
• Technical Committee: SPS 5 4 - Supplementary Services
• Current Stage: 12 - Completion
• Due Date: 03-Jul-1998
• Completion Date: 29-Jun-1998
• Ref Project: SIST EN 300 286-1 V1.2.4:2005 - Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol specification

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 286-1 V1.2.4:2005
01-april-2005
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Integrated Services Digital Network (ISDN); User-to-User Signalling (UUS)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification
Ta slovenski standard je istoveten z: EN 300 286-1 Version 1.2.4
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 286-1 V1.2.4:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 286-1 V1.2.4:2005

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SIST EN 300 286-1 V1.2.4:2005
EN 300 286-1 V1.2.4 (1998-06)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
User-to-User Signalling (UUS) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification

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SIST EN 300 286-1 V1.2.4:2005
2 EN 300 286-1 V1.2.4 (1998-06)
Reference
REN/SPS-05145-T-1 (2nc90iqo.PDF)
Keywords
ISDN, UUS, DSS1, supplementary service
ETSI
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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

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SIST EN 300 286-1 V1.2.4:2005
3 EN 300 286-1 V1.2.4 (1998-06)
Contents
Intellectual Property Rights. 5
Foreword. 5
1 Scope . 7
2 Normative references. 7
3 Definitions. 8
4 Abbreviations.9
5 Description . 10
5.1 Service 1.10
5.2 Service 2.10
5.3 Service 3.11
6 Operational requirements . 11
6.1 Provision and withdrawal.11
6.2 Requirements on the originating network side.11
6.3 Requirements on the destination network side .11
7 Coding requirements. 11
7.1 Coding of the Facility information element component .11
7.2 Definition of messages.12
7.2.1 CONGESTION CONTROL .12
7.2.2 USER INFORMATION.13
7.3 Definition of information elements.13
7.3.1 Congestion level.13
7.3.2 More data .13
7.3.3 User-user.14
8 State definitions. 15
9 Signalling procedures at the coincident S and T reference point . 16
9.1 Service 1.16
9.1.1 Activation, deactivation and registration.16
9.1.1.1 Service 1 - implicitly requested .16
9.1.1.1.1 Normal operation.16
9.1.1.1.2 Exceptional procedures.17
9.1.1.2 Service 1 - explicitly requested.17
9.1.1.2.1 Normal operation.17
9.1.1.2.2 Exceptional procedures.18
9.1.2 Invocation.19
9.1.2.1 Service 1 invocation during call establishment .19
9.1.2.1.1 Normal operation.19
9.1.2.1.2 Exceptional procedures.19
9.1.2.2 Service 1 invocation during call clearing.20
9.1.2.2.1 Normal operation.20
9.1.2.2.2 Exceptional procedures.21
9.2 Service 2.21
9.2.1 Activation, deactivation and registration.21
9.2.1.1 Normal operation.21
9.2.1.2 Exceptional procedures .21
9.2.2 Invocation.23
9.2.2.1 Normal operation.23
9.2.2.2 Exceptional procedures .24
9.3 Service 3.25
9.3.1 Activation, deactivation and registration.25
9.3.1.1 Service 3 request during call establishment.25
9.3.1.1.1 Normal operation.25
ETSI

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SIST EN 300 286-1 V1.2.4:2005
4 EN 300 286-1 V1.2.4 (1998-06)
9.3.1.1.2 Exceptional procedures.25
9.3.1.2 Service 3 request during the Active (N10, U10) call state .27
9.3.1.2.1 Normal operation.27
9.3.1.2.2 Exceptional procedures.27
9.3.2 Invocation.28
9.3.2.1 Normal operation.28
9.3.2.2 Exceptional procedures .28
9.3.3 Flow control.29
9.3.3.1 Normal operation.29
9.3.3.2 Exceptional procedures .29
10 Procedures for interworking with private ISDNs . 29
11 Interaction with other networks . 30
11.1 Interworking with an ISDN network supporting only a maximum User-user information element length of
35 octets.30
11.2 Interaction with non-ISDN .30
12 Interaction with other supplementary services. 30
13 Parameter values (timers). 30
14 Dynamic description (SDL diagrams). 30
14.1 Service 1.32
14.1.1 User.32
14.1.2 Network.36
14.2 Service 2.42
14.2.1 User.42
14.2.2 Network.45
14.3 Service 3.51
14.3.1 User.51
14.3.2 Network.56
Annex A (informative): Signalling flows . 63
A.1 Service 1, implicit request, point-to-multipoint. 64
A.2 Service 1, implicit request, point-to-point . 67
A.3 Service 1, explicit request, point-to-multipoint. 69
A.4 Service 1, explicit request, point-to-point . 73
A.5 Service 2 . 75
A.6 Service 3, request during call establishment, point-to-multipoint . 77
A.7 Service 3, request during the Active (N10, U10) call state. 78
A.8 Service 3, flow control. 79
Annex B (informative): Diagrammatic description of coding requirements . 80
B.1 UUS request invoke component (typical example) . 80
B.2 UUS return result component (typical example) . 81
B.3 UUS return error component (typical example) . 81
Annex C (informative): Changes with respect to the previous ETS 300 286-1 . 82
Annex D (informative): Bibliography. 83
History. 84
ETSI

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SIST EN 300 286-1 V1.2.4:2005
5 EN 300 286-1 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) User-to-User Signalling (UUS) 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 telecommunication services as provided by European public telecommunications operators under the pan-
European 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 UUS supplementary service. The stage 1 and stage 2 aspects are detailed in ETS 300 284 and ETR 285, respectively.
The present version updates the references to the basic call specifications.
ETSI

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SIST EN 300 286-1 V1.2.4:2005
6 EN 300 286-1 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

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SIST EN 300 286-1 V1.2.4:2005
7 EN 300 286-1 V1.2.4 (1998-06)
1 Scope
This first part of EN 300 286 specifies the stage three of the User-to-User Signalling (UUS) 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 ITU-T Recommendation I.411 [4]) by means
of the Digital Subscriber Signalling System No. one (DSS1) protocol. Stage three identifies the protocol procedures and
switching functions needed to support a telecommunication 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 telecommunication network that is not an ISDN.
The UUS supplementary service enables a user to send/receive a limited amount of information to/from another user over
the signalling channel in association with a call to the other user.
The UUS supplementary service is applicable to all circuit-switched telecommunication services.
Further parts of EN 300 286 specify the method of testing required to identify conformance to the present document.
The present document is applicable to equipment supporting the UUS supplementary service to be attached at either side
of a T reference point or coincident S and T reference points 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] ITU-T Recommendation I.112: "Vocabulary of terms for ISDNs".
[2] CCITT Recommendation I.130 (1988): "Method for the characterisation of telecommunication
services supported by an ISDN and network capabilities of an ISDN".
[3] ITU-T Recommendation I.210: "Principles of telecommunication services supported by an ISDN
and the means to describe them".
[4] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
[5] CCITT Recommendation X.25 (1988): "Interface between Data Terminal Equipment (DTE) and
Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected
to public data networks by dedicated circuit".
[6] CCITT Recommendation X.208 (1988): "Specification of Abstract Syntax Notation One (ASN.1)".
[7] CCITT Recommendation X.219 (1988): "Remote Operations: Model, Notation and Service
definitions".
[8] CCITT Recommendation X.244 (1988): "Procedure for exchange of protocol identification during
virtual call establishment on packet switched public data networks".
ETSI

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[9] CCITT Recommendation Z.100 (1988): "Specification and description language (SDL)".
[10] 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]".
[11] EN 300 403-2: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System
No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control; Part 2:
Specification and Description Language (SDL) diagrams".
[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] 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".
3 Definitions
For the purposes of the present document, the following definitions apply:
call control message: A message as defined in EN 300 403-1 [10], subclause 3.1, which on sending or receipt causes a
change of the call state at either the network or the user. Call control messages also include the PROGRESS message but
not the INFORMATION message.
NOTE: For the purposes of other standards, the information message may be considered as a call control message.
called network: The network to which the called user is attached.
called user: A user that receives a call request which may include a request of the UUS supplementary service.
calling network: The network to which the calling user is attached.
calling user: A user that initiates a call and may include a request of the UUS supplementary service in the call request.
contention: Contention exists when the called user has a point-to-multipoint arrangement and multiple responses to an
incoming call are sent to the network. These responses may carry different information related to the UUS supplementary
service.
explicit request: An explicit request of a UUS supplementary service is one where the request is explicitly identified by
including a Facility information element with an appropriate component in either the SETUP or FACILITY message sent
by the served user. The explicit request requires an explicit response (acceptance or rejection).
explicit service 1: Service 1 explicitly requested.
implicit request: An implicit request of a UUS supplementary service is one where the request is implicitly identified by
including a User-user information element in the SETUP message sent by the served user.
implicit service 1: Service 1 implicitly requested.
Integrated Services Digital Network (ISDN): See ITU-T Recommendation I.112 [1], definition 308.
invoke component: See EN 300 196-1 [13], subclause 8.2.2.1. Where reference is made to an "xxxx" invoke component,
an invoke component is meant with its operation value set to the value of the operation "xxxx".
network: The DSS1 protocol entity at the network side of the user-network interface.
point-to-multipoint arrangement: In the context of the present document, a point-to-multipoint arrangement exists at the
called user's interface, if the network has the knowledge that the point-to-multipoint layer 3 procedures shall be applied at
the called user's interface. Consequently, responses from more than one terminal are accepted in case of an incoming call.
point-to-point arrangement: In the context of this standard, a point-to-point arrangement exists at the called user's
interface, if the network has the knowledge that the point-to-point layer 3 procedures shall be applied at the called user's
interface. Consequently, a response from only one user is accepted in case of an incoming call.
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preferred request: A preferred request of a UUS supplementary service is one where the call setup shall continue even if
the request for the UUS supplementary service cannot be accepted.
premature clearing: The calling or called user initiates call clearing before the call has reached the Active (N10, U10)
call state.
receiving network: The network to which the receiving user is attached.
receiving user: The user receiving USER INFORMATION messages as part of service 2 or 3.
reject component: See EN 300 196-1 [13], subclause 8.2.2.4.
remote network: The network to which the remote user is attached.
remote user: The user who receives a request for service 3 in the Active (U10) call state.
required request: A required request of a UUS supplementary service is one where the call setup shall be rejected if the
request for the UUS supplementary service cannot be accepted.
requesting network: The network to which the requesting user is attached.
requesting user: The user who sends a request for the UUS supplementary service 3 in the Active (U10) call state.
return error component: See EN 300 196-1 [13], subclause 8.2.2.3. Where reference is made to an "xxxx" return error
component, a return error component is meant which is related to an "xxxx" invoke component".
return result component: See EN 300 196-1 [13], subclause 8.2.2.2. Where reference is made to an "xxxx" return result
component, a return result component is meant which is related to an "xxxx" invoke component".
sending network: The network to which the sending user is attached.
sending user: The user sending USER INFORMATION messages as part of service 2 or 3.
served user: The user who is the requester of the UUS supplementary service. For service 1 and service 2, the served
user is always at the originating side. For service 3, the served user may be at the originating or the destination side.
service; telecommunication service: See ITU-T Recommendation I.112 [1], definition 201.
service 1: A form of the UUS supplementary service where UUI can be sent and received as part of call control messages
for originating and terminating calls.
service 2: A form of the UUS supplementary service where UUI can be sent and received independently of call control
messages in the alerting phase of a call.
service 3: A form of the UUS supplementary service where UUI can be sent and received independently of call control
messages once the connection has been established.
supplementary service: See ITU-T Recommendation I.210 [3], subclause 2.4.
user: The DSS1 protocol
...