Information technology — Telecommunications and information exchange between systems — Private Integrated Services Network — Inter-exchange signalling protocol — Do Not Disturb and Do Not Disturb Override supplementary services

ISO/IEC 14844:2003 specifies the signalling protocol for the support of the Do Not Disturb and Do Not Disturb Override supplementary services (SS-DND and SS-DNDO) at the Q reference point between Private Integrated services Network eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN). SS-DND is a supplementary service which enables a served user to cause the PISN to reject any calls, or just those associated with a specified basic service, addressed to the served user's PISN number. The calling user is given an indication. Incoming calls are rejected as long as the service is active. The served user's outgoing service is unaffected. SS-DNDO is a supplementary service which enables a served user to override SS-DND at a called number; that is, to allow the call to proceed as if the called user had not activated SS-DND. The Q reference point is defined in ISO/IEC 11579-1. Service specifications are produced in three stages and according to the method specified in ETS 300 387. ISO/IEC 14844:2003 contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 14842. The signalling protocols for SS-DND(O) operate on top of the signalling protocol for basic circuit switched call control, as specified in ISO/IEC 11572, and use certain aspects of the generic procedures for the control of supplementary services specified in ISO/IEC 11582. ISO/IEC 14844:2003 also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between SS-DND and other supplementary services and ANFs and between SS-DNDO and other supplementary services and ANFs.

Technologies de l'information — Télécommunications et échange d'information entre systèmes — Réseau privé à intégration de services — Protocole de signalisation d'interéchange — Services supplémentaires ne pas déranger et dérogation à ne pas déranger

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Publication Date
20-Mar-2003
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9060 - Close of review
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04-Mar-2026
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INTERNATIONAL ISO/IEC
STANDARD 14844
Second edition
2003-04-01


Information technology —
Telecommunications and information
exchange between systems — Private
Integrated Services Network —
Inter-exchange signalling protocol —
Do Not Disturb and Do Not Disturb
Override supplementary services
Technologies de l'information — Télécommunications et échange
d'information entre systèmes — Réseau privé à intégration de
services — Protocole de signalisation d'interéchange — Services
supplémentaires ne pas déranger et dérogation à ne pas déranger


Reference number
ISO/IEC 14844:2003(E)
©
ISO/IEC 2003

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ISO/IEC 14844:2003(E)
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ii © ISO/IEC 2003 — All rights reserved

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ISO/IEC 14844:2003(E)
Contents
Foreword vi
Introduction vii
1 Scope 1
2 Conformance 1
3 Normative references 1
4 Terms and definitions                  2
4.1 External definitions 2
4.2 Other definitions 3
4.2.1 Activating PINX 3
4.2.2 Deactivating PINX 3
4.2.3 Inter-PINX link 3
4.2.4 Interrogating PINX 3
4.2.5 Path retention 3
4.2.6 Served User PINX 3
5 Acronyms 3
6 Signalling protocol for the support of SS-DND and SS-DNDO 3
SS-DND and SS-DNDO description
6.1 3
6.2 SS-DND and SS-DNDO operational requirements 4
6.2.1 Provision/withdrawal 4
6.2.2 Requirements on a Terminating PINX 4
6.2.3 Requirements on an Originating PINX 4
6.2.4 Requirements on an Activating PINX 4
6.2.5 Requirements on a Deactivating PINX 4
6.2.6 Requirements on an Interrogating PINX 4
Requirements on a SS-DND Served User PINX
6.2.7 5
6.2.8 Requirements on a Transit PINX 5
6.3 SS-DND and SS-DNDO coding requirements 6
6.3.1 Operations 6
6.3.2 Notifications 11
6.3.3 Information elements 11
6.3.4 Messages 11
6.4 SS-DND and SS-DNDO state definitions 11
6.4.1 State at the Terminating PINX 11
6.4.2 States at the Originating PINX 12
6.4.3 States at the Activating PINX 12
6.4.4 States at the Deactivating PINX 12
6.4.5 States at the Interrogating PINX 12
6.4.6 State at the SS-DND Served User PINX 12
6.5 SS-DND signalling procedures 12
6.5.1 Actions at the Terminating PINX 12
6.5.2 Actions at the Originating PINX 13
Actions at the Activating PINX
6.5.3 13
6.5.4 Actions at the Deactivating PINX 14
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ISO/IEC 14844:2003(E)
6.5.5 Actions at the Interrogating PINX 14
6.5.6 Actions at the Served User PINX 15
6.5.7 Actions at a Transit PINX 15
6.6 SS-DNDO signalling procedures 15
6.6.1 Actions at the Terminating PINX 15
6.6.2 Actions at the Originating PINX 16
6.6.3 Actions at a Transit PINX 17
6.7 Impact of interworking with public ISDNs 17
6.7.1 SS-DND 17
6.7.2 SS-DNDO 17
6.8 Impact of interworking with non-ISDNs 17
6.8.1 SS-DND 17
SS-DNDO
6.8.2 17
6.9 Protocol interactions between SS-DND and other supplementary services and ANFs 17
6.9.1 Interaction between SS-DND and Calling Name Identification Presentation (SS-CNIP) 18
6.9.2 Interaction between SS-DND and Connected Name Identification Presentation (SS-CONP) 18
6.9.3 Interaction between SS-DND and Call Completion to Busy Subscriber (SS-CCBS) 18
6.9.4 Interaction between SS-DND and Call Completion on No Reply (SS-CCNR) 18
6.9.5 Interaction between SS-DND and Call Transfer (SS-CT) 18
6.9.6 Interaction between SS-DND and Call Forwarding Unconditional (SS-CFU) 18
Interaction between SS-DND and Call Forwarding Busy (SS-CFB)
6.9.7 18
6.9.8 Interaction between SS-DND and Call Forwarding No Reply (SS-CFNR) 18
6.9.9 Interaction between SS-DND and Path Replacement (ANF-PR) 18
6.9.10 Interaction between SS-DND and Call Offer (SS-CO) 18
6.9.11 Interaction between SS-DND and Do Not Disturb Override (SS-DNDO) 18
6.9.12 Interaction between SS-DND and Call Intrusion (SS-CI) 18
6.10 Protocol interactions between SS-DNDO and other supplementary services and ANFs 18
6.10.1 Interaction between SS-DNDO and Calling Name Identification Presentation (SS-CNIP) 19
6.10.2 Interaction between SS-DNDO and Connected Name Identification Presentation (SS-CONP) 19
6.10.3 Interaction between SS-DNDO and Call Completion to Busy Subscriber (SS-CCBS) 19
6.10.4 Interaction between SS-DNDO and Call Completion on No Reply (SS-CCNR) 19
6.10.5 Interaction between SS-DNDO and Call Transfer (SS-CT) 19
6.10.6 Interaction between SS-DNDO and Call Forwarding Unconditional (SS-CFU) 19
6.10.7 Interaction between SS-DNDO and Call Forwarding Busy (SS-CFB) 19
6.10.8 Interaction between SS-DNDO and Call Forwarding No Reply (SS-CFNR) 20
6.10.9 Interaction between SS-DNDO and Path Replacement (ANF-PR) 20
6.10.10 Interaction between SS-DNDO and Call Offer (SS-CO) 20
Interaction between SS-DNDO and Do Not Disturb (SS-DND)
6.10.11 20
6.10.12 Interaction between SS-DNDO and Call Intrusion (SS-CI) 20
6.11 SS-DND and SS-DNDO parameter values (timers) 20
6.11.1 Timer T1 20
6.11.2 Timer T2 20
6.11.3 Timer T3 20
6.11.4 Timer T4 20
Annexes
A - Signalling protocol for the support of Path Retention 21
B - Protocol Implementation Conformance Statement (PICS) proforma 30
C - Examples of message sequences 41
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ISO/IEC 14844:2003(E)
D - Specification and Description Language (SDL) representation of procedures 46
E - Imported ASN.1 definitions relating to numbers 53
F - ASN.1 definitions according to ITU-T Recs. X.208 / X.209 54
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ISO/IEC 14844:2003(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the
specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the
development of International Standards through technical committees established by the respective organization to deal with
particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other
international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In
the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by
the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires
approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and
IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 14844 was prepared by ECMA (as ECMA-194) and was adopted, under a special “fast-track procedure”, by Joint
Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC.
This second edition cancels and replaces the first edition (ISO/IEC 14844:1996), which has been technically revised.
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ISO/IEC 14844:2003(E)
Introduction
This International Standard is one of a series of Standards defining services and signalling protocols applicable to Private
Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework
of International Standards for Open Systems Interconnection as defined by ISO/IEC.
This International Standard specifies the signalling protocol for use at the Q reference point in support of the Do Not Disturb
(DND) and Do Not Disturb Override (DNDO) supplementary services. The protocol defined in this International Standard
forms part of the PSS1 protocol (informally known as QSIG).
This International Standard is based upon the practical experience of ECMA member companies and the results of their active
and continuous participation in the work of ISO/IEC JTC 1, ITU-T, ETSI and other international and national standardization
bodies. It represents a pragmatic and widely based consensus.
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INTERNATIONAL STANDARD ISO/IEC 14844:2003(E)

Information technology — Telecommunications and information
exchange between systems — Private Integrated Services Network —
Inter-exchange signalling protocol — Do Not Disturb and Do Not Disturb
Override supplementary services
1Scope

This International Standard specifies the signalling protocol for the support of the Do Not Disturb and Do Not Disturb Override
supplementary services (SS-DND and SS-DNDO) at the Q reference point between Private Integrated services Network
eXchanges (PINXs) connected together within a Private Integrated Services Network (PISN).
SS-DND is a supplementary service which enables a served user to cause the PISN to reject any calls, or just those associated
with a specified basic service, addressed to the served user's PISN number. The calling user is given an indication. Incoming
calls are rejected as long as the service is active. The served user's outgoing service is unaffected.
SS-DNDO is a supplementary service which enables a served user to override SS-DND at a called number; that is, to allow the
call to proceed as if the called user had not activated SS-DND.
The Q reference point is defined in ISO/IEC 11579-1.
Service specifications are produced in three stages and according to the method specified in ETS 300 387. This International
Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and
stage 2 specifications in ISO/IEC 14842.
The signalling protocols for SS-DND(O) operate on top of the signalling protocol for basic circuit switched call control, as
specified in ISO/IEC 11572, and use certain aspects of the generic procedures for the control of supplementary services
specified in ISO/IEC 11582.
This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q
reference point between SS-DND and other supplementary services and ANFs and between SS-DNDO and other
supplementary services and ANFs.
NOTE - Additional interactions that have no impact on the signalling protocol at the Q reference point can be found in the relevant stage 1
specifications.
This International Standard is applicable to PINXs which can interconnect to form a PISN.
2 Conformance
In order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Protocol
Implementation Conformance Statement (PICS) proforma in annex B.
3 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the
edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)
applies.
ISO/IEC 11572:2000, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Circuit mode bearer services - Inter-exchange signalling procedures and protocol
ISO/IEC 11574:2000, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Circuit-mode 64 kbit/s bearer services - Service description, functional capabilities and
information flows
ISO/IEC 11579-1:1994, Information technology - Telecommunications and information exchange between systems - Private
integrated services network - Part 1: Reference configuration for PISN Exchanges (PINX)
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ISO/IEC 14844:2003(E)
ISO/IEC 11582:2002, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Generic functional protocol for the support of supplementary services - Inter-exchange
signalling procedures and protocol
ISO/IEC 13870:2003, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Inter-exchange signalling protocol - Call Completion supplementary services
ISO/IEC 13873:2003, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Inter-exchange signalling protocol - Call Diversion supplementary services
ISO/IEC 14842:1996, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Specification, functional model and information flows - Do not disturb and do not disturb
override supplementary services
ISO/IEC 14843:2003, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Inter-exchange signalling protocol - Call Offer supplementary service
ISO/IEC 14846:2003, Information technology - Telecommunications and information exchange between systems - Private
Integrated Services Network - Inter-exchange signalling protocol - Call Intrusion supplementary service
ETS 300 387:1994, Private Telecommunication Network (PTN); Method for the specification of basic and supplementary
services
ITU-T Rec. I.112:1993, Vocabulary of terms for ISDNs
ITU-T Rec. I.210:1993, Principles of telecommunication services supported by an ISDN and the means to describe them
ITU-T Rec. Q.950:2000, Supplementary services protocols, structure and general principles
ITU-T Rec. Z.100:1999, Specification and description language (SDL)
4 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4.1 External definitions
This International Standard uses the following terms defined in other documents:
− Application Protocol Data Unit (APDU) (ISO/IEC 11582)
− Basic Service (ITU-T Rec. I.210)
− Call, Basic Call (ISO/IEC 11582)
− Coordination Function (ISO/IEC 11582)
− End PINX (ISO/IEC 11582)
− Gateway PINX (ISO/IEC 11572)
− Interpretation APDU (ISO/IEC 11582)
− Network Facility Extension (NFE) (ISO/IEC 11582)
− Originating PINX (ISO/IEC 11582)
− Private Integrated Services Network (PISN) (ISO/IEC 11579-1)
− Private Integrated services Network eXchange (PINX) (ISO/IEC 11579-1)
− Rerouteing PINX (ISO/IEC 13873)
− Served user (ISO/IEC 14842)
− Signalling (ITU-T Rec. I.112)
− Supplementary Service (ITU-T Rec. I.210)
− Supplementary Services Control Entity (ISO/IEC 11582)
− Terminating PINX (ISO/IEC 11582)
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ISO/IEC 14844:2003(E)
− Transit PINX (ISO/IEC 11582)
− User (ISO/IEC 11574)
4.2 Other definitions
4.2.1 Activating PINX
The PINX serving the activating user.
4.2.2 Deactivating PINX
The PINX serving the deactivating user.
4.2.3 Inter-PINX link
The totality of a signalling channel and a number of information channels at the Q reference point.
4.2.4 Interrogating PINX
The PINX serving the interrogating user.
4.2.5 Path retention
The retaining of the network connection between the Originating PINX and the Terminating PINX so that a supplementary
service (such as SS-DNDO) can be invoked without establishing a new connection.
4.2.6 Served User PINX
The PINX serving the served user.
5 Acronyms
ANF Additional Network Feature
APDU Application Protocol Data Unit
ASN.1 Abstract Syntax Notation no. 1
DNDOCL DNDO Capability Level
DNDPL DND Protection Level
ISDN Integrated Services Digital Network
NFE Network Facility Extension
PICS Protocol Implementation Conformance Statement
PINX Private Integrated services Network eXchange
PISN Private Integrated Services Network
SDL Specification and Description Language
SS-DND Supplementary Service Do Not Disturb
SS-DNDO Supplementary Service Do Not Disturb Override
TE Terminal Equipment
6 Signalling protocol for the support of SS-DND and SS-DNDO
6.1 SS-DND and SS-DNDO description
SS-DND is a supplementary service which enables a served user to cause the PISN to reject any calls, or just those associated
with a specified basic service, addressed to the served user's PISN number. The calling user is given an appropriate indication.
Incoming calls are rejected as long as the service is active. The served user's outgoing service is unaffected.
SS-DNDO is a supplementary service which enables a calling user to override SS-DND at a called user, allowing the call to
proceed as if the called user had not activated SS-DND.
Both SS-DND and SS-DNDO are applicable to all circuit mode basic services defined in ISO/IEC 11574.
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ISO/IEC 14844:2003(E)
6.2 SS-DND and SS-DNDO operational requirements
6.2.1 Provision/withdrawal
6.2.1.1 Provision/withdrawal of SS-DND
SS-DND is provided or withdrawn after pre-arrangement with the service provider.
SS-DND is provided on a per PISN number basis and per basic service basis. For each PISN number, the supplementary
service can be subscribed to for every basic service subscribed to by that PISN number, or for only some of the basic services
subscribed to by that PISN number.
SS-DND subscription parameters may apply separately to each basic service to which SS-DND is subscribed, or for all the
basic services to which SS-DND is subscribed.
If SS-DNDO is implemented then the subscription parameter "DND protection level" (DNDPL) shall be provided. The
DNDPL has a value in the range 0 to 3 where 0 means no protection against DNDO and 3 means total protection against
DNDO. The values 0 and 3 shall be offered. The values 1 and 2 may, as an implementation option, be offered. The effect of the
subscription parameter DNDPL shall be as described in subclause 6.3.15 of ISO/IEC 14842.
The subscription parameter "Served user notification of SS-DND" may be provided. If it is not provided, as an implementation
option, the network may or may not notify the served user of DND invocation.
6.2.1.2 Provision/withdrawal of SS-DNDO
SS-DNDO is provided or withdrawn after pre-arrangement with the service provider.
SS-DNDO is provided on a per PISN number basis and per basic service basis. For each PISN number, the supplementary
service can be subscribed to for every basic service subscribed to by that PISN number, or for only some of the basic services
subscribed to by that PISN number.
SS-DNDO subscription parameters may apply separately to each basic service to which SS-DNDO is subscribed, or for all the
basic services to which SS-DNDO is subscribed.
The subscription parameter "DNDO capability level" (DNDOCL) shall be provided. The DNDOCL has a value in the range 1
(lowest capability) to 3 (highest capability). At least one of the DNDOCL levels shall be offered. The effect of the subscription
parameter DNDOCL shall be as described in subclause 6.3.15 of ISO/IEC 14842.
6.2.2 Requirements on a Terminating PINX
Call establishment procedures for the incoming side of an inter-PINX link and call release procedures, as specified in
ISO/IEC 11572, shall apply.
Generic procedures for the call-related control of supplementary services, as specified in ISO/IEC 11582 for an End PINX,
shall apply. In addition, the generic procedures for notification, as specified in ISO/IEC 11582 for an End PINX, shall apply.
6.2.3 Requirements on an Originating PINX
Call establishment procedures for the outgoing side of an inter-PINX link and call release procedures, as specified in
ISO/IEC 11572, shall apply.
Generic procedures for the call-related control of supplementary services, as specified in ISO/IEC 11582 for an End PINX,
shall apply. In addition, the generic procedures for notification, as specified in ISO/IEC 11582 for an End PINX, shall apply.
6.2.4 Requirements on an Activating PINX
Generic procedures for the call-independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating PINX, shall apply.
6.2.5 Requirements on a Deactivating PINX
Generic procedures for the call-independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating PINX, shall apply.
6.2.6 Requirements on an Interrogating PINX
Generic procedures for the call-independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for an Originating PINX, shall apply.
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ISO/IEC 14844:2003(E)
6.2.7 Requirements on a SS-DND Served User PINX
Generic procedures for the call-independent control (connection oriented) of supplementary services, as specified in
ISO/IEC 11582 for a Terminating PINX, shall apply.
6.2.8 Requirements on a Transit PINX
The basic call procedures for call establishment and call clearing at a Transit PINX, as specified in ISO/IEC 11572, shall apply.
Generic procedures for the call-related control and call-independent control (connection oriented) of supplementary services, as
specified in ISO/IEC 11582 for a Transit PINX, shall apply. In addition, the generic procedures for notification, as specified in
ISO/IEC 11582 for a Transit PINX, shall apply.
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ISO/IEC 14844:2003(E)
6.3 SS-DND and SS-DNDO coding requirements
6.3.1 Operations
The operations defined in Abstract Syntax Notation number 1 (ASN.1) in table 1 shall apply. The notation is in accordance
with ITU-T Rec. X.680 and X.690. The ITU-T Rec. X.208 and X.209 superseded version is in annex F.
Table 1 - Operations in support of SS-DND(O)
Do-Not-Disturb-Operations-asn1-97
{iso(1) standard(0) pss1-do-not-disturb(14844) do-not-disturb-operations-asn1-97 (2) }
DEFINITIONS EXPLICIT TAGS ::=
BEGIN
IMPORTS OPERATION, ERROR FROM Remote-Operations-Information-Objects
{joint-iso-itu-t(2) remote-operations(4) informationObjects(5) version1(0)}
EXTENSION, Extension{} FROM Manufacturer-specific-service-extension-class-asn1-97
{iso(1) standard(0)
pss1-generic-procedures(11582) msi-class-asn1-97(11)}
basicServiceNotProvided, invalidServedUserNr, notAvailable,
userNotSubscribed, supplementaryServiceInteractionNotAllowed
FROM General-Error-List
{ccitt recommendation q 950 general-error-list (1)}
PartyNumber FROM Addressing-Data-Elements-asn1-97
{iso(1) standard(0) pss1-generic-procedures(11582)
addressing-data-elements-asn1-97 (20)}
BasicService FROM Call-Diversion-Operations-asn1-97
{iso(1) standard(0) pss1-call-diversion(13873) call-diversion-operations-asn1-97 (1) }
;
Do-Not-Disturb-Operations OPERATION ::= {doNotDisturbActivateQ | doNotDisturbDeactivateQ |
doNotDisturbInterrogateQ | doNotDisturbOverrideQ | doNotDisturbOvrExecuteQ | pathRetain | serviceAvailable}
doNotDisturbActivateQ OPERATION ::= {
ARGUMENT DNDActivateArg
RESULT DNDActivateRes
ERRORS { userNotSubscribed |
notAvailable |
invalidServedUserNr |
basicServiceNotProvided |
temporarilyUnavailable |
supplementaryServiceInteractionNotAllowed |
unspecified}
CODE local: 35}
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ISO/IEC 14844:2003(E)
Table 1 - Operations in support of SS-DND(O) (continued)
doNotDisturbDeactivateQ OPERATION ::= {
ARGUMENT DNDDeactivateArg
RESULT DummyRes
ERRORS { userNotSubscribed |
notAvailable |
invalidServedUserNr |
notActivated |
temporarilyUnavailable |
supplementaryServiceInteractionNotAllowed |
unspecified}
CODE local: 36}
doNotDisturbInterrogateQ OPERATION ::= {
ARGUMENT DNDInterrogateArg
RESULT DNDInterrogateRes
ERRORS { userNotSubscribed |
notAvailable |
invalidServedUserNr |
temporarilyUnavailable |
supplementaryServiceInteractionNotAllowed |
unspecified}
CODE local: 37}
doNotDisturbOverrideQ OPERATION ::= {
ARGUMENT DNDOverrideArg
RETURN RESULT FALSE
ALWAYS RESPONDS FALSE
CODE local: 38}
pathRetain OPERATION ::= {
ARGUMENT PathRetainArg -- this operation may be used by other
-- Supplementary Services using other
-- values of the argument
RETURN RESULT FALSE
ALWAYS RESPONDS FALSE
CODE local: 41}
serviceAvailable OPERATION ::= {
ARGUMENT ServiceAvailableArg -- this operation may be used by other
-- Supplementary Services using other
-- values of the argument
RETURN RESULT FALSE
ALWAYS RESPONDS FALSE
CODE local: 42}
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ISO/IEC 14844:2003(E)
Table 1 - Operations in support of SS-DND(O) (continued)
doNotDisturbOvrExecuteQ OPERATION ::= {
ARGUMENT DummyArg
RESULT DummyRes
ERRORS {notAvailable |
temporarilyUnavailable |
supplementaryServiceInteractionNotAllowed |
unspecified}
CODE local: 39}
DummyArg ::= CHOICE {
null NULL,
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
}
DummyRes ::= CHOICE {
null NULL,
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
}
DNDActivateArg ::= SEQUENCE {
basicService BasicService,
servedUserNr PartyNumber,
argumentExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
DNDActivateRes ::= SEQUENCE {
status SET OF SEQUENCE{
basicService BasicService,
dndProtectionLevel DNDProtectionLevel OPTIONAL
} OPTIONAL,
resultExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
DNDDeactivateArg ::= SEQUENCE {
basicService BasicService,
servedUserNr PartyNumber,
argumentExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
8 © ISO/IEC 2003 – All rights reserved

---------------------- Page: 15 ----------------------
ISO/IEC 14844:2003(E)
Table 1 - Operations in support of SS-DND(O) (continued)
DNDInterrogateArg ::= SEQUENCE {
servedUserNr PartyNumber,
argumentExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
DNDInterrogateRes ::= SEQUENCE {
status SET OF SEQUENCE {
basicService BasicService,
dndProtectionLevel DNDProtectionLevel OPTIONAL
} OPTIONAL,
resultExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
DNDOverrideArg ::= SEQUENCE {
dndoCapabilityLevel DNDOCapabilityLevel,
argumentExtension CHOICE{
extension [1] IMPLICIT Extension{{DNDExtSet}},
sequenceOfExtn [2] IMPLICIT SEQUENCE OF Extension{{DNDExtSet}}
} OPTIONAL
}
PathRetainArg ::= CHOICE {
serviceList ServiceList,
extendedServiceList SEQUENCE {
serviceList ServiceList,
extension Extension{{DNDExtSet}}
}
}
ServiceAvailableArg ::= CHOICE {
serviceList ServiceList,
extendedServiceList SEQUENCE {
serviceList ServiceList,
extension Extension{{DNDExtSet}}
}
}
© ISO/IEC 2003 – All rights reserved 9

---------------------- Page: 16 ----------------------
ISO/IEC 14844:2003(E)
Table 1 - Operations in support of SS-DND(O) (concluded)
DNDProtectionLevel ::= ENUMERATED {
lowProtection(0),
mediumProtection(1),
highProtection(2),
fullProtection(3)
}
DNDOCapabilityLevel ::= ENUMERATED {
overrideLowProt(1),
overrideMediumProt(2),
overrideHighProt(3)
}
ServiceList ::= BIT STRING
{ dndo-low(1), dndo-medium(2), dndo-high(3) } (SIZE (1.32))
-- bits other than dndo-low, dndo-medium, or dndo-high, are reserved
-- for other Supplementary Services
temporarilyUnavailable ERROR ::= { CODE local: 1000}
notActivated ERROR ::= { CODE local: 43}
unspecified ERROR ::= {
PARAMETER Extension{{DNDExtSet}}
CODE local: 1008}
DNDExtSet EXTENSION ::= {…}
END -- of Do-Not-Disturb-Operations-asn1-97
10 © ISO/IEC 2003 – All rights reserved

---------------------- Page: 17 ----------------------
ISO/IEC 14844:2003(E)
6.3.2 Notifications
The notification defined in Abstract Syntax Notation number 1 (ASN.1) in table 2 shall apply.
Table 2 - Notification in support of SS-DND
Do-Not-Disturb-Notifications-asn1-97
{iso(1) standard(0) pss1-do-not-disturb(14844) do-not-disturb-notifications-asn1-97 (3) }
DEFINITIONS EXPLICIT TAGS ::=
BEGIN
IMPORTS NOTIFICATION FROM Notification-class-asn1-97
{ iso(1) standard(0)

...

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