SIST-V ETSI/EG 201 189 V1.4.1:2003

• Abstract:

  Updates existing document with: Security Tools, Remote Control, Line Hunting, Trunk Hunting supplementary service coding information.

• Status: Published
• Publication Date: 31-Oct-2003
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-2003
• Due Date: 01-Nov-2003
• Completion Date: 01-Nov-2003
• Ref Project: ETSI EG 201 189 V1.4.1 (2000-09) - Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Master list of codepoints and operation values

SIST-V ETSI/EG 201 189 V1.4.1:2003 is the Slovenian version of ETSI EG 201 189 V1.4.1. It is an ETSI Guide for the Integrated Services Digital Network (ISDN) Digital Subscriber Signalling System No. one (DSS1) protocol that lists message codepoints, information element codepoints, protocol discriminator values, notifications, progress indicators, state values, operations, and errors. Engineers, network operators, and test teams use it as a reference for mapping DSS1 signalling values to the ETSI specifications that define them.

What does SIST-V ETSI/EG 201 189 V1.4.1:2003 specify?

SIST-V ETSI/EG 201 189 V1.4.1:2003 provides an overview of DSS1 codepoints used on the pan-European ISDN user-network interface at the T reference point or coincident S and T reference point. It brings together values used for basic call, packet mode call, and supplementary services, and it marks values that are not applicable in networks conforming to ETSI specifications.

The document is organized as a reference list rather than a procedural standard. Clauses 4 to 11 cover the codepoints and values, and clause 12 shows how messages relate to the information elements they may carry.

Clause	What it covers
1	Scope
2	References
3	Definitions and abbreviations
4	DSS1 message codepoints
5	DSS1 information element codepoints in codeset 0, 4, and 5
6	Protocol discriminator values
7	Notifications
8	Progress indicator values
9	State values
10	Operations
11	Errors
12	Contents of messages

The foreword also states that an ETSI Guide is informative. In practice, that means the document is used to interpret and align signalling values, not to describe a conformance test by itself.

What are the key requirements of SIST-V ETSI/EG 201 189 V1.4.1:2003?

SIST-V ETSI/EG 201 189 V1.4.1:2003 is mainly a master list of identifiers. The practical value of the document is that it shows which DSS1 values are assigned, which are reserved, and which ETSI specification defines each one.

DSS1 message and information element codepoints

Clause 4 lists the DSS1 message codepoints, grouped into call establishment, call information phase, call clearing, and miscellaneous messages. This matters because equipment has to encode and decode messages consistently across call setup, hold, release, registration, and status-related procedures.

Clause 5 lists DSS1 information element codepoints for codeset 0, codeset 4, and codeset 5. It covers single-octet and variable-length information elements such as Bearer capability, Cause, Channel identification, Facility, Progress indicator, Notification indicator, Display, Date/time, Keypad facility, Connected number, Called party number, User-user, and Transit counter. For implementers, this is the map used to build and parse message contents.

Several values are marked as reserved, obsolete, or not applicable in ETSI networks. In practice, that tells vendors which values to avoid using in ETSI-conforming signalling and which values are kept only for backward compatibility.

Protocol, notification, progress, and state values

Clause 6 gives protocol discriminator values for user-to-user signalling, Q.931 user-network call control messages, Q.2931 user-network call control messages, V5 protocol, VB5.1 protocol, and reserved ranges. This helps a stack choose the correct layer 3 protocol from the first octet of a message.

Clause 7 lists notification indicator values, including user suspended, user resumed, call completion delay, conference events, call waiting, diversion activated, call transferred, reverse charging, and remote hold or remote retrieval. It also defines notification indicators by global value using an ECMA object identifier for private ISDN use. That is relevant when a network carries private-service signalling transparently.

Clause 8 defines progress indicator values for interworking and call-progress information. Clause 9 defines call state values for user and network states, plus global interface state values such as REST 0, REST 1, and REST 2. These clauses are used to interpret call progress, signaling state, and restart behavior during troubleshooting and implementation.

Operations and errors for supplementary services

Clause 10 lists operations by local value and by global value. The local-value table includes operations for services such as UUS, CUG, MCID, 3PTY, diversion, explicit reservation, charging, CONF, CCBS, ECT, MWI, OCB, Security tools (SET), CCNR, mobility management on alpha interface, Line Hunting (LH), and CFNRc. This is the main section for service-control signalling, because it maps each operation name to the service family that uses it.

Clause 10.2 also groups operations by ETSI object identifier for services such as SCF supplementary services, FPH supplementary service, CCBS, ECT, MWI, OCB, Security tools (SET) procedures, CCNR, mobility management, LH, and CFNRc. In practice, this is how a private or service-specific ASN.1 object identifier is tied to the corresponding operation names.

Clause 11 does the same for errors. The local-value table includes general DSS1 errors and service-specific errors for CUG, diversion, conference, reservation, CCBS, SET PIN and TAN procedures, MWI, mobility management, and LH. The global-value table maps service-family object identifiers to errors such as invalid screening lists, invalid CCBS reference, invalid PIN, invalid TAN, network rejected, paging failure, and withdrawal-related errors. For implementers and test teams, this section is the shared vocabulary for negative responses and exception handling.

Message-content matrices

Clause 12 and tables 14 to 17 show which information elements may appear in each message group. The matrices cover call establishment, call information phase, call clearing, and miscellaneous messages. They are useful when checking whether a message format is plausible, but they are presented as an overview of possible contents rather than as a full rule set for a specific service or purpose.

The note in clause 12 is important in practice: Shift may be used to move to another codeset for interpreting Segmented message, but the document says that this is not recommended unless there is bilateral agreement between user and network.

What terms does SIST-V ETSI/EG 201 189 V1.4.1:2003 define?

• ISDN - Integrated Services Digital Network, the network family covered by the guide.
• DSS1 - Digital Subscriber Signalling System No. one, the signalling protocol whose codepoints the guide lists.
• ASN.1 - Abstract Syntax Notation one, the notation used for some global operation and notification identifiers.
• BER - Basic Encoding Rules, the encoding used for the notification extension referred to in clause 7.
• SET - Security Tools, the supplementary service procedures that include PIN and TAN operations and errors.
• LH - Line Hunting, the supplementary service family that appears in the operation and error tables.
• CCBS - Completion of Calls to Busy Subscriber, one of the supplementary services with its own operations and errors.
• UUS - User-to-User Signalling, a supplementary service that has its own operation value and related codepoints.

Who uses SIST-V ETSI/EG 201 189 V1.4.1:2003?

SIST-V ETSI/EG 201 189 V1.4.1:2003 is used by ISDN protocol implementers, switch and terminal vendors, and network operators who need to align DSS1 signalling values with ETSI-defined services. It is also used by test laboratories, integration teams, and quality managers when checking message encoding, service interactions, and error handling.

The guide is especially relevant for work at the T reference point or coincident S and T reference point. That makes it useful for public telecommunications operators, equipment suppliers, and anyone maintaining supplementary services or basic call control on an ISDN network.

What changed in SIST-V ETSI/EG 201 189 V1.4.1:2003 from the previous edition?

This edition updates the existing codepoint list with supplementary service coding information for Security Tools, Remote Control, Line Hunting, and Trunk Hunting. The history section also records earlier publications of the same guide under ETR 189 and later versioned publications up to V1.4.1.

Which standards are used with SIST-V ETSI/EG 201 189 V1.4.1:2003?

The guide relies on several references to define terms and to identify where each codepoint is specified. The most important ones are:

• ITU-T I.112 - defines ISDN terminology used in the document.
• ITU-T I.210 - defines supplementary service terminology.
• ITU-T I.411 - defines the user-network reference configurations mentioned in the scope.
• ITU-T Q.931 - defines ISDN user-network layer 3 call control for circuit mode.
• ITU-T Q.2931 - defines B-ISDN basic call and connection control.
• ETSI ETS 300 007 and ETSI EN 300 403-1 - define the core DSS1 basic call control and many shared message and information element values.
• ETSI EN 300 196-1 - provides generic supplementary service support and several shared values used in tables 4, 5, 10, and 11.
• ETSI EN 300 286-1 - provides UUS-related codepoints.
• ETSI EN 300 207-1 - provides diversion and SCF-related operations, errors, and indicators.
• ETSI EN 300 359-1, EN 300 369-1, EN 300 745-1, EN 301 001-1, EN 301 002-1, EN 301 065-1, EN 301 144-1, EN 301 484-1, and EN 302 094-1 - provide the supplementary service and mobility values referenced in the operation and error tables.
• ETSI EN 300 324-1, EN 300 347-1, and EN 301 005-1 - provide the V5 and VB5.1 protocol values used for protocol discriminators.

What does the SIST-V ETSI/EG 201 189 V1.4.1:2003 document contain?

The document contains tables that map DSS1 values to named messages, information elements, protocol discriminators, notifications, progress indicators, states, operations, and errors. It also includes tables for operations and errors defined by ETSI object identifier, which are useful when a supplementary service is identified by an ASN.1 object structure rather than by a simple local code.

Clause 12 adds message-content matrices for call establishment, call information phase, call clearing, and miscellaneous messages. These matrices support implementation, testing, and interoperability checks by showing which information elements may appear together in each message group.

The document also includes a history section that records the publication trail of the guide.

SLOVENSKI STANDARD
01-november-2003
'LJLWDOQRRPUHåMH]LQWHJULUDQLPLVWRULWYDPL,6'13URWRNROGLJLWDOQHQDURþQLãNH
VLJQDOL]DFLMHãW'66*ODYQLVH]QDPNRGLUQLKWRþNLQREUDWRYDOQLKYUHGQRVWL
Integrated Services Digital Network (ISDN) - Digital Subscriber Signalling System No.
one (DSS1) protocol - Master list of codepoints and operation values
Ta slovenski standard je istoveten z: EG 201 189 Version 1.4.1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

ETSI Guide
Integrated Services Digital Network (ISDN);
Digital Subscriber Signalling System No. one (DSS1) protocol;
Master list of codepoints and operation values

2 ETSI EG 201 189 V1.4.1 (2000-09)
Reference
REG/SPAN-05205
Keywords
ISDN, DSS1, coding, ASN.1
ETSI
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ETSI
3 ETSI EG 201 189 V1.4.1 (2000-09)
Contents
Intellectual Property Rights.4
Foreword.4
1 Scope .5
2 References .5
3 Definitions and abbreviations.8
3.1 Definitions.8
3.2 Abbreviations .8
4 DSS1 message codepoints.9
5 DSS1 information element codepoints.11
5.1 Codeset 0.11
5.2 Codeset 4.12
5.3 Codeset 5.13
6 Protocol discriminator values.14
7 Notifications.15
7.1 Notification indicator values .15
7.2 Notification indicators defined by global value.16
8 Progress indicator values.16
9 State values.17
10 Operations .18
10.1 Operations defined by local value .18
10.2 Operations defined by global value.20
11 Errors.23
11.1 Errors defined by local value.23
11.2 Errors defined by global value .25
12 Contents of messages .27
History .31
ETSI
4 ETSI EG 201 189 V1.4.1 (2000-09)
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 ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (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 ETSI 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 ETSI Guide (EG) has been produced by ETSI Technical Committee Services and Protocols for Advanced
Networks (SPAN).
An ETSI Guide (EG) is an ETSI deliverable, containing informative elements, adopted for publication by the ETSI
membership.
ETSI
5 ETSI EG 201 189 V1.4.1 (2000-09)
1 Scope
The present document provides an overview of the codepoints used by the Digital Subscriber Signalling System No.
one (DSS1) protocol 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 [3]).
This overview is related to messages, information elements, protocol discriminator values, notification indicator values,
progress indicator values, state values, operation and error values which are used for basic call, packet mode call, and
supplementary services specified so far by ETSI. In addition, the operations and errors identified by an ETSI object
identifier are included in a separate table.
All codepoints currently specified either by ETSI or ITU-T are shown in the following tables. When a codepoint is
specified for use in networks conforming to an ETSI specification, a reference is included in the table to indicate the
ETSI specification where the particular codepoint is defined.
Other codepoint values are indicated by the note: "Not applicable in networks conforming to ETSI specifications". This
note applies to values, which are used in ITU-T Recommendations, but are not currently specified for use by ETSI in
any ETSI specification.
NOTE: A future version of the present document is expected to contain the operations and errors for the Remote
Control service and possibly the Trunk Hunting supplementary service.
Clause 12 of the present document shows the relationship between messages and the information elements that each
message may carry. Tables 14 to 17 only provide an overview of possible message contents but do not indicate which
information element or combinations of information elements are present in a particular message for a specific purpose
(e.g. basic call, a certain supplementary service).
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, 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 (1993): "Vocabulary of terms for ISDNs".
[2] ITU-T Recommendation I.210 (1993): "Principles of telecommunication services supported by an
ISDN and the means to describe them".
[3] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
[4] ITU-T Recommendation X.25 (1993): "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".
[5] ETSI ETS 300 007 (1991): "Integrated Services Digital Network (ISDN); Support of packet-mode
terminal equipment by an ISDN".
[6] ETSI EN 300 058-1 (V1.2): "Integrated Services Digital Network (ISDN); Call Waiting (CW)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
ETSI
6 ETSI EG 201 189 V1.4.1 (2000-09)
[7] ETSI EN 300 097-1 (V1.2): "Integrated Services Digital Network (ISDN); Connected Line
Identification Presentation (COLP) supplementary service; Digital Subscriber Signalling System
No. one (DSS1) protocol; Part 1: Protocol specification".
[8] ETSI EN 300 130-1 (V1.2): "Integrated Services Digital Network (ISDN); Malicious Call
Identification (MCID) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[9] ETSI EN 300 138-1 (V1.3): "Integrated Services Digital Network (ISDN); Closed User Group
(CUG) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[10] ETSI EN 300 141-1 (V1.2): "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[11] ETSI EN 300 182-1 (V1.3): "Integrated Services Digital Network (ISDN); Advice of Charge
(AOC) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[12] ETSI EN 300 185-1 (V1.2): "Integrated Services Digital Network (ISDN); Conference call, add-on
(CONF) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[13] ETSI EN 300 188-1 (V1.2): "Integrated Services Digital Network (ISDN); Three-Party (3PTY)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[14] ETSI EN 300 195-1 (V1.4): "Integrated Services Digital Network (ISDN); Supplementary service
interactions; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification".
[15] ETSI EN 300 196-1 (V1.2): "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".
[16] ETSI EN 300 207-1 (V2.0): "Integrated Services Digital Network (ISDN); Diversion
supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[17] ETSI EN 300 210-1 (V1.2): "Integrated Services Digital Network (ISDN); Freephone (FPH)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[18] ETSI EN 300 286-1 (V1.2): "Integrated Services Digital Network (ISDN); User-to-User Signalling
(UUS) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[19] ETSI EN 300 324-1 (V2.1): "V interfaces at the digital Local Exchange (LE); V5.1 interface for
the support of Access Network (AN); Part 1: V5.1 interface specification".
[20] ETSI EN 300 347-1 (V2.2): "V interfaces at the digital Local Exchange (LE); V5.2 interface for
the support of Access Network (AN); Part 1: V5.2 interface specification".
[21] ETSI EN 300 359-1 (V1.2): "Integrated Services Digital Network (ISDN); Completion of Calls to
Busy Subscriber (CCBS) supplementary service; Digital Subscriber Signalling System No. one
(DSS1) protocol; Part 1: Protocol specification".
[22] ETSI EN 300 362 (V1.2): "Private Integrated Services Network (PISN); Inter-exchange signalling
protocol; Call offer supplementary service [ISO/IEC 14843 (1996), modified]".
[23] ETSI EN 300 364 (V1.2): "Private Integrated Services Network (PISN); Inter-exchange signalling
protocol; Do not disturb and do not disturb override supplementary services [ISO/IEC 14844
(1996), modified]".
ETSI
7 ETSI EG 201 189 V1.4.1 (2000-09)
[24] ETSI EN 300 369-1 (V1.2): "Integrated Services Digital Network (ISDN); Explicit Call Transfer
(ECT) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[25] ETSI EN 300 403-1 (V1.3): "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]".
[26] ETSI EN 300 426 (V1.2): "Private Integrated Services Network (PISN); Inter-exchange signalling
protocol; Call intrusion supplementary service [ISO/IEC 14846 (1996), modified]".
[27] ETSI EN 300 443-1 (V1.3): "Broadband Integrated Services Digital Network (B-ISDN); Digital
Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3
specification for basic call/bearer control; Part 1: Protocol specification
[ITU-T Recommendation Q.2931 (1995), modified]".
[28] ETSI EN 300 745-1 (V1.2): "Integrated Services Digital Network (ISDN); Message Waiting
Indication (MWI) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[29] ETSI EN 301 001-1 (V1.2): "Integrated Services Digital Network (ISDN); Outgoing Call Barring
(OCB) supplementary services; Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 1: Protocol specification".
[30] ETSI EN 301 002-1 (V1.2): "Integrated Services Digital Network (ISDN); Security tools (SET)
procedures; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1: Protocol
specification".
[31] ETSI EN 301 005-1 (V1.1): "V interfaces at the digital Service Node (SN); Interfaces at the VB5.1
reference point for the support of broadband or combined narrowband and broadband Access
Networks (ANs); Part 1: Interface specification".
[32] ETSI EN 301 060-1 (V.1.2): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) protocol; Basic call control; Enhancement at the "b" service
entry point for Virtual Private Network (VPN) applications; Part 1: Protocol specification".
[33] ETSI EN 301 061-1 (V1.2): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) protocol; Generic functional protocol for the support of
supplementary services at the "b" service entry point for Virtual Private Network (VPN)
applications; Part 1: Protocol specification".
[34] ETSI EN 301 065-1 (V1.2): "Integrated Services Digital Network (ISDN); Completion of Calls on
No Reply (CCNR) supplementary service; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[35] ETSI EN 301 141-1 (V1.2) "Integrated Services Digital Network (ISDN); Narrowband Multi-
service Delivery System (NMDS); Part 1: NMDS interface specification".
[36] ETSI EN 301 144-1 (V1.1): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) and Signalling System No.7 (SS7); Signalling application for
the mobility management service on the alpha interface; Part 1: Protocol specification".
[37] ETSI EN 302 094-1 (V1.1): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1) protocol and Signalling System No. 7 (SS7) protocols; Call
Forwarding on Not Reachable (CFNRc) supplementary service for Cordless Terminal Mobility
(CTM) phase 1; Part 1: Protocol specification".
[38] ETSI EN 301 484-1 (V1.1): "Integrated Services Digital Network (ISDN); Line Hunting (LH)
supplementary service; Digital Subscriber Signalling System No. one (DSS1); Part 1: Protocol
specification".
[39] ITU-T Recommendation Q.931 (1998): "ISDN user-network interface layer 3 specification for
basic call control".
ETSI
8 ETSI EG 201 189 V1.4.1 (2000-09)
[40] ITU-T Recommendation Q.2931 (1995): "Broadband Integrated Services Digital Network
(B-ISDN) - Digital Subscriber Signalling System No. 2 (DSS 2) - User-Network Interface
(UNI) - Layer 3 specification for basic call/connection control".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following definitions apply:
Integrated Services Digital Network (ISDN): see ITU-T Recommendation I.112 [1], definition 308
network: DSS1 protocol entity at the network side of the user-network interface
service; telecommunication service: see ITU-T Recommendation I.112 [1], definition 201
supplementary service: see ITU-T Recommendation I.210 [2], subclause 2.4
user: DSS1 protocol entity at the user side of the user-network interface
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
3PTY Three-Party
ASN.1 Abstract Syntax Notation one
BER Basic Encoding Rules
CCBS Completion of Calls to Busy Subscriber
CCNR Completion of Calls on No Reply
CFNRc Call Forwarding on Not Reachable
CONF Conference call, add-on
CUG Closed User Group
DSS1 Digital Subscriber Signalling System No. one
ECT Explicit Call Transfer
FPH Freephone
HOLD Call Hold
ISDN Integrated Services Digital Network
LH Line Hunting
MWI Message Waiting Indication
OCB Outgoing Call Barring
SCF Selective Call Forwarding
SET Security Tools
USBS User Signalling Bearer Service
UUS User-to-User Signalling
ETSI
9 ETSI EG 201 189 V1.4.1 (2000-09)
4 DSS1 message codepoints
The DSS1 messages and their associated codepoints are shown in table 1. The reference indicates the ETSI
specification that contains the message definition.
Table 1: DSS1 message codepoints
Message type
Bit Message Reference
8 765 432 1
0 0 0 0 0 0 0 0 Escape to nationally specific message type EN 300 403-1 [25]
0 0 0 - --- - Call establishment messages
0 0 0 0 1 ALERTING ETS 300 007 [5],
EN 300 403-1 [25]
0 0 0 1 0 CALL PROCEEDING ETS 300 007 [5],
EN 300 403-1 [25]
0 0 0 1 1 PROGRESS ETS 300 007 [5],
EN 300 403-1 [25]
0 0 1 0 1 SETUP ETS 300 007 [5],
EN 300 403-1 [25]
0 0 1 1 1 CONNECT ETS 300 007 [5],
EN 300 403-1 [25]
0 1 1 1 1 CONNECT ACKNOWLEDGE ETS 300 007 [5],
EN 300 403-1 [25]
0 1 1 0 1 SETUP ACKNOWLEDGE EN 300 403-1 [25]
0 0 1 - --- - Call information phase messages
0 0 0 0 0 USER INFORMATION EN 300 286-1 [18]
0 0 0 0 1 SUSPEND REJECT EN 300 403-1 [25]
0 0 0 1 0 RESUME REJECT EN 300 403-1 [25]
0 0 1 0 0 HOLD EN 300 196-1 [15]
0 0 1 0 1 SUSPEND EN 300 403-1 [25]
0 0 1 1 0 RESUME EN 300 403-1 [25]
0 1 0 0 0 HOLD ACKNOWLEDGE EN 300 196-1 [15]
0 1 1 0 1 SUSPEND ACKNOWLEDGE EN 300 403-1 [25]
0 1 1 1 0 RESUME ACKNOWLEDGE EN 300 403-1 [25]
1 0 0 0 0 HOLD REJECT EN 300 196-1 [15]
1 0 0 0 1 RETRIEVE EN 300 196-1 [15]
1 0 0 1 1 RETRIEVE ACKNOWLEDGE EN 300 196-1 [15]
1 0 1 1 1 RETRIEVE REJECT EN 300 196-1 [15]
0 1 0 - --- - Call clearing messages
0 0 0 0 0 DETACH (note)
0 0 1 0 1 DISCONNECT ETS 300 007 [5],
EN 300 403-1 [25]
0 0 1 1 0 RESTART EN 300 403-1 [25]
0 1 0 0 0 DETACH ACKNOWLEDGE (note)
0 1 1 0 1 RELEASE ETS 300 007 [5],
EN 300 196-1 [15],
EN 300 403-1 [25]
0 1 1 1 0 RESTART ACKNOWLEDGE EN 300 403-1 [25]
1 1 0 1 0 RELEASE COMPLETE ETS 300 007 [5],
EN 300 196-1 [15],
EN 300 403-1 [25]
ETSI
10 ETSI EG 201 189 V1.4.1 (2000-09)
Message type
Bit Message Reference
8 765 432 1
Miscellaneous messages
0 1 1 - --- -
0 0 0 0 0 SEGMENT EN 300 403-1 [25]
0 0 0 1 0 FACILITY EN 300 196-1 [15]
0 0 1 0 0 REGISTER EN 300 196-1 [15]
0 1 1 1 0 NOTIFY EN 300 196-1 [15],
EN 300 403-1 [25]
1 0 1 0 1 STATUS ENQUIRY ETS 300 007 [5],
EN 300 196-1 [15],
EN 300 403-1 [25]
1 1 0 0 1 CONGESTION CONTROL EN 300 286-1 [18]
1 1 0 1 1 INFORMATION EN 300 403-1 [25]
1 1 1 0 1 STATUS ETS 300 007 [5],
EN 300 196-1 [15],
EN 300 403-1 [25]
NOTE: This message codepoint is obsolete, but the value is reserved for reasons of backwards compatibility.
ETSI
11 ETSI EG 201 189 V1.4.1 (2000-09)
5 DSS1 information element codepoints
5.1 Codeset 0
The DSS1 information elements and their associated codepoints, which are defined in codeset 0, are shown in table 2.
The reference indicates the ETSI specification that contains the information element definition.
Table 2: DSS1 information element codepoints
Information element
identifier Information element Reference
Bit
8 765 432 1
1 ::: - - - - Single octet information elements
0 0 0 - - - - Reserved EN 300 403-1 [25]
0 0 1 - - - - Shift EN 300 403-1 [25]
0 1 0 0 0 0 0 More data EN 300 286-1 [18]
0 1 0 0 0 0 1 Sending complete EN 300 403-1 [25]
0 1 1 - - - - Congestion level EN 300 286-1 [18]
1 0 1 - - - - Repeat indicator (note)
0 ::: ::: : Variable length information elements
0 0 0 0 0 0 0 Segmented message EN 300 403-1 [25]
0 0 0 0 1 0 0 Bearer capability EN 300 403-1 [25]
0 0 0 0 1 0 1 VPN indicator EN 301 060-1 [32]
0 0 0 1 0 0 0 Cause EN 300 403-1 [25]
0 0 0 1 1 0 1 Extended facility EN 300 196-1 [15]
0 0 1 0 0 0 0 Call identity EN 300 403-1 [25]
0 0 1 0 1 0 0 Call state EN 300 196-1 [15],
EN 300 403-1 [25]
0 0 1 1 0 0 0 Channel identification EN 300 403-1 [25]
0 0 1 1 1 0 0 Facility EN 300 196-1 [15]
0 0 1 1 1 1 0 Progress indicator EN 300 403-1 [25]
EN 301 060-1 [32]
0 1 0 0 0 0 0 Network-specific facilities EN 300 403-1 [25]
0 1 0 0 1 1 1 Notification indicator EN 300 196-1 [15],
EN 300 403-1 [25]
0 1 0 1 0 0 0 Display EN 300 403-1 [25]
0 1 0 1 0 0 1 Date/time EN 300 403-1 [25]
0 1 0 1 1 0 0 Keypad facility EN 300 403-1 [25]
0 1 1 0 1 0 0 Signal (note)
0 1 1 0 1 1 0 Switchhook (note)
0 1 1 1 0 0 0 Feature activation (note)
0 1 1 1 0 0 1 Feature indication (note)
1 0 0 0 0 0 0 Information rate (note)
1 0 0 0 0 1 0 End-to-end transit delay (note)
1 0 0 0 0 1 1 Transit delay selection and indication (note)
1 0 0 0 1 0 0 Packet layer binary parameters (note)
1 0 0 0 1 0 1 Packet layer window size (note)
1 0 0 0 1 1 0 Packet size (note)
1 0 0 0 1 1 1 Closed user group (note)
1 0 0 1 0 1 0 Reverse charge indication (note)
ETSI
12 ETSI EG 201 189 V1.4.1 (2000-09)
Information element
identifier Information element Reference
Bit
8 765 432 1
0 ::: ::: : Variable length information elements (continued)
1 0 0 1 1 0 0 Connected number EN 300 097-1 [7]
1 0 0 1 1 0 1 Connected subaddress EN 300 097-1 [7]
1 1 0 1 1 0 0 Calling party number EN 300 403-1 [25]
EN 301 060-1 [32]
1 1 0 1 1 0 1 Calling party subaddress EN 300 403-1 [25]
1 1 1 0 0 0 0 Called party number EN 300 403-1 [25]
EN 301 060-1 [32]
1 1 1 0 0 0 1 Called party subaddress EN 300 403-1 [25]
1 1 1 0 1 0 0 Redirecting number ETS 300 007 [5],
EN 300 207-1 [16]
1 1 1 0 1 1 0 Redirection number EN 300 207-1 [16]
1 1 1 1 0 0 0 Transit network selection EN 300 403-1 [25]
1 1 1 1 0 0 1 Restart indicator EN 300 403-1 [25]
1 1 1 1 1 0 0 Low layer compatibility EN 300 403-1 [25]
1 1 1 1 1 0 1 High layer compatibility EN 300 403-1 [25]
1 1 1 1 1 1 0 User-user EN 300 286-1 [18]
1 1 1 1 1 1 1 Escape for extension EN 300 403-1 [25]
All other values are reserved.
NOTE: Not applicable in networks conforming to ETSI specifications.
5.2 Codeset 4
The DSS1 information elements and their associated codepoints, which are defined in codeset 4, are shown in table 3.
Table 3: DSS1 information element codepoints
Information element
identifier Information element Reference
Bit
8 765 432 1
0 ::: ::: : Variable length information elements
0 1 1 0 0 0 1 Transit counter EN 301 060-1 [32]
ETSI
13 ETSI EG 201 189 V1.4.1 (2000-09)
5.3 Codeset 5
The DSS1 information elements and their associated codepoints, which are defined in codeset 5, are shown in table 4.
Table 4: DSS1 information element codepoints
Information element
identifier Information element Reference
Bit
8 765 432 1
1 ::: - - - - Single octet information elements
0 0 0 - - - - Reserved
001 - - - - Shift
0 ::: ::: : Variable length information elements
0 0 0 1 1 0 0 Connected number (note)
0 0 0 1 1 0 1 Connected subaddress (note)
0 0 1 1 0 1 0 Charge advice (note)
0 1 0 0 0 0 0 Network-specific facilities (note)
0 1 0 1 0 0 1 Date/time (note)
NOTE: This information element codepoint is obsolete but the value is reserved for reasons of backwards
compatibility.
ETSI
14 ETSI EG 201 189 V1.4.1 (2000-09)
6 Protocol discriminator values
The protocol discriminator values are shown in table 5. The reference indicates the ETSI specification that contains the
definition of the relevant value.
Table 5: Protocol discriminator values
Protocol discriminator
value Meaning Reference
Bit
8 765 432 1
0 0 0 0 0 0 0 0 Assigned for user-to-user signalling (see EN 300 286-1 [18])
through - not available for use in the message protocol discriminator
0 0 0 001 1 1
0 0 0 0 1 0 0 0 Q.931 [39] user-network call control messages EN 300 403-1 [25]
0 0 0 0 1 0 0 1 Q.2931 [40] user-network call control messages EN 300 443-1 [27]
0 0 0 1 0 0 0 0 Reserved for other network layer or layer 3 protocols,
through including ITU-T Recommendation X.25 [4] (note)
0 0 1 111 1 1
0 1 0 000 0 0
through National use
0 1 0 001 1 1
0 1 0 0 1 0 0 0 V5 protocol EN 300 324-1 [19],
EN 300 347-1 [20]
EN 301 141-1 [35]
0 1 0 0 1 0 0 1 VB5.1 protocol EN 301 005-1 [31]
0 1 0 010 1 0
through Reserved for ETSI use
0 1 0 011 1 1
0 1 0 1 0 0 0 0 Reserved for other network layer or layer 3 protocols,
through including ITU-T Recommendation X.25 [4] (note)
1 1 1 111 1 0
All other values are reserved.
NOTE: These values are reserved to discriminate these protocol discriminators from the first octet of a X.25 [4]
packet including general format identifier.
ETSI
15 ETSI EG 201 189 V1.4.1 (2000-09)
7 Notifications
...