ETSI EG 201 189 V1.4.1 (2000-09)

SLOVENSKI STANDARD
SIST-V ETSI/EG 201 189 V1.4.1:2003
01-november-2003
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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)
SIST-V ETSI/EG 201 189 V1.4.1:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

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SIST-V ETSI/EG 201 189 V1.4.1:2003
ETSI EG 201 189 V1.4.1 (2000-09)
ETSI Guide
Integrated Services Digital Network (ISDN);
Digital Subscriber Signalling System No. one (DSS1) protocol;
Master list of codepoints and operation values

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SIST-V ETSI/EG 201 189 V1.4.1:2003
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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© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI

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

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

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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

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[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]".
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[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".
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[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
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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]
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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

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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)
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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]
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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.
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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

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SIST-V ETSI/EG 201 189 V1.4.1:2003
15 ETSI EG 201 189 V1.4.1 (2000-09)
7 Notifications
7.1 Notification indicator values
The notification indicator values are shown in table 6. The reference indicates the ETSI specification that contains the
definition of the relevant value.
Table 6: Notification indicator values
Notification indicator
value Meaning Reference
Bit
8 765 432 1
1 0 0 0 0 0 0 0 User suspended EN 300 403-1 [25]
1 0 0 0 0 0 0 1 User resumed EN 300 403-1 [25]
1 0 0 0 0 0 1 0 Bearer service change (note)
1 0 0 0 0 0 1 1 Discriminator fo
...