SIST EN 300 175-5 V2.6.1:2015

Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer

The present document is one of the parts of the specification of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI).
The present document specifies the Network (NWK) layer. The NWK layer is part 5 of the ETSI EN 300 175 and layer 3 of the DECT protocol stack. The present document only specifies the C-plane (control plane) of the DECT NWK layer. It contains no specification for the U-plane (user plane) because the U-plane is null for all services at the DECT NWK layer. The C-plane contains all of the internal signalling information, and the NWK layer protocols are grouped into the following families of procedures:
• Call Control (CC);
• Supplementary Services (SS);
• Connection Oriented Message Service (COMS);
• ConnectionLess Message Service (CLMS);
• Mobility Management (MM);
• Link Control Entity (LCE).
The present document uses the layered model principles and terminology as described in Recommendations ITU-T X.200 [i.3] and X.210 [i.4].
The present document includes New Generation DECT, a further development of the DECT standard introducing wideband speech, improved data services, new slot types and other technical enhancements.

Digitalne izboljšane brezvrvične telekomunikacije (DECT) - Skupni vmesnik (CI) - 5. del: Omrežna plast (NWK)

Ta dokument je eden od delov specifikacije skupnega vmesnika (CI) za digitalne izboljšane brezvrvične telekomunikacije (DECT).
Ta dokument določa omrežno plast (NWK). Omrežna plast je 5. del standarda ETSI EN 300 175 in plast 3 sklada protokolov digitalnih izboljšanih brezvrvičnih telekomunikacij. Ta dokument določa samo C-raven (nadzorno raven) omrežne plasti digitalnih izboljšanih brezvrvičnih telekomunikacij. Ne vsebuje specifikacije za U-raven (uporabniško raven), ker je U-raven na omrežni plasti digitalnih izboljšanih brezvrvičnih telekomunikacij enaka nič za vse storitve. C-raven vsebuje vse notranje signalizacijske informacije in protokoli omrežne plasti so združeni v naslednje družine postopkov:
• nadzor klicev (CC);
• nadomestne storitve (SS);
• sporočilna storitev, usmerjena na povezavo (COMS);
• sporočilna storitev brez povezave (COMS);
• upravljanje mobilnosti (MM);
• entiteta kontrole povezave (LCE).
Ta dokument uporablja načela in terminologijo modela plasti, kot je opisano v priporočilih ITU-T X.200 [i.3] in X.210 [i.4].
Ta dokument vključuje novo generacijo digitalnih izboljšanih brezvrvičnih telekomunikacij, nadaljnji razvoj standarda za digitalne izboljšane brezvrvične telekomunikacije, ki uvaja širokopasovni govor, izpopolnjene podatkovne storitve, nove tipe rež in druge tehnične izpopolnitve.

General Information

• Status: Published
• Publication Date: 04-Oct-2015
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 35.100.30 - Network layer
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Aug-2015
• Due Date: 09-Oct-2015
• Completion Date: 05-Oct-2015
• Ref Project: ETSI EN 300 175-5 V2.6.1 (2015-07) - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer

Overview

SIST EN 300 175-5 V2.6.1:2015 / ETSI EN 300 175-5 V2.6.1 (2015-07) defines the Network (NWK) layer of the Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). This document specifies the NWK layer (layer 3 of the DECT protocol stack) focusing exclusively on the control plane (C‑plane); the user plane (U‑plane) is null at this layer. It follows layered model principles from ITU‑T X.200 and X.210 and incorporates New Generation DECT enhancements such as wideband speech, improved data services and new slot types.

Key topics and technical requirements

The standard groups NWK layer protocols into families of procedures and message structures. Major technical topics include:

• Call Control (CC): call establishment, service negotiation, connect, call information, service change and release procedures.
• Supplementary Services (SS): keypad protocol, feature key management and other functional protocols.
• Connection Oriented Message Service (COMS): establishment, service negotiation, data transfer, suspend/resume and release.
• ConnectionLess Message Service (CLMS): fixed and variable length message handling.
• Mobility Management (MM): identity, authentication, location, access rights, key allocation, parameter retrieval and ciphering-related procedures.
• Link Control Entity (LCE): data link establishment/re‑establishment, DLEI (Data Link Endpoint Identifier), queuing, suspend/resume and paging.
• Message structures and S‑FORMAT: definitions of messages and information elements, with functional summaries for CC, SS, COMS, CLMS, MM and LCE message sets.

The document provides formal message definitions, procedural overviews and is aligned with DECT CI architecture requirements. It applies to implementations conforming to the ETSI EN 300 175 suite.

Practical applications - who uses this standard

This NWK layer specification is essential for:

• DECT equipment manufacturers (handsets, base stations, IP‑DECT systems) implementing the DECT CI protocol stack.
• Firmware and protocol engineers developing DECT layer‑3 control logic (call state, mobility, messaging).
• Test laboratories and certification bodies performing conformance and interoperability testing to ETSI/SIST requirements.
• System integrators and network designers deploying DECT solutions for enterprise wireless voice and data services.
• Standards bodies and researchers working on DECT evolution and wideband speech/data enhancements.

Related standards

• ETSI EN 300 175 (other parts of the DECT Common Interface specification)
• ITU‑T Recommendations X.200 and X.210 (layered model terminology and principles)
• New Generation DECT technical documents referenced within the ETSI suite

Keywords: DECT, NWK layer, Network layer, Common Interface CI, Call Control, Mobility Management, COMS, CLMS, LCE, New Generation DECT, ETSI EN 300 175-5, SIST EN 300 175-5.

Standards Content (Sample)

Draft ETSI EN 300 175-5 V2.5.8 (2015-03)

EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 5: Network (NWK) layer
2 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)

Reference
REN/DECT-000304-5
Keywords
DECT, IMT-2000, mobility, radio, TDD, TDMA
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2015.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)
Contents
Intellectual Property Rights . 16
Foreword . 16
Modal verbs terminology . 16
1 Scope . 17
2 References . 17
2.1 Normative references . 17
2.2 Informative references . 22
3 Definitions, symbols and abbreviations . 23
3.1 Definitions . 23
3.2 Symbols and abbreviations . 23
4 Overview of the NWK layer . 27
5 Overview of procedures . 29
5.1 General . 29
5.2 Overview of Call Control (CC) . 29
5.2.1 General . 29
5.2.2 Call establishment . 30
5.2.2.1 Call setup . 30
5.2.2.2 Service negotiation . 30
5.2.3 Call connect . 30
5.2.4 Call information . 31
5.2.5 Service change . 31
5.2.6 Call release. 31
5.3 Overview of Supplementary Services (SS) . 31
5.3.1 General . 31
5.3.2 Keypad protocol . 32
5.3.3 Feature key management protocol . 32
5.3.4 Functional protocol . 32
5.4 Overview of Connection Oriented Message Service (COMS) . 33
5.4.1 General . 33
5.4.2 COMS establishment . 33
5.4.3 Service negotiation . 33
5.4.4 COMS connect . 33
5.4.5 COMS data transfer . 33
5.4.6 COMS suspend and resume . 34
5.4.7 COMS release . 34
5.5 Overview of ConnectionLess Message Service (CLMS) . 34
5.5.0 General . 34
5.5.1 Fixed length message service. 34
5.5.2 Variable length message service . 34
5.6 Overview of Mobility Management (MM) . 35
5.6.1 General . 35
5.6.2 Identity procedures . 35
5.6.3 Authentication procedures . 35
5.6.4 Location procedures . 36
5.6.5 Access rights procedures . 36
5.6.6 Key allocation procedure . 37
5.6.7 Parameter retrieval procedure . 37
5.6.8 Ciphering related procedure . 37
5.6.9 External protocol information procedure . 37
5.7 Overview of Link Control Entity (LCE) . 37
5.7.1 General . 37
5.7.2 Data Link Endpoint Identifier (DLEI) . 38
5.7.3 Data link establishment . 38
5.7.4 Data link re-establishment . 38
ETSI
4 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)
5.7.5 Data link release . 39
5.7.6 Data link suspend and resume. 39
5.7.7 Queuing of messages . 39
5.7.8 Request paging . 39
6 Message functional definitions . 40
6.1 Overview of message structures . 40
6.1.1 Messages . 40
6.1.2 Information elements . 40
6.2 Message summaries . 41
6.2.1 Summary of CC messages . 41
6.2.2 Summary of CISS messages . 41
6.2.3 Summary of COMS messages . 41
6.2.4 Summary of CLMS messages . 42
6.2.5 Summary of MM messages . 42
6.2.6 Summary of LCE messages . 42
6.3 S-FORMAT message functional contents . 43
6.3.1 S-FORMAT message overview . 43
6.3.2 CC-messages. 43
6.3.2.1 {CC-SETUP} . 43
6.3.2.2 {CC-INFO} . 45
6.3.2.3 {CC-SETUP-ACK} . 46
6.3.2.4 {CC-CALL-PROC} . 47
6.3.2.5 {CC-ALERTING} . 48
6.3.2.6 {CC-CONNECT} . 49
6.3.2.7 {CC-CONNECT-ACK} . 50
6.3.2.8 {CC-RELEASE} . 51
6.3.2.9 {CC-RELEASE-COM} . 52
6.3.2.10 {CC-SERVICE-CHANGE} . 53
6.3.2.11 {CC-SERVICE-ACCEPT} . 54
6.3.2.12 {CC-SERVICE-REJECT} . 54
6.3.2.13 {CC-NOTIFY}. 55
6.3.2.14 {IWU-INFO} . 55
6.3.3 SS-messages (call related and call independent) . 56
6.3.3.1 {FACILITY} . 56
6.3.3.2 {HOLD} . 57
6.3.3.3 {HOLD-ACK} . 57
6.3.3.4 {HOLD-REJECT} . 58
6.3.3.5 {RETRIEVE} . 58
6.3.3.6 {RETRIEVE-ACK} . 59
6.3.3.7 {RETRIEVE-REJECT} . 59
6.3.3.8 {CISS-REGISTER} . 60
6.3.3.9 {CISS-RELEASE-COM} . 61
6.3.4 COMS-messages . 61
6.3.4.1 {COMS-SETUP} . 61
6.3.4.2 {COMS-INFO} . 62
6.3.4.3 {COMS-ACK} . 63
6.3.4.4 {COMS-CONNECT} . 63
6.3.4.5 {COMS-RELEASE} . 64
6.3.4.6 {COMS-RELEASE-COM} . 64
6.3.4.7 {COMS-NOTIFY}. 65
6.3.5 CLMS-message . 65
6.3.5.1 {CLMS-VARIABLE} . 65
6.3.6 MM-messages . 66
6.3.6.1 {ACCESS-RIGHTS-ACCEPT} . 66
6.3.6.2 {ACCESS-RIGHTS-REJECT} . 66
6.3.6.3 {ACCESS-RIGHTS-REQUEST} . 67
6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT} . 67
6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT} . 68
6.3.6.6 {ACCESS-RIGHTS-T ERMI NAT E-REQUEST } . 68
6.3.6.7 {AUTHENTICATION-REJECT} . 69
6.3.6.8 {AUTHENTICATION-REPLY} . 70
ETSI
5 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)
6.3.6.9 {AUTHENTICATION-REQUEST} . 71
6.3.6.10 {CIPHER-REJECT} . 71
6.3.6.11 {CIPHER-REQUEST} . 72
6.3.6.12 {CIPHER-SUGGEST} . 72
6.3.6.13 {DETACH} . 72
6.3.6.14 {IDENTITY-REPLY} . 73
6.3.6.15 {IDENTITY-REQUEST} . 74
6.3.6.16 {KEY-ALLOCATE} . 74
6.3.6.17 {LOCATE-ACCEPT} . 75
6.3.6.18 {LOCATE-REJECT} . 75
6.3.6.19 {LOCATE-REQUEST} . 76
6.3.6.20 {MM-INFO-ACCEPT} . 77
6.3.6.21 {MM-INFO-REJECT} . 77
6.3.6.22 {MM-INFO-REQUEST} . 78
6.3.6.23 {MM-INFO-SUGGEST} . 78
6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN} . 79
6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK} . 80
6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ} . 80
6.3.6.27 {MM-IWU} . 81
6.3.6.28 {MM-NOTIFY} . 81
6.3.7 LCE-messages . 82
6.3.7.1 {LCE-PAGE-RESPONSE} . 82
6.3.7.2 {LCE-PAGE-REJECT} . 82
6.4 B-FORMAT message functional contents . 82
6.4.1 B-FORMAT message overview . 82
6.4.2 {LCE-REQUEST-PAGE} . 83
6.4.3 {CLMS-FIXED}. 83
7 S-FORMAT message structures . 84
7.1 Overview . 84
7.2 Protocol Discrimination (PD) element . 84
7.3 Transaction Identifier (TI) element . 85
7.4 Message type element . 86
7.4.0 General . 86
7.4.1 Messages for CC . 86
7.4.2 Messages for SS . 86
7.4.3 Messages for COMS . 87
7.4.4 Messages for CLMS . 87
7.4.5 Messages for MM . 87
7.4.6 Messages for LCE . 88
7.5 Other information elements . 88
7.5.1 Coding rules . 88
7.5.2 Extensions of codesets . 90
7.5.3 Locking shift procedure . 90
7.5.4 Non-locking shift procedure . 91
7.5.5 Display and keypad elements. 91
7.5.6 Repeated elements . 92
7.6 Fixed length information elements . 92
7.6.1 Summary . 92
7.6.2 Sending complete, delimiter request and use TPUI . 92
7.6.3 Repeat indicator . 93
7.6.4 Basic service . 93
7.6.5 Single display. 94
7.6.6 Single keypad . 95
7.6.7 Release reason . 95
7.6.8 Signal . 96
7.6.9 Timer restart. 97
7.6.10 Test hook control . 97
7.7 Variable length information elements . 98
7.7.1 Summary . 98
7.7.2 Allocation type . 99
7.7.3 Alphanumeric . 100
ETSI
6 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)
7.7.4 Auth type . 101
7.7.5 Call attributes . 103
7.7.6 Call identity . 107
7.7.7 Called party number. 107
7.7.8 Called party subaddress . 108
7.7.9 Calling party number . 109
7.7.10 Cipher info . 110
7.7.11 Connection attributes . 111
7.7.12 Connection identity . 114
7.7.13 Duration . 115
7.7.14 End-to-end compatibility . 116
7.7.15 Facility . 119
7.7.16 Feature activate . 120
7.7.17 Feature indicate . 122
7.7.18 Fixed identity . 124
7.7.19 Identity type . 125
7.7.20 Info type . 126
7.7.21 InterWorking Unit (IWU) attributes . 127
7.7.22 IWU packet . 131
7.7.23 IWU to IWU . 133
7.7.24 Key. 135
7.7.25 Location area . 135
7.7.26 Multi-display. 136
7.7.27 Multi-keypad. 136
7.7.28 NetWorK (NWK) assigned identity . 137
7.7.29 Network parameter . 138
7.7.30 Portable identity . 140
7.7.31 Progress indicator . 144
7.7.32 RAND . 145
7.7.33 Rate parameters . 145
7.7.34 Reject reason . 147
7.7.35 RES . 148
7.7.36 RS . 148
7.7.37 Segmented info . 149
7.7.38 Service change info . 149
7.7.39 Service class. 151
7.7.40 Setup capability . 151
7.7.41 Terminal capability . 152
7.7.42 Transit delay . 158
7.7.43 Window size . 159
7.7.44 ZAP field . 160
7.7.45 Escape to proprietary . 160
7.7.46 Model identifier . 161
7.7.47 MMS Generic Header . 162
7.7.48 MMS Object Header . 162
7.7.49 MMS Extended header . 162
7.7.50 Time-Date . 162
7.7.51 Ext h/o indicator . 164
7.7.52 Called party Name . 165
7.7.53 Calling party Name . 166
7.7.54 Codec List . 166
7.7.55 Events notification . 168
7.7.55.1 General structure . 168
7.7.55.2 Event types . 169
7.7.56 Call information . 173
7.7.57 List change details . 176
7.7.58 ULE MAC Configuration Info. 178
8 B-FORMAT message structures . 179
8.1 General . 179
8.2 LCE request paging messages . 179
8.2.0 General . 179
ETSI
7 Draft ETSI EN 300 175-5 V2.5.8 (2015-03)
8.2.1 Short format message. 180
8.2.2 Full format message . 181
8.2.3 Long format message . 182
8.2.4 Message elements . 182
8.2.4.1 LCE paging header . 182
8.2.4.2 Info fields (Full format) . 184
8.2.4.3 Default setup behaviour . 185
8.2.4.4 Address elements in collective or group ringing . 186
8.3 CLMS-FIXED messages . 187
8.3.1 General message structure . 187
8.3.2 Message elements . 187
8.3.3 Standard message structures . 189
8.3.3.1 General . 189
8.3.3.2 Messages using 4-bit characters . 189
8.3.3.3 Messages using 8-bit characters . 189
9 Call Control (CC) procedures . 189
9.1 General . 189
9.2 Call Control (CC) states . 193
9.2.1 States at PT . 193
9.2.1.0 General . 193
9.2.1.1 State T-00: "NULL" . 193
9.2.1.2 State T-19: "RELEASE PENDING" . 193
9.2.1.3 State T-10: "ACTIVE" . 193
9.2.1.4 State T-01: "CALL INITIATED" . 193
9.2.1.5 State T-02: "OVERLAP SENDING" . 193
9.2.1.6 State T-03: "CALL PROCEEDING" . 193
9.2.1.7 State T-04: "CALL DELIVERED" . 193
9.2.1.8 State T-06: "CALL PRESENT" .
...

EUROPEAN STANDARD
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 5: Network (NWK) layer
2 ETSI EN 300 175-5 V2.6.1 (2015-07)

Reference
REN/DECT-000304-5
Keywords
DECT, IMT-2000, mobility, radio, TDD, TDMA
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
http://portal.etsi.org/tb/status/status.asp
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2015.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members.
TM
3GPP and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association.
ETSI
3 ETSI EN 300 175-5 V2.6.1 (2015-07)
Contents
Intellectual Property Rights . 16
Foreword . 16
Modal verbs terminology . 16
1 Scope . 17
2 References . 17
2.1 Normative references . 17
2.2 Informative references . 22
3 Definitions, symbols and abbreviations . 23
3.1 Definitions . 23
3.2 Symbols and abbreviations . 23
4 Overview of the NWK layer . 27
5 Overview of procedures . 29
5.1 General . 29
5.2 Overview of Call Control (CC) . 29
5.2.1 General . 29
5.2.2 Call establishment . 30
5.2.2.1 Call setup . 30
5.2.2.2 Service negotiation . 30
5.2.3 Call connect . 30
5.2.4 Call information . 31
5.2.5 Service change . 31
5.2.6 Call release. 31
5.3 Overview of Supplementary Services (SS) . 31
5.3.1 General . 31
5.3.2 Keypad protocol . 32
5.3.3 Feature key management protocol . 32
5.3.4 Functional protocol . 32
5.4 Overview of Connection Oriented Message Service (COMS) . 33
5.4.1 General . 33
5.4.2 COMS establishment . 33
5.4.3 Service negotiation . 33
5.4.4 COMS connect . 33
5.4.5 COMS data transfer . 33
5.4.6 COMS suspend and resume . 34
5.4.7 COMS release . 34
5.5 Overview of ConnectionLess Message Service (CLMS) . 34
5.5.0 General . 34
5.5.1 Fixed length message service. 34
5.5.2 Variable length message service . 34
5.6 Overview of Mobility Management (MM) . 35
5.6.1 General . 35
5.6.2 Identity procedures . 35
5.6.3 Authentication procedures . 35
5.6.4 Location procedures . 36
5.6.5 Access rights procedures . 36
5.6.6 Key allocation procedure . 37
5.6.7 Parameter retrieval procedure . 37
5.6.8 Ciphering related procedure . 37
5.6.9 External protocol information procedure . 37
5.7 Overview of Link Control Entity (LCE) . 37
5.7.1 General . 37
5.7.2 Data Link Endpoint Identifier (DLEI) . 38
5.7.3 Data link establishment . 38
5.7.4 Data link re-establishment . 38
ETSI
4 ETSI EN 300 175-5 V2.6.1 (2015-07)
5.7.5 Data link release . 39
5.7.6 Data link suspend and resume. 39
5.7.7 Queuing of messages . 39
5.7.8 Request paging . 39
6 Message functional definitions . 40
6.1 Overview of message structures . 40
6.1.1 Messages . 40
6.1.2 Information elements . 40
6.2 Message summaries . 41
6.2.1 Summary of CC messages . 41
6.2.2 Summary of CISS messages . 41
6.2.3 Summary of COMS messages . 41
6.2.4 Summary of CLMS messages . 42
6.2.5 Summary of MM messages . 42
6.2.6 Summary of LCE messages . 42
6.3 S-FORMAT message functional contents . 43
6.3.1 S-FORMAT message overview . 43
6.3.2 CC-messages. 43
6.3.2.1 {CC-SETUP} . 43
6.3.2.2 {CC-INFO} . 45
6.3.2.3 {CC-SETUP-ACK} . 46
6.3.2.4 {CC-CALL-PROC} . 47
6.3.2.5 {CC-ALERTING} . 48
6.3.2.6 {CC-CONNECT} . 49
6.3.2.7 {CC-CONNECT-ACK} . 50
6.3.2.8 {CC-RELEASE} . 50
6.3.2.9 {CC-RELEASE-COM} . 51
6.3.2.10 {CC-SERVICE-CHANGE} . 52
6.3.2.11 {CC-SERVICE-ACCEPT} . 53
6.3.2.12 {CC-SERVICE-REJECT} . 53
6.3.2.13 {CC-NOTIFY}. 54
6.3.2.14 {IWU-INFO} . 54
6.3.3 SS-messages (call related and call independent) . 55
6.3.3.1 {FACILITY} . 55
6.3.3.2 {HOLD} . 56
6.3.3.3 {HOLD-ACK} . 56
6.3.3.4 {HOLD-REJECT} . 57
6.3.3.5 {RETRIEVE} . 57
6.3.3.6 {RETRIEVE-ACK} . 58
6.3.3.7 {RETRIEVE-REJECT} . 58
6.3.3.8 {CISS-REGISTER} . 59
6.3.3.9 {CISS-RELEASE-COM} . 60
6.3.4 COMS-messages . 60
6.3.4.1 {COMS-SETUP} . 60
6.3.4.2 {COMS-INFO} . 61
6.3.4.3 {COMS-ACK} . 61
6.3.4.4 {COMS-CONNECT} . 62
6.3.4.5 {COMS-RELEASE} . 62
6.3.4.6 {COMS-RELEASE-COM} . 63
6.3.4.7 {COMS-NOTIFY}. 63
6.3.5 CLMS-message . 64
6.3.5.1 {CLMS-VARIABLE} . 64
6.3.6 MM-messages . 65
6.3.6.1 {ACCESS-RIGHTS-ACCEPT} . 65
6.3.6.2 {ACCESS-RIGHTS-REJECT} . 65
6.3.6.3 {ACCESS-RIGHTS-REQUEST} . 66
6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT} . 66
6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT} . 67
6.3.6.6 {ACCESS-RIGHTS-T ERMI NAT E-REQUEST } . 67
6.3.6.7 {AUTHENTICATION-REJECT} . 68
6.3.6.8 {AUTHENTICATION-REPLY} . 68
ETSI
5 ETSI EN 300 175-5 V2.6.1 (2015-07)
6.3.6.9 {AUTHENTICATION-REQUEST} . 69
6.3.6.10 {CIPHER-REJECT} . 70
6.3.6.11 {CIPHER-REQUEST} . 70
6.3.6.12 {CIPHER-SUGGEST} . 71
6.3.6.13 {DETACH} . 71
6.3.6.14 {IDENTITY-REPLY} . 72
6.3.6.15 {IDENTITY-REQUEST} . 72
6.3.6.16 {KEY-ALLOCATE} . 73
6.3.6.17 {LOCATE-ACCEPT} . 73
6.3.6.18 {LOCATE-REJECT} . 74
6.3.6.19 {LOCATE-REQUEST} . 74
6.3.6.20 {MM-INFO-ACCEPT} . 75
6.3.6.21 {MM-INFO-REJECT} . 75
6.3.6.22 {MM-INFO-REQUEST} . 76
6.3.6.23 {MM-INFO-SUGGEST} . 76
6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN} . 77
6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK} . 78
6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ} . 78
6.3.6.27 {MM-IWU} . 79
6.3.6.28 {MM-NOTIFY} . 79
6.3.7 LCE-messages . 80
6.3.7.1 {LCE-PAGE-RESPONSE} . 80
6.3.7.2 {LCE-PAGE-REJECT} . 80
6.4 B-FORMAT message functional contents . 80
6.4.1 B-FORMAT message overview . 80
6.4.2 {LCE-REQUEST-PAGE} . 81
6.4.3 {CLMS-FIXED}. 81
7 S-FORMAT message structures . 82
7.1 Overview . 82
7.2 Protocol Discrimination (PD) element . 82
7.3 Transaction Identifier (TI) element . 83
7.4 Message type element . 84
7.4.0 General . 84
7.4.1 Messages for CC . 84
7.4.2 Messages for SS . 84
7.4.3 Messages for COMS . 85
7.4.4 Messages for CLMS . 85
7.4.5 Messages for MM . 85
7.4.6 Messages for LCE . 86
7.5 Other information elements . 86
7.5.1 Coding rules . 86
7.5.2 Extensions of codesets . 88
7.5.3 Locking shift procedure . 88
7.5.4 Non-locking shift procedure . 89
7.5.5 Display and keypad elements. 89
7.5.6 Repeated elements . 90
7.6 Fixed length information elements . 90
7.6.1 Summary . 90
7.6.2 Sending complete, delimiter request and use TPUI . 90
7.6.3 Repeat indicator . 91
7.6.4 Basic service . 91
7.6.5 Single display. 92
7.6.6 Single keypad . 93
7.6.7 Release reason . 93
7.6.8 Signal . 94
7.6.9 Timer restart. 95
7.6.10 Test hook control . 95
7.7 Variable length information elements . 96
7.7.1 Summary . 96
7.7.2 Allocation type . 97
7.7.3 Alphanumeric . 98
ETSI
6 ETSI EN 300 175-5 V2.6.1 (2015-07)
7.7.4 Auth type . 99
7.7.5 Call attributes . 100
7.7.6 Call identity . 104
7.7.7 Called party number. 105
7.7.8 Called party subaddress . 106
7.7.9 Calling party number . 106
7.7.10 Cipher info . 107
7.7.11 Connection attributes . 108
7.7.12 Connection identity . 112
7.7.13 Duration . 113
7.7.14 End-to-end compatibility . 113
7.7.15 Facility . 116
7.7.16 Feature activate . 117
7.7.17 Feature indicate . 119
7.7.18 Fixed identity . 121
7.7.19 Identity type . 122
7.7.20 Info type . 123
7.7.21 InterWorking Unit (IWU) attributes . 124
7.7.22 IWU packet . 128
7.7.23 IWU to IWU . 130
7.7.24 Key. 132
7.7.25 Location area . 132
7.7.26 Multi-display. 133
7.7.27 Multi-keypad. 133
7.7.28 NetWorK (NWK) assigned identity . 134
7.7.29 Network parameter . 135
7.7.30 Portable identity . 137
7.7.31 Progress indicator . 141
7.7.32 RAND . 142
7.7.33 Rate parameters . 142
7.7.34 Reject reason . 144
7.7.35 RES . 145
7.7.36 RS . 145
7.7.37 Segmented info . 146
7.7.38 Service change info . 146
7.7.39 Service class. 148
7.7.40 Setup capability . 148
7.7.41 Terminal capability . 149
7.7.42 Transit delay . 155
7.7.43 Window size . 156
7.7.44 ZAP field . 157
7.7.45 Escape to proprietary . 157
7.7.46 Model identifier . 158
7.7.47 MMS Generic Header . 159
7.7.48 MMS Object Header . 159
7.7.49 MMS Extended header . 159
7.7.50 Time-Date . 159
7.7.51 Ext h/o indicator . 161
7.7.52 Called party Name . 162
7.7.53 Calling party Name . 163
7.7.54 Codec List . 163
7.7.55 Events notification . 165
7.7.55.1 General structure . 165
7.7.55.2 Event types . 166
7.7.56 Call information . 170
7.7.57 List change details . 173
7.7.58 ULE MAC Configuration Info. 175
8 B-FORMAT message structures . 176
8.1 General . 176
8.2 LCE request paging messages . 176
8.2.0 General . 176
ETSI
7 ETSI EN 300 175-5 V2.6.1 (2015-07)
8.2.1 Short format message. 177
8.2.2 Full format message . 178
8.2.3 Long format message . 179
8.2.4 Message elements . 179
8.2.4.1 LCE paging header . 179
8.2.4.2 Info fields (Full format) . 181
8.2.4.3 Default setup behaviour . 182
8.2.4.4 Address elements in collective or group ringing . 183
8.3 CLMS-FIXED messages . 183
8.3.1 General message structure . 183
8.3.2 Message elements . 184
8.3.3 Standard message structures . 186
8.3.3.1 General . 186
8.3.3.2 Messages using 4-bit characters . 186
8.3.3.3 Messages using 8-bit characters . 186
9 Call Control (CC) procedures . 186
9.1 General . 186
9.2 Call Control (CC) states . 189
9.2.1 States at PT . 189
9.2.1.0 General . 189
9.2.1.1 State T-00: "NULL" . 189
9.2.1.2 State T-19: "RELEASE PENDING" . 189
9.2.1.3 State T-10: "ACTIVE" . 189
9.2.1.4 State T-01: "CALL INITIATED" . 189
9.2.1.5 State T-02: "OVERLAP SENDING" . 189
9.2.1.6 State T-03: "CALL PROCEEDING" . 189
9.2.1.7 State T-04: "CALL DELIVERED" . 189
9.2.1.8 State T-06: "CALL PRESENT" . 1
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer35.100.30Omrežni slojNetwork layer33.070.30'(&7Digital Enhanced Cordless Telecommunications (DECT)ICS:Ta slovenski standard je istoveten z:EN 300 175-5 V2.6.1SIST EN 300 175-5 V2.6.1:2015en,fr,de01-november-2015SIST EN 300 175-5 V2.6.1:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 2
Reference REN/DECT-000304-5 Keywords DECT, IMT-2000, mobility, radio, TDD, TDMA ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone]
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Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 2015. All rights reserved.
DECTTM, PLUGTESTSTM, UMTSTM and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE™ are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM® and the GSM logo are Trade Marks registered and owned by the GSM Association. SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 3 Contents Intellectual Property Rights . 16 Foreword . 16 Modal verbs terminology . 16 1 Scope . 17 2 References . 17 2.1 Normative references . 17 2.2 Informative references . 22 3 Definitions, symbols and abbreviations . 23 3.1 Definitions . 23 3.2 Symbols and abbreviations . 23 4 Overview of the NWK layer . 27 5 Overview of procedures . 29 5.1 General . 29 5.2 Overview of Call Control (CC) . 29 5.2.1 General . 29 5.2.2 Call establishment . 30 5.2.2.1 Call setup . 30 5.2.2.2 Service negotiation . 30 5.2.3 Call connect . 30 5.2.4 Call information . 31 5.2.5 Service change . 31 5.2.6 Call release. 31 5.3 Overview of Supplementary Services (SS) . 31 5.3.1 General . 31 5.3.2 Keypad protocol . 32 5.3.3 Feature key management protocol . 32 5.3.4 Functional protocol . 32 5.4 Overview of Connection Oriented Message Service (COMS) . 33 5.4.1 General . 33 5.4.2 COMS establishment . 33 5.4.3 Service negotiation . 33 5.4.4 COMS connect . 33 5.4.5 COMS data transfer . 33 5.4.6 COMS suspend and resume . 34 5.4.7 COMS release . 34 5.5 Overview of ConnectionLess Message Service (CLMS) . 34 5.5.0 General . 34 5.5.1 Fixed length message service. 34 5.5.2 Variable length message service . 34 5.6 Overview of Mobility Management (MM) . 35 5.6.1 General . 35 5.6.2 Identity procedures . 35 5.6.3 Authentication procedures . 35 5.6.4 Location procedures . 36 5.6.5 Access rights procedures . 36 5.6.6 Key allocation procedure . 37 5.6.7 Parameter retrieval procedure . 37 5.6.8 Ciphering related procedure . 37 5.6.9 External protocol information procedure . 37 5.7 Overview of Link Control Entity (LCE) . 37 5.7.1 General . 37 5.7.2 Data Link Endpoint Identifier (DLEI) . 38 5.7.3 Data link establishment . 38 5.7.4 Data link re-establishment . 38 SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 4 5.7.5 Data link release . 39 5.7.6 Data link suspend and resume. 39 5.7.7 Queuing of messages . 39 5.7.8 Request paging . 39 6 Message functional definitions . 40 6.1 Overview of message structures . 40 6.1.1 Messages . 40 6.1.2 Information elements . 40 6.2 Message summaries . 41 6.2.1 Summary of CC messages . 41 6.2.2 Summary of CISS messages . 41 6.2.3 Summary of COMS messages . 41 6.2.4 Summary of CLMS messages . 42 6.2.5 Summary of MM messages . 42 6.2.6 Summary of LCE messages . 42 6.3 S-FORMAT message functional contents . 43 6.3.1 S-FORMAT message overview . 43 6.3.2 CC-messages. 43 6.3.2.1 {CC-SETUP} . 43 6.3.2.2 {CC-INFO} . 45 6.3.2.3 {CC-SETUP-ACK} . 46 6.3.2.4 {CC-CALL-PROC} . 47 6.3.2.5 {CC-ALERTING} . 48 6.3.2.6 {CC-CONNECT} . 49 6.3.2.7 {CC-CONNECT-ACK} . 50 6.3.2.8 {CC-RELEASE} . 50 6.3.2.9 {CC-RELEASE-COM} . 51 6.3.2.10 {CC-SERVICE-CHANGE} . 52 6.3.2.11 {CC-SERVICE-ACCEPT} . 53 6.3.2.12 {CC-SERVICE-REJECT} . 53 6.3.2.13 {CC-NOTIFY}. 54 6.3.2.14 {IWU-INFO} . 54 6.3.3 SS-messages (call related and call independent) . 55 6.3.3.1 {FACILITY} . 55 6.3.3.2 {HOLD} . 56 6.3.3.3 {HOLD-ACK} . 56 6.3.3.4 {HOLD-REJECT} . 57 6.3.3.5 {RETRIEVE} . 57 6.3.3.6 {RETRIEVE-ACK} . 58 6.3.3.7 {RETRIEVE-REJECT} . 58 6.3.3.8 {CISS-REGISTER} . 59 6.3.3.9 {CISS-RELEASE-COM} . 60 6.3.4 COMS-messages . 60 6.3.4.1 {COMS-SETUP} . 60 6.3.4.2 {COMS-INFO} . 61 6.3.4.3 {COMS-ACK} . 61 6.3.4.4 {COMS-CONNECT} . 62 6.3.4.5 {COMS-RELEASE} . 62 6.3.4.6 {COMS-RELEASE-COM} . 63 6.3.4.7 {COMS-NOTIFY}. 63 6.3.5 CLMS-message . 64 6.3.5.1 {CLMS-VARIABLE} . 64 6.3.6 MM-messages . 65 6.3.6.1 {ACCESS-RIGHTS-ACCEPT} . 65 6.3.6.2 {ACCESS-RIGHTS-REJECT} . 65 6.3.6.3 {ACCESS-RIGHTS-REQUEST} . 66 6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT} . 66 6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT} . 67 6.3.6.6 {ACCESS-RIGHTS-TERMINATE-REQUEST} . 67 6.3.6.7 {AUTHENTICATION-REJECT} . 68 6.3.6.8 {AUTHENTICATION-REPLY} . 68 SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 5 6.3.6.9 {AUTHENTICATION-REQUEST} . 69 6.3.6.10 {CIPHER-REJECT} . 70 6.3.6.11 {CIPHER-REQUEST} . 70 6.3.6.12 {CIPHER-SUGGEST} . 71 6.3.6.13 {DETACH} . 71 6.3.6.14 {IDENTITY-REPLY} . 72 6.3.6.15 {IDENTITY-REQUEST} . 72 6.3.6.16 {KEY-ALLOCATE} . 73 6.3.6.17 {LOCATE-ACCEPT} . 73 6.3.6.18 {LOCATE-REJECT} . 74 6.3.6.19 {LOCATE-REQUEST} . 74 6.3.6.20 {MM-INFO-ACCEPT} . 75 6.3.6.21 {MM-INFO-REJECT} . 75 6.3.6.22 {MM-INFO-REQUEST} . 76 6.3.6.23 {MM-INFO-SUGGEST} . 76 6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN} . 77 6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK} . 78 6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ} . 78 6.3.6.27 {MM-IWU} . 79 6.3.6.28 {MM-NOTIFY} . 79 6.3.7 LCE-messages . 80 6.3.7.1 {LCE-PAGE-RESPONSE} . 80 6.3.7.2 {LCE-PAGE-REJECT} . 80 6.4 B-FORMAT message functional contents . 80 6.4.1 B-FORMAT message overview . 80 6.4.2 {LCE-REQUEST-PAGE} . 81 6.4.3 {CLMS-FIXED}. 81 7 S-FORMAT message structures . 82 7.1 Overview . 82 7.2 Protocol Discrimination (PD) element . 82 7.3 Transaction Identifier (TI) element . 83 7.4 Message type element . 84 7.4.0 General . 84 7.4.1 Messages for CC . 84 7.4.2 Messages for SS . 84 7.4.3 Messages for COMS . 85 7.4.4 Messages for CLMS . 85 7.4.5 Messages for MM . 85 7.4.6 Messages for LCE . 86 7.5 Other information elements . 86 7.5.1 Coding rules . 86 7.5.2 Extensions of codesets . 88 7.5.3 Locking shift procedure . 88 7.5.4 Non-locking shift procedure . 89 7.5.5 Display and keypad elements. 89 7.5.6 Repeated elements . 90 7.6 Fixed length information elements . 90 7.6.1 Summary . 90 7.6.2 Sending complete, delimiter request and use TPUI . 90 7.6.3 Repeat indicator . 91 7.6.4 Basic service . 91 7.6.5 Single display. 92 7.6.6 Single keypad . 93 7.6.7 Release reason . 93 7.6.8 Signal . 94 7.6.9 Timer restart. 95 7.6.10 Test hook control . 95 7.7 Variable length information elements . 96 7.7.1 Summary . 96 7.7.2 Allocation type . 97 7.7.3 Alphanumeric . 98 SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 6 7.7.4 Auth type . 99 7.7.5 Call attributes . 100 7.7.6 Call identity . 104 7.7.7 Called party number. 105 7.7.8 Called party subaddress . 106 7.7.9 Calling party number . 106 7.7.10 Cipher info . 107 7.7.11 Connection attributes . 108 7.7.12 Connection identity . 112 7.7.13 Duration . 113 7.7.14 End-to-end compatibility . 113 7.7.15 Facility . 116 7.7.16 Feature activate . 117 7.7.17 Feature indicate . 119 7.7.18 Fixed identity . 121 7.7.19 Identity type . 122 7.7.20 Info type . 123 7.7.21 InterWorking Unit (IWU) attributes . 124 7.7.22 IWU packet . 128 7.7.23 IWU to IWU . 130 7.7.24 Key. 132 7.7.25 Location area . 132 7.7.26 Multi-display. 133 7.7.27 Multi-keypad. 133 7.7.28 NetWorK (NWK) assigned identity . 134 7.7.29 Network parameter . 135 7.7.30 Portable identity . 137 7.7.31 Progress indicator . 141 7.7.32 RAND . 142 7.7.33 Rate parameters . 142 7.7.34 Reject reason . 144 7.7.35 RES . 145 7.7.36 RS . 145 7.7.37 Segmented info . 146 7.7.38 Service change info . 146 7.7.39 Service class. 148 7.7.40 Setup capability . 148 7.7.41 Terminal capability . 149 7.7.42 Transit delay . 155 7.7.43 Window size . 156 7.7.44 ZAP field . 157 7.7.45 Escape to proprietary . 157 7.7.46 Model identifier . 158 7.7.47 MMS Generic Header . 159 7.7.48 MMS Object Header . 159 7.7.49 MMS Extended header . 159 7.7.50 Time-Date . 159 7.7.51 Ext h/o indicator . 161 7.7.52 Called party Name . 162 7.7.53 Calling party Name . 163 7.7.54 Codec List . 163 7.7.55 Events notification . 165 7.7.55.1 General structure . 165 7.7.55.2 Event types . 166 7.7.56 Call information . 170 7.7.57 List change details . 173 7.7.58 ULE MAC Configuration Info. 175 8 B-FORMAT message structures . 176 8.1 General . 176 8.2 LCE request paging messages . 176 8.2.0 General . 176 SIST EN 300 175-5 V2.6.1:2015

ETSI ETSI EN 300 175-5 V2.6.1 (2015-07) 7 8.2.1 Short format message. 177 8.2.2 Full format message . 178 8.2.3 Long format message . 179 8.2.4 Message elements . 179 8.2.4.1 LCE paging header . 179 8.2.4.2 Info fields (Full format) . 181 8.2.4.3 Default setup behaviour . 182 8.2.4.4 Address elements in collective or group ringing . 183 8.3 CLMS-FIXED messages . 183 8.3.1 General message structure . 183 8.3.2 Message elements . 184 8.3.3 Standard message structures . 186 8.3.3.1 General . 186 8.3.3.2 Messages using 4-bit characters . 186 8.3.3.3 Messages using 8-bit characters . 186 9 Call Control (CC) procedures . 186 9.1 General . 186 9.2 Call Control (CC) states . 189 9.2.1 States at PT . 189 9.2.1.0 General . 189 9.2.1.1 State T-00: "NULL" . 189 9.2.1.2 State T-19: "RELEASE PENDING" . 189 9.2.1.3 State T-10: "ACTIVE" . 189 9.2.1.4 State T-01: "CALL INITIATED" . 189 9.2.1.5 State T-02: "OVERLAP SENDING" . 189 9.2.1.6 State T-03: "CALL PROCEEDING" . 189 9.2.1.7 State T-04: "CALL DELIVERED" . 189 9.2.1.8 State T-06: "CALL PRESENT" .
...