SIST ETS 300 175-5:1999

• Abstract:

  To update ETS 300 175, annex H, clause H.1 and subclause H.3.1 .

• Status: Published
• Publication Date: 31-Oct-1999
• ICS: 33.070.30 - Digital Enhanced Cordless Telecommunications (DECT)
• ICS: 35.100.30 - Network layer
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-1999
• Due Date: 01-Nov-1999
• Completion Date: 01-Nov-1999
• Ref Project: ETSI ETS 300 175-5 ed.3 (1997-12) - Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5: Network (NWK) layer

SIST ETS 300 175-5:1999 is the Slovenian adoption of ETS 300 175-5 Edition 3 from ETSI for Digital Enhanced Cordless Telecommunications (DECT) Common Interface (CI). It specifies the DECT Network (NWK) layer, specifically the control plane (C-plane) for portable and fixed terminations, and defines the signalling procedures, message formats and primitives used to set up, control and release DECT services.

SIST ETS 300 175-5:1999 covers signalling only at the DECT NWK layer. The user plane (U-plane) is null at this layer, so the document is about control, mobility and messaging behavior rather than user payload transport.

What does SIST ETS 300 175-5:1999 specify?

SIST ETS 300 175-5:1999 specifies Part 5 of the DECT CI standard: the NWK layer as layer 3 of the DECT protocol stack. The scope states that it updates ETS 300 175, Annex H, clause H.1 and subclause H.3.1.

The document is organized around the main NWK entities and their procedures. Clauses 4 to 17 cover the overview, message definitions, message structures, procedures for CC, SS, COMS, CLMS, MM and LCE, management procedures, primitives, and error handling.

Annex	What it covers
Annex A	Timers, NWK layer constants and restart
Annex B	CC state transitions at PT and FT side
Annex D	DECT standard 8-bit characters and DECT standard 4-bit characters
Annex F	Broadcast attributes coding, including Higher Layer Capabilities and Extended Higher Layer Capabilities
Annex G	Sending and rejection rules for <> and <> elements
Annex H	Nested and stand alone procedures, including location update, temporary identity assignment, PT initiated cipher switching and key allocation

What are the key requirements of SIST ETS 300 175-5:1999?

SIST ETS 300 175-5:1999 defines how DECT devices exchange C-plane signalling, encode messages, and run the main control procedures that support calls, messaging, mobility and security. In practice, implementers use it to make sure PT, FT and associated network functions interpret the same message formats and state changes.

The NWK layer is split into named entities

Clause 4 defines the main NWK functions: LCE, CC, CISS, COMS, CLMS and MM. Each entity has a distinct job, such as call handling, message transfer, identity management or link control, so the standard keeps the protocol stack modular and easier to implement.

Message coding is tightly structured

Clauses 6, 7 and 8 define S-FORMAT and B-FORMAT messages, including Protocol Discrimination (PD), Transaction Identifier (TI), message type and information elements. The coding rules cover fixed-length and variable-length elements, codeset shifts, repeated elements and segmented information, which matters because receivers must parse messages exactly the same way to avoid rejects and interop failures.

Call Control (CC) uses explicit states and procedures

Clause 9 defines CC states for PT and FT, including call initiation, call proceeding, call present, active and release pending. It also covers outgoing and incoming call establishment, call information, call release, service change and packet mode access, so vendors can implement predictable call setup, rerouting, suspension and release behavior.

Supplementary Services (SS) can be carried in different ways

Clause 10 covers keypad protocol, feature key management protocol and functional protocol, including both separate-message and common-information-element approaches. It also addresses co-existence of multiple protocols and DECT standard and DECT specific supplementary services such as queue management, subscriber number indication, echo control functions and cost information.

COMS and CLMS provide message transfer services

Clause 11 defines COMS for connection-oriented message transfer, with PT and FT states, establishment, data transfer, suspend/resume and release. Clause 12 defines CLMS for connectionless transfer, including fixed-length and variable-length message handling; in practice, this is the part that tells implementations how to move non-call signalling or data messages over DECT.

MM covers identity, authentication, location and keys

Clause 13 defines MM procedures for identification, temporary identity assignment, authentication of PT, user and FT, location registration, detach, location update, access rights, key allocation, parameter retrieval and ciphering related functions. This is the security and mobility core of the standard: it tells implementations how to recognise devices, verify access and update the network about movement.

LCE and management procedures control links and service setup

Clause 14 defines LCE procedures for connection oriented and connectionless link control, message routing, broadcast announce and collective or group ringing. Clause 15 covers LLME functions, service mapping and negotiation, resource management, MM management, call ciphering management, external handover and test management.

Error handling and timing are part of interoperability

Clause 17 orders the handling of protocol discrimination errors, short messages, TI errors, message type and sequence errors, information element errors, data link reset and data link failure. Annex A provides timers and constants, which matters because interoperable DECT systems need the same timeout behavior and the same reaction to malformed or incomplete signalling.

What terms does SIST ETS 300 175-5:1999 define?

• Network (NWK) layer - The DECT layer 3 protocol that carries signalling between the radio terminations and is split into the C-plane and U-plane, with this part focusing on the C-plane.
• Control plane (C-plane) - The signalling side of the NWK layer, carrying internal control information for call, mobility and link procedures.
• User plane (U-plane) - The user information side of the NWK layer; this part states that the U-plane is null for all services at the DECT NWK layer.
• Portable termination (PT) - The portable side of the DECT system that participates in call control, messaging and mobility procedures.
• Fixed termination (FT) - The fixed side of the DECT system that interacts with the PT for calls, paging, link control and mobility functions.
• Call Control (CC) - The NWK entity that establishes, maintains and releases circuit switched calls.
• Connection Oriented Message Service (COMS) - The NWK entity for messages that use an established connection and support data transfer, suspend/resume and release.
• Mobility Management (MM) - The NWK entity that handles identities, authentication, location updating, on-air subscription and key allocation.
• Link Control Entity (LCE) - The NWK entity that establishes, maintains, suspends, resumes and releases the C-plane link between FT and active PTs.

Who uses SIST ETS 300 175-5:1999?

SIST ETS 300 175-5:1999 is used by DECT equipment designers, protocol engineers, firmware developers and interoperability test teams. They use it when implementing the NWK layer message formats, CC and MM behavior, paging, supplementary services, and the link procedures between PT and FT.

It is also relevant to quality managers, validation labs and buyers who need DECT products to follow the same signalling rules. In practice, they use it to check whether a handset, base station or test tool handles call setup, authentication, location update, release and error cases in the way DECT expects.

What changed in SIST ETS 300 175-5:1999 from the previous edition?

SIST ETS 300 175-5:1999 is identified as ETS 300 175-5 Edition 3. The scope states that this edition updates ETS 300 175, Annex H, clause H.1 and subclause H.3.1.

Which standards are used with SIST ETS 300 175-5:1999?

• ETS 300 175-1 - Provides the DECT Common Interface overview.
• ETS 300 175-2 - Provides the Physical layer (PHL).
• ETS 300 175-3 - Provides the MAC layer and is referenced for bearer use and packet-lifetime behavior.
• ETS 300 175-4 - Provides details for U-plane link number coding.
• ETS 300 175-6 - Provides coding for identities and access rights identities used in multiple information elements.
• ETS 300 175-8 - Provides the definitions behind TCL, PP Adaptive VOLume and PP ambient Noise REJection parameters.
• ETS 300 102-1 - Provides the principles for variable length information element coding.
• ETS 300 133 - Provides ERMES 7-bit characters used in character coding.
• ETS 300 286-1 - Provides LAP.B, cited for protocol coding.
• ETS 300 757 and ETS 300 755 - Are referenced in the broadcast and higher-layer capability material.
• CCITT Recommendation V.110 and CCITT Recommendation X.30 - Are used in end-to-end compatibility and rate adaptation coding.
• CCITT Recommendation Q.931, CCITT Recommendation X.25, CCITT Recommendation T.50, ISO Publication 2022, ISO Publication 1745, ISO Publication 8802-2, ISO Publication 8348 and ANSI X 3.4-1986 - Are used in message, character set, or protocol coding descriptions.

What does the SIST ETS 300 175-5:1999 document contain?

SIST ETS 300 175-5:1999 contains message summaries, message functional definitions, coding rules for information elements, state machines and procedure descriptions. It also contains detailed coding tables for many information elements such as call attributes, called and calling party numbers, cipher info, connection attributes, IWU-ATTRIBUTES, portable and network-assigned identities, progress indicator, rate parameters, reject reason, segmented info, service change info, terminal capability and more.

The document also includes procedure tables and examples for CC state transitions, DECT character coding, broadcast attributes, IWU-PACKET and IWU-TO-IWU handling, and annex material for timers, constants and restart. For implementers, these parts are the practical reference for building parsers, state machines, test cases and conformance checks.

SLOVENSKI STANDARD
01-november-1999
'LJLWDOQHL]EROMãDQHEUH]YUYLþQHWHOHNRPXQLNDFLMH'(&76NXSQLYPHVQLN&,
GHO2PUHåQDSODVW1:.
Digital Enhanced Cordless Telecommunications (DECT); Common Interface (CI); Part 5:
Network (NWK) layer
Ta slovenski standard je istoveten z: ETS 300 175-5 Edition 3
ICS:
33.070.30 'LJLWDOQHL]EROMãDQH Digital Enhanced Cordless
EUH]YUYLþQHWHOHNRPXQLNDFLMH Telecommunications (DECT)
'(&7
35.100.30 Omrežni sloj Network layer
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 175-5
TELECOMMUNICATION December 1997
STANDARD Third Edition
Source: DECT Reference: RE/DECT-030122-5
ICS: 33.020
Key words: DECT, radio
Digital Enhanced Cordless Telecommunications (DECT);
Common Interface (CI);
Part 5: Network (NWK) layer
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

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ETS 300 175-5: December 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

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ETS 300 175-5: December 1997
Contents
Foreword .13
Amendments in this edition .13
1 Scope .15
2 Normative references.15
3 Definitions and abbreviations .19
3.1 Definitions .19
3.2 Abbreviations .21
4 Overview of the NWK layer .23
5 Overview of procedures .25
5.1 General .25
5.2 Overview of Call Control (CC).25
5.2.1 General.25
5.2.2 Call establishment.26
5.2.2.1 Call set-up.26
5.2.2.2 Service negotiation .26
5.2.3 Call connect.27
5.2.4 Call information .27
5.2.5 Service change.27
5.2.6 Call release .27
5.3 Overview of Supplementary Services (SS).28
5.3.1 General.28
5.3.2 Keypad protocol.28
5.3.3 Feature key management protocol .29
5.3.4 Functional protocol .29
5.4 Overview of Connection Oriented Message Service (COMS) .29
5.4.1 General.29
5.4.2 COMS establishment .30
5.4.3 Service negotiation.30
5.4.4 COMS connect.30
5.4.5 COMS data transfer .30
5.4.6 COMS suspend and resume.31
5.4.7 COMS release.31
5.5 Overview of Connectionless Message Service (CLMS) .31
5.5.1 Fixed length message service.31
5.5.2 Variable length message service .31
5.6 Overview of Mobility Management (MM) .32
5.6.1 General.32
5.6.2 Identity procedures.32
5.6.3 Authentication procedures.33
5.6.4 Location procedures.33
5.6.5 Access rights procedures.33
5.6.6 Key allocation procedure.34
5.6.7 Parameter retrieval procedure.34
5.6.8 Ciphering related procedure.34
5.7 Overview of Link Control Entity (LCE) .34
5.7.1 General.34
5.7.2 Data Link Endpoint Identifier (DLEI).35
5.7.3 Data link establishment .35
5.7.4 Data link re-establishment.36
5.7.5 Data link release.36
5.7.6 Data link suspend and resume.36

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ETS 300 175-5: December 1997
5.7.7 Queuing of messages. 36
5.7.8 Request paging. 36
6 Message functional definitions. 37
6.1 Overview of message structures. 37
6.1.1 Messages . 37
6.1.2 Information elements . 37
6.2 Message summaries. 38
6.2.1 Summary of CC messages. 38
6.2.2 Summary of CISS messages . 38
6.2.3 Summary of COMS messages. 38
6.2.4 Summary of CLMS messages. 39
6.2.5 Summary of MM messages. 39
6.2.6 Summary of LCE messages. 40
6.3 S-FORMAT message functional contents. 40
6.3.1 S-FORMAT message overview . 40
6.3.2 CC-messages. 41
6.3.2.1 {CC-SETUP} . 41
6.3.2.2 {CC-INFO}. 43
6.3.2.3 {CC-SETUP-ACK}. 44
6.3.2.4 {CC-CALL-PROC}. 45
6.3.2.5 {CC-ALERTING} . 46
6.3.2.6 {CC-CONNECT} . 47
6.3.2.7 {CC-CONNECT-ACK}. 48
6.3.2.8 {CC-RELEASE}. 48
6.3.2.9 {CC-RELEASE-COM} . 49
6.3.2.10 {CC-SERVICE-CHANGE}. 50
6.3.2.11 {CC-SERVICE-ACCEPT}. 50
6.3.2.12 {CC-SERVICE-REJECT} . 51
6.3.2.13 {CC-NOTIFY} . 51
6.3.2.14 {IWU-INFO}. 52
6.3.3 SS-messages (call related and call independent) . 53
6.3.3.1 {FACILITY}. 53
6.3.3.2 {HOLD} . 53
6.3.3.3 {HOLD-ACK}. 54
6.3.3.4 {HOLD-REJECT} . 54
6.3.3.5 {RETRIEVE}. 55
6.3.3.6 {RETRIEVE-ACK}. 55
6.3.3.7 {RETRIEVE-REJECT} . 56
6.3.3.8 {CISS-REGISTER}. 56
6.3.3.9 {CISS-RELEASE-COM}. 57
6.3.4 COMS-messages . 57
6.3.4.1 {COMS-SETUP}. 57
6.3.4.2 {COMS-INFO}. 58
6.3.4.3 {COMS-ACK} . 58
6.3.4.4 {COMS-CONNECT}. 59
6.3.4.5 {COMS-RELEASE} . 59
6.3.4.6 {COMS-RELEASE-COM} . 60
6.3.4.7 {COMS-NOTIFY} . 60
6.3.5 CLMS-message. 61
6.3.5.1 {CLMS-VARIABLE}. 61
6.3.6 MM-messages. 62
6.3.6.1 {ACCESS-RIGHTS-ACCEPT} . 62
6.3.6.2 {ACCESS-RIGHTS-REJECT}. 62
6.3.6.3 {ACCESS-RIGHTS-REQUEST} . 63
6.3.6.4 {ACCESS-RIGHTS-TERMINATE-ACCEPT}. 63
6.3.6.5 {ACCESS-RIGHTS-TERMINATE-REJECT}. 64
6.3.6.6 {ACCESS-RIGHTS-TERMINATE-REQUEST} . 64
6.3.6.7 {AUTHENTICATION-REJECT}. 65
6.3.6.8 {AUTHENTICATION-REPLY}. 65
6.3.6.9 {AUTHENTICATION-REQUEST} . 66
6.3.6.10 {CIPHER-REJECT}. 66
6.3.6.11 {CIPHER-REQUEST} . 67

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ETS 300 175-5: December 1997
6.3.6.12 {CIPHER-SUGGEST}.67
6.3.6.13 {DETACH} .68
6.3.6.14 {IDENTITY-REPLY}.68
6.3.6.15 {IDENTITY-REQUEST} .69
6.3.6.16 {KEY-ALLOCATE} .69
6.3.6.17 {LOCATE-ACCEPT}.70
6.3.6.18 {LOCATE-REJECT}.70
6.3.6.19 {LOCATE-REQUEST} .71
6.3.6.20 {MM-INFO-ACCEPT}.71
6.3.6.21 {MM-INFO-REJECT} .72
6.3.6.22 {MM-INFO-REQUEST}.72
6.3.6.23 {MM-INFO-SUGGEST}.73
6.3.6.24 {TEMPORARY-IDENTITY-ASSIGN}.73
6.3.6.25 {TEMPORARY-IDENTITY-ASSIGN-ACK} .74
6.3.6.26 {TEMPORARY-IDENTITY-ASSIGN-REJ}.74
6.3.7 LCE-messages.75
6.3.7.1 {LCE-PAGE-RESPONSE}.75
6.3.7.2 {LCE-PAGE-REJECT}.75
6.4 B-FORMAT message functional contents .76
6.4.1 B-FORMAT message overview.76
6.4.2 {LCE-REQUEST-PAGE} .76
6.4.3 {CLMS-FIXED} .77
7 S-FORMAT message structures.77
7.1 Overview .77
7.2 Protocol Discrimination (PD) element.78
7.3 Transaction Identifier (TI) element.79
7.4 Message type element.80
7.4.1 Messages for CC.80
7.4.2 Messages for SS.80
7.4.3 Messages for COMS.81
7.4.4 Messages for CLMS.81
7.4.5 Messages for MM.81
7.4.6 Messages for LCE.82
7.5 Other information elements .82
7.5.1 Coding rules .82
7.5.2 Extensions of codesets .84
7.5.3 Locking shift procedure .85
7.5.4 Non-locking shift procedure .85
7.5.5 Display and keypad elements.86
7.5.6 Repeated elements .86
7.6 Fixed length information elements.87
7.6.1 Summary.87
7.6.2 Sending complete and delimiter request.87
7.6.3 Repeat indicator .88
7.6.4 Basic service .88
7.6.5 Single display .89
7.6.6 Single keypad.89
7.6.7 Release reason .89
7.6.8 Signal.90
7.6.9 Timer restart.91
7.6.10 Test hook control.92
7.7 Variable length information elements .92
7.7.1 Summary.92
7.7.2 Allocation type .94
7.7.3 Alphanumeric .95
7.7.4 Auth type .96
7.7.5 Call attributes .97
7.7.6 Call identity .99
7.7.7 Called party number .100
7.7.8 Called party subaddress.101
7.7.9 Calling party number .101
7.7.10 Cipher info .103

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ETS 300 175-5: December 1997
7.7.11 Connection attributes. 104
7.7.12 Connection identity . 106
7.7.13 Duration . 107
7.7.14 End-to-end compatibility . 107
7.7.15 Facility. 110
7.7.16 Feature activate . 111
7.7.17 Feature indicate . 113
7.7.18 Fixed identity. 115
7.7.19 Identity type. 116
7.7.20 Info type . 117
7.7.21 Interworking Unit (IWU) attributes . 118
7.7.22 IWU packet. 123
7.7.23 IWU to IWU . 124
7.7.24 Key. 125
7.7.25 Location area . 126
7.7.26 Multi-display. 127
7.7.27 Multi-keypad. 127
7.7.28 Network (NWK) assigned identity. 127
7.7.29 Network parameter . 128
7.7.30 Portable identity . 129
7.7.31 Progress indicator. 132
7.7.32 Rand . 133
7.7.33 Rate parameters. 134
7.7.34 Reject reason. 135
7.7.35 RES . 136
7.7.36 RS. 136
7.7.37 Segmented info. 137
7.7.38 Service change info . 137
7.7.39 Service class. 139
7.7.40 Set-up capability . 139
7.7.41 Terminal capability. 140
7.7.42 Transit delay . 143
7.7.43 Window size. 144
7.7.44 ZAP field . 144
7.7.45 Escape to proprietary. 145
7.7.46 Model identifier . 145
7.7.47 MMS Generic Header. 146
7.7.48 MMS Object Header . 146
7.7.49 MMS Extended header . 146
7.7.50 Time-Date. 146
7.7.51 Ext h/o indicator . 148
8 B-FORMAT message structures . 148
8.1 General. 148
8.2 LCE request paging messages. 149
8.2.1 Short format message . 150
8.2.2 Long format message. 152
8.3 CLMS-FIXED messages. 154
8.3.1 General message structure . 154
8.3.2 Message elements. 155
8.3.3 Standard message structures. 156
8.3.3.1 General . 156
8.3.3.2 Messages using 4-bit characters . 156
8.3.3.3 Messages using 8-bit characters . 156
9 Call Control (CC) procedures . 157
9.1 General. 157
9.2 Call Control (CC) states . 160
9.2.1 States at PT. 160
9.2.1.1 State T-00: "NULL". 160
9.2.1.2 State T-19: "RELEASE PENDING". 160
9.2.1.3 State T-10: "ACTIVE". 160
9.2.1.4 State T-01: "CALL INITIATED" . 160

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ETS 300 175-5: December 1997
9.2.1.5 State T-02: "OVERLAP SENDING".160
9.2.1.6 State T-03: "CALL PROCEEDING" .160
9.2.1.7 State T-04: "CALL DELIVERED".160
9.2.1.8 State T-06: "CALL PRESENT" .160
9.2.1.9 State T-07: "CALL RECEIVED".160
9.2.1.10 State T-08: "CONNECT PENDING" .160
9.2.2 States at FT.160
9.2.2.1 State F-00: "NULL" .160
9.2.2.2 State F-19: "RELEASE PENDING" .161
9.2.2.3 State F-10: "ACTIVE" .161
9.2.2.4 State F-01: "CALL-INITIATED".161
9.2.2.5 State F-02: "OVERLAP SENDING".161
9.2.2.6 State F-03: "CALL PROCEEDING" .161
9.2.2.7 State F-04: "CALL DELIVERED" .161
9.2.2.8 State F-06: "CALL PRESENT" .161
9.2.2.9 State F-07: "CALL RECEIVED" .161
9.2.3 Optional states (PT and FT).162
9.2.3.1 States T-22 and F-22: "OVERLAP RECEIVING" .162
9.2.3.2 States T-23 and F-23: "INCOMING CALL PROCEEDING"162
9.3 Call establishment procedures .162
9.3.1 PT initiated call establishment (outgoing call) .162
9.3.1.1 Call request.162
9.3.1.2 Call accept or reject.163
9.3.1.3 Selection of lower layer resources.164
9.3.1.4 Connection of U-plane.165
9.3.1.5 Overlap sending.165
9.3.1.6 Call proceeding.166
9.3.1.7 Call confirmation.166
9.3.1.8 Call connection .166
9.3.1.9 Expiry of timer .167
9.3.2 FT initiated call establishment (incoming call).167
9.3.2.1 Call request.167
9.3.2.2 Call accept or reject.167
9.3.2.3 Selection of lower layer resources.168
9.3.2.4 Connection of U-plane.169
9.3.2.5 Overlap receiving.169
9.3.2.6 Call proceeding.169
9.3.2.7 Call confirmation.169
9.3.2.8 Call connection .169
9.3.2.9 Sending of <>.170
9.3.2.10 Expiry of timer .170
9.4 Call information procedures.170
9.5 Call release procedures.170
9.5.1 Normal call release.170
9.5.2 Abnormal call release.171
9.5.3 Release collisions.171
9.6 Service change procedures .172
9.6.1 General.172
9.6.2 Bandwidth changes (including reversals).172
9.6.3 Service rerouting .173
9.6.4 Service suspension and resumption .173
9.7 Packet mode procedures.173
9.7.1 General.173
9.7.2 PT initiated access .174
9.7.3 FT initiated access .174
9.7.4 Packet mode suspend and resume.175
9.7.4.1 General.175
9.7.4.2 C-plane suspend and resume .175
9.7.4.3 U-plane suspend and resume .175
10 Supplementary Services procedures .176
10.1 General .176
10.2 Keypad protocol .176

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ETS 300 175-5: December 1997
10.3 Feature key management protocol . 177
10.4 Functional protocol. 177
10.4.1 Separate messages approach. 177
10.4.1.1 Hold procedures. 178
10.4.1.2 Retrieve procedures. 178
10.4.1.3 Auxiliary states for hold and retrieve. 178
10.4.2 Common information element approach . 179
10.4.2.1 Call related procedures. 179
10.4.2.2 Call independent procedures . 179
10.4.2.3. Connectionless Supplementary Service (CLSS)
procedure. 179
10.5 Co-existence of multiple protocols . 180
10.6 Application protocols . 180
10.6.1 DECT standard functional supplementary services. 180
10.6.2 DECT specific supplementary services . 181
10.6.2.1 Queue management . 181
10.6.2.2 Indication of subscriber number. 182
10.6.2.3 Control of echo control functions . 182
10.6.2.4 Cost information. 183
11 Connection Oriented Message Service (COMS). 183
11.1 General. 183
11.2 COMS states. 183
11.2.1 States at PT. 183
11.2.1.1 State TS-0: "NULL" . 183
11.2.1.2 State TS-1: "CONNECT PENDING" . 183
11.2.1.3 State TS-2: "RELEASE PENDING" . 183
11.2.1.4 State TS-3: "ACTIVE" . 183
11.2.2 States at FT . 184
11.2.2.1 State FS-0: “NULL” . 184
11.2.2.2 State FS-1: "CONNECT PENDING" . 184
11.2.2.3 State FS-2: "RELEASE PENDING" . 184
11.2.2.4 State FS-3: "ACTIVE" . 184
11.3 COMS establishment procedures . 184
11.3.1 PT initiated COMS establishment. 184
11.3.1.1 COMS request . 184
11.3.1.2 COMS connection. 185
11.3.2 FT initiated COMS establishment. 185
11.3.2.1 COMS request . 185
11.3.2.2 COMS connection. 185
11.4 COMS data transfer procedures . 186
11.4.1 Procedure at the sending side. 186
11.4.2 Procedure at the receiving side . 186
11.5 COMS suspend and resume procedures. 187
11.6 COMS release procedures. 187
11.6.1 Normal COMS release. 187
11.6.2 Release collisions . 188
12 Connectionless Message Service (CLMS) . 188
12.1 General. 188
12.2 CLMS states. 188
12.3 CLMS message transmission procedures . 188
12.3.1 Fixed length messages. 188
12.3.1.1 Procedure in the Fixed radio Termination (FT). 188
12.3.1.2 Procedure in the Portable radio Termination (PT) . 189
12.3.2 Variable length messages . 189
12.3.2.1 Procedure at the sending side . 189
12.3.2.2 Procedure at the receiving side. 190
12.3.2.3 Restrictions for portable side initiated messages. 190
13 Mobility Management (MM) procedures . 190
13.1 General. 190
13.2 Identity procedures. 191

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13.2.1 Procedure for identification of PT.191
13.2.2 Procedure for temporary identity assignment.192
13.3 Authentication procedures .193
13.3.1 Authentication of a PT.194
13.3.2 Authentication of the user.195
13.3.3 Authentication of a FT .195
13.4 Location procedures .196
13.4.1 Location registration .196
13.4.2 Detach .198
13.4.3 Location update.199
13.5 Access rights procedure .199
13.5.1 Obtaining the access rights.199
13.5.2 Termination of access rights .200
13.6 Key allocation procedure .203
13.7 Parameter retrieval procedure .204
13.8 Ciphering related procedure .206
14 Link Control Entity (LCE) procedures.208
14.1 General .208
14.2 Connection oriented link control procedures .209
14.2.1 Link establishment.209
14.2.2 Direct PT initiated link establishment .209
14.2.3 Indirect (paged) FT initiated link establishment.210
14.2.4 Direct FT initiated link establishment (optional) .212
14.2.5 Link maintenance .212
14.2.6 Link suspend and resume .212
14.2.6.1 Link suspend .213
14.2.6.2 Link resume.213
14.2.7 Link release.213
14.2.7.1 NLR notification without "partial release" as release
reason.214
14.2.7.2 NLR notification with "partial release" as release reason .214
14.3 Connectionless link control procedures.214
14.3.1 Message routing.214
14.3.2 Broadcast announce procedure .215
14.4 Procedure for collective and group ringing .215
15 Manageme
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