SIST ETS 300 326-2 E1:2003

SLOVENSKI STANDARD
01-december-2003
Radijska oprema in sistemi (RES) – Prizemni letalski telefonski sistem (TFTS) – 2.
del: Govorne storitve, radijski vmesnik
Radio Equipment and Systems (RES); Terrestrial Flight Telecommunications System
(TFTS); Part 2: Speech services, radio interface
Ta slovenski standard je istoveten z: ETS 300 326-2 Edition 1
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
49.090 2SUHPDLQLQVWUXPHQWLY On-board equipment and
]UDþQLKLQYHVROMVNLKSORYLOLK instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 326-2
TELECOMMUNICATION January 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-5-01/12
ICS: 33.060.50
TFTS, radio interface
Key words:
Radio Equipment and Systems (RES);
Terrestrial Flight Telephone System (TFTS);
Part 2: Speech services, radio interface
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
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 1996. All rights reserved.
New presentation - see History box

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ETS 300 326-2: January 1996
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 300 326-2: January 1996
Contents
Foreword. 15
1 Scope . 17
2 Normative references . 17
3 Abbreviations. 19
4 Introduction to TFTS. 22
4.1 General. 22
4.2 Interface specification objectives. 22
4.3 Interface characteristics . 22
5 Protocol modelling principles . 22
5.1 AS-GSS layering. 23
6 TFTS user-to-network reference configuration. 24
6.1 General. 24
6.1.1 Reference configurations . 24
6.1.2 Functional groups . 24
6.1.3 Reference points. 25
6.1.4 Terminal Equipment (TE) . 25
6.2 TFTS reference configuration. 25
6.3 Interfaces. 27
7 Channel structures and access capabilities. 27
7.1 General. 27
7.2 Channel types and their use: Traffic Channels . 27
7.3 Channel types and their use: Control channels. 28
7.3.1 Logical control channel types. 28
7.3.1.1 Broadcast Control CHannel (BCCH). 28
7.3.1.2 Random Access CHannel (RACH). 28
7.3.1.3 Initial Response Control CHannel (IRCCH). 28
7.3.1.4 Radio Control CHannel (RCCH) . 28
7.3.1.5 Dedicated Control CHannel (DCCH). 28
7.4 GS Access capability . 28
7.5 AS access capability . 30
8 TFTS Radio Interface Layer 1. 31
8.1 Interfaces to the physical layer. 31
8.1.1 Interface to layer 2. 31
8.1.2 Interface to radio resource management. 31
8.1.3 Interface to other functional units. 31
8.2 Services of Layer 1 . 31
8.2.1 Service Access Point (SAP). 32
8.2.2 Service provided . 32
8.2.2.1 Specific services of layer 1 in the AS. 32
8.3 Primitives of layer 1. 32
8.3.1 Generic names of primitives between layer 1 and layer 2 for the transfer
of layer 2 frames. 33
8.3.2 Generic names of primitives between layer 1 and the radio resource
management entity of layer 3 . 33
8.3.3 Primitive types . 33
8.3.4 Parameter definition . 33

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ETS 300 326-2: January 1996
8.4 Layer 1 procedures .35
8.4.1 States of layer 1.35
8.4.2 Remap procedure.35
8.4.2.1 Channel remap protocol .36
8.4.3 Layer 1 interface procedures.36
8.5 Layer 1 peer to peer exchanges.37
8.5.1 BCCH Synchronisation (S) transmission .37
8.5.2 Layer 1 radio control. 37
8.5.3 Layer 1 random access procedures.37
8.5.4 Layer 1 channel access transaction .38
8.6 TDMA characteristics .38
8.6.1 General . 38
8.6.2 Slot structure . 39
8.6.2.1 General slot types . 39
8.6.2.1.1 Field data .39
8.6.2.2 Synchronisation slot types .41
8.6.2.2.1 Field data .41
8.6.3 Functions of logical channels and mapping to physical channels.42
8.6.4 Timing requirements .47
8.6.5 Coding aspects .47
8.6.5.1 G1 Slot. 47
8.6.5.2 G2 Slot. 47
8.6.5.3 G3 Slot. 47
8.6.5.4 Coding and interleaving of G2 and G3 slots .47
8.6.5.5 Coding of S1 slot.49
8.6.5.6 Coding of S2 slot.49
8.7 Modulation characteristics.49
8.7.1 General . 49
8.7.1.1 Type of modulation .49
8.7.1.2 Channel transmission rate.50
8.7.1.3 Data clock stability. 50
8.7.2 Modulator . 50
8.7.2.1 Phase definition .50
8.7.2.2 Modulation filtering and modulated signal definition .51
8.7.2.3 Modulator and transmitter accuracy . 53
8.7.2.3.1 Ideal case. 53
8.7.2.3.2 Real case .53
8.7.2.4 Scrambler .54
8.8 Radio transmission and reception characteristics .55
8.8.1 General characteristics. 55
8.8.1.1 Channelling. 55
8.8.1.1.1 Frequency range .55
8.8.1.1.2 Radio frequency channel arrangement. 55
8.8.1.2 Channel selection time.55
8.8.1.3 Frequency stability.55
8.8.1.3.1 AS.55
8.8.1.3.2 GS.55
8.8.1.4 Modulation .56
8.8.2 Transmitter .56
8.8.2.1 Polarisation .56
8.8.2.2 Radiated power. 56
8.8.2.2.1 AS. 56
8.8.2.2.2 GS . 56
8.8.2.2.2.1 En Route GS (ERGS).56
8.8.2.2.2.2 Intermediate GS (INTGS) . 56
8.8.2.2.2.3 Airport GS (APGS).56
8.8.2.3 Power ramping procedure .56
8.8.2.4 RF spectrum mask.58
8.8.2.5 Out of band emissions.58
8.8.2.6 Spurious emissions .58

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ETS 300 326-2: January 1996
8.8.2.7 Modulation accuracy. 58
8.8.3 Receiver. 58
8.8.3.1 Frequency offsets. 58
8.8.3.2 Static propagation conditions. 59
8.8.3.2.1 Without interferer . 59
8.8.3.2.2 With an interferer created by the
intermodulation of two interfering
signals. 59
8.8.3.2.3 With adjacent interferer: TDM at the
AS receiver and TDMA (uniform
timeslot level) at the GS receiver. 59
8.8.3.2.4 With co-channel TDMA interferer:
variable timeslot level for GS receiver . 60
8.8.4 Dynamic propagation conditions . 60
8.8.4.1 Basic BERs . 60
8.8.4.2 BERs with interfering signals. 61
8.8.4.3 GS receivers. 61
8.8.5 Propagation models. 61
8.8.5.1 General . 61
8.8.5.2 Doppler spectrum types . 61
8.8.5.3 Models . 62
8.8.5.3.1 Airport manoeuvering. 62
8.8.5.3.2 Take-off . 63
8.8.5.3.3 In-flight . 63
8.9 GS antenna characteristics. 63
8.9.1 General . 63
8.9.2 Common characteristics for all GS types. 63
8.9.2.1 Frequency range . 63
8.9.2.2 Polarisation. 63
8.9.2.3 Energy acceptance capability . 64
8.9.3 Specific characteristics for each type of GS. 64
8.9.3.1 Radiation patterns . 64
8.9.3.1.1 En route stations . 64
8.9.3.1.2 Intermediate stations. 65
8.9.3.1.3 Airport stations. 65
8.9.3.2 Antenna height. 65
8.10 Radio sub-system link control. 65
8.10.1 General . 65
8.10.2 Handover general . 65
8.10.2.1 Overall process. 65
8.10.2.2 Decision strategy for GS to GS handover. 66
8.10.2.2.1 Primary handover decision . 66
8.10.3 R.F. power control . 66
8.10.3.1 Purpose. 66
8.10.3.2 Timing. 66
8.10.3.3 Initial exchanges . 66
8.10.4 RF power control at call initiation. 66
8.10.5 Handover procedure . 67
8.10.6 Cell selection and re-selection . 68
8.10.6.1 Overall process. 68
8.10.6.2 Reception of broadcast information. 68
8.10.6.3 GS selection . 68
8.10.6.4 Synchronisation . 69
8.10.6.5 Negotiation. 69
8.10.7 Network pre-requisites. 69
8.10.7.1 BCCH. 69
8.10.7.1.1 BCCH(S) . 69
8.10.7.1.2 BCCH(D). 69
8.10.7.2 GS Handover . 69
8.10.8 Radio Link Measurements (RLM) . 69

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ETS 300 326-2: January 1996
8.10.8.1 Signal strength.69
8.10.8.2 Signal quality.69
8.10.8.2.1 AS.70
8.10.8.2.2 GS.70
8.10.8.2.3 Range of parameter . 70
8.10.8.3 Absolute distance (AS only).70
8.10.8.3.1 Range of parameter . 70
8.10.8.4 Radio Link Failure (RLF).70
8.10.9 Timing control.70
8.10.10 Control parameters.70
8.10.10.1 Definition of network parameters. 71
8.10.10.2 Definition of Radio Resource (RR) parameters. 72
8.10.10.3 Definition of other parameters. 72
8.10.10.4 Calculation of range limit.73
8.11 Radio sub-system synchronisation .74
8.11.1 Introduction.74
8.11.2 GS synchronisation.74
8.11.3 Cold Start Synchronisation (CSS) .74
8.11.3.1 AS cold start requirements . 74
8.11.3.1.1 GS acquisition.74
8.11.3.1.2 Transmitted S2 slot . 74
8.11.3.1.3 Received G3 slot.74
8.11.3.1.4 Timing adjustment.75
8.11.3.2 GS cold start requirements. 75
8.11.3.2.1 S2 reception . 75
8.11.4 Tracking procedure.75
8.11.4.1 AS requirements. 75
8.11.4.2 GS requirements . 75
8.11.5 Warm Start Synchronisation (WSS) .75
8.11.5.1 GS .75
8.11.5.2 AS.75
9 TFTS radio interface layer 2.75
9.1 General .76
9.2 Layer 2 services.76
9.3 Overview description of LAPDa functions and procedures .78
9.3.1 General . 78
9.3.2 Unacknowledged operation .79
9.3.3 Acknowledged operation.79
9.3.4 Information transfer mode.80
9.3.4.1 Information transfer on the BCCH.80
9.3.4.2 Information transfer on the DCCHs.80
9.3.5 Release of layer 2 . 80
9.3.6 Identification of layer 2 end points.80
9.4 Service characteristics and requirements .81
9.4.1 General requirements .81
9.4.2 Services provided to layer 3. 81
9.4.2.1 General. 81
9.4.2.2 Priority. 81
9.4.2.3 Segmentation . 81
9.4.2.4 Unacknowledged information transfer service.81
9.4.2.5 Acknowledged information transfer service .82
9.4.3 Services required from the physical layer .83
9.4.4 Administrative services.84
9.4.4.1 General description of administrative services.84
9.4.4.2 Definition of primitives for administrative services .84
9.5 Overview of Layer 2 structure .84
9.5.1 Functional composition.84
9.5.2 Layer 2 procedure. 85
9.6 Layer 2 specification.85

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ETS 300 326-2: January 1996
9.6.1 General . 85
9.6.2 Frame structure for peer-to-peer communication . 86
9.6.2.1 General . 86
9.6.2.2 Frame format. 86
9.6.2.3 Frame delimitation . 86
9.6.2.4 Header field . 86
9.6.2.5 Information field. 86
9.6.2.6 Fill field . 86
9.6.2.7 Frame Check Sequence. 87
9.6.2.8 Format convention . 87
9.6.2.8.1 Numbering convention . 87
9.6.2.8.2 Mapping to layer 1 message data. 87
9.6.2.8.3 Field mapping convention . 87
9.6.2.9 Invalid frames. 88
9.6.3 Elements of procedure and formats of fields for data-link layer peer-to-
peer communication. 88
9.6.3.1 General . 88
9.6.3.2 Header field format. 88
9.6.3.3 Header field variables . 89
9.6.3.3.1 Command/Response field bit (C/R) . 89
9.6.3.3.2_ Service Access Point Identifier. 89
9.6.3.3.3 Length field . 89
9.6.3.3.4 More data bit (M) . 89
9.6.3.3.5 Control field. 89
9.6.3.4 Control field formats . 90
9.6.3.4.1 Information transfer (I) format. 90
9.6.3.4.2 Supervisory (S) format. 90
9.6.3.4.3 Unnumbered (U) format. 90
9.6.3.5 Control field parameters and associated state variables . 90
9.6.3.5.1 Poll/Final bit . 90
9.6.3.5.2 Multiple frame operation, variables and sequence
numbers. 91
9.6.3.5.2.1 Modulus. 91
9.6.3.5.2.2 Send state variable V(S) . 91
9.6.3.5.2.3 Acknowledge state variable V(A) . 91
9.6.3.5.2.4 Send sequence number N(S) . 91
9.6.3.5.2.5 Receive state variable V(R). 91
9.6.3.5.2.6 Receive sequence number N(R). 91
9.6.3.5.3 Unacknowledged operation - variables and parameters . 91
9.6.3.6 Frame types. 92
9.6.3.6.1 Commands and responses . 92
9.6.3.6.2 Information (I) commands. 92
9.6.3.6.3 Set Asynchronous Balanced Mode (SABM) command . 92
9.6.3.6.4 DISconnect (DISC) command. 93
9.6.3.6.5 Unnumbered information (UI) command. 93
9.6.3.6.6 Receive ready (RR) command/response . 93
9.6.3.6.7 Reject (REJ) command/response. 93
9.6.3.6.8 Receive not ready (RNR) command/response. 94
9.6.3.6.9 Unnumbered Acknowledgement (UA) response. 94
9.6.3.6.10 Disconnected Mode (DM) response . 94
9.6.3.6.11 FRaMe Reject (FRMR) response. 94
9.6.4 Elements for layer-to-layer communication . 95
9.6.4.1 General . 95
9.6.4.1.1 Generic names. 95
9.6.4.1.1.1 DL-ESTABLISH. 97
9.6.4.1.1.2 DL RELEASE. 97
9.6.4.1.1.3 DL-DATA. 97
9.6.4.1.1.4 DL-UNIT DATA. 97
9.6.4.1.1.5 DL-SUSPEND . 97
9.6.4.1.1.6 DL-RESUME. 97

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9.6.4.1.1.7 Management Data Link (MDL)-RELEASE.98
9.6.4.1.1.8 MDL-ERROR . 98
9.6.4.1.1.9 PH-DATA.98
9.6.4.1.2 Primitive types.98
9.6.4.1.3 Parameter definition.98
9.6.4.1.3.1 Priority indicator. 98
9.6.4.1.3.2 Message unit.98
9.6.4.1.3.3 Release mode .99
9.6.4.1.3.4 Error cause . 99
9.6.4.1.3.5 Establish mode.99
9.6.4.2 Primitive procedures .99
9.6.5 Definition of the peer-to-peer procedures of the data link layer. 100
9.6.5.1 General. 100
9.6.5.2 Procedure for the use of the P/F bit . 100
9.6.5.2.1 Unacknowledged information transfer. 100
9.6.5.2.2 Acknowledged multiple frame information transfer. 100
9.6.5.3 Procedures for unacknowledged information transfer. 101
9.6.5.3.1 General. 101
9.6.5.3.2 Transmission of unacknowledged information. 101
9.6.5.3.3 Receipt of unacknowledged information. 101
9.6.5.4 Procedures for establishment and release of multiple
frame operation . 101
9.6.5.4.1 Establishment of multiple frame operation. 101
9.6.5.4.1.1 General. 101
9.6.5.4.1.2 Normal establishment procedures . 102
9.6.5.4.1.3 Procedure on expiry of timer T200: normal establishment 103
9.6.5.4.1.4 Contention resolution establishment procedure. 103
9.6.5.4.1.5 Procedure on expiry of timer T200; contention resolution
(AS only). 105
9.6.5.4.2 Information transfer. 105
9.6.5.4.2.1 General requirements. 105
9.6.5.4.2.2 Error conditions . 105
9.6.5.4.2.3 Fill frames. 106
9.6.5.4.3 Suspension and resumption of multiple frame operation . 106
9.6.5.4.3.1 General. 106
9.6.5.4.3.2 Suspension. 106
9.6.5.4.4 Resumption of multiple frame operation. 107
9.6.5.4.4.1 Procedure on expiry of timer T200 . 107
9.6.5.4.5 Termination of multiple frame operation . 108
9.6.5.4.5.1 General. 108
9.6.5.4.5.2 Normal release procedure . 108
9.6.5.4.5.3 Procedure on expiry of timer T200 for normal release. 108
9.6.5.4.5.4 Local end release procedure . 109
9.6.5.4.6 Idle state. 109
9.6.5.4.7 Collision of unnumbered commands and responses . 110
9.6.5.4.7.1 Identical transmitted and received commands . 110
9.6.5.4.7.2 Different transmitted and received commands. 110
9.6.5.4.7.3 Unsolicited DM response and SABM or DISC command . 110
9.6.5.5 Procedures for information transfer in multiple frame
operation. 110
9.6.5.5.1 Transmitting I frames . 110
9.6.5.5.2 Receiving I frames . 111
9.6.5.5.2.1 P bit set to "1" . 111
9.6.5.5.2.2 P bit set to "0" . 111
9.6.5.5.3 Receiving acknowledgement. 112
9.6.5.5.4 Receiving REJ frames. 112
9.6.5.5.4.1 Transmitting I frames . 113
9.6.5.5.4.2 Response to supervisory command frames. 113
9.6.5.5.5 Receiving RNR frames . 113
9.6.5.5.6 Data link layer own receiver busy condition. 115

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9.6.5.5.7 Waiting acknowledgement. 115
9.6.5.6 Abnormal release and re-establishment of multiple frame
operation . 116
9.6.5.6.1 Criteria for re-establishment . 116
9.6.5.6.2 Criteria for abnormal release. 116
9.6.5.6.3 Procedures for re-establishment. 116
9.6.5.6.4 Procedures for abnormal release. 116
9.6.5.7 Exception condition reporting and recovery for multiple
frame operation. 117
9.6.5.7.1 N(S) sequence error . 117
9.6.5.7.2 N(R) sequence error. 117
9.6.5.7.3 Timer recovery. 117
9.6.5.7.4 Invalid frame condition. 118
9.6.5.7.5 Frame rejection condition . 118
9.6.5.7.6 Receipt of an FRMR response frame . 118
9.6.5.7.7 Radio link failure condition . 118
9.6.5.8 List of system parameters. 118
9.6.5.8.1 Timer T200 . 118
9.6.5.8.2 Maximum number of re-transmissions (N200). 118
9.6.5.8.3 Maximum number of octets in an information field (N201). 118
9.6.5.8.4 Number of octets in a frame (N202) . 119
9.6.5.8.5 Maximum number of octets in a message unit parameter
(N203). 119
9.6.5.8.6 Maximum number of outstanding I frames (k). 119
10 AS - GSS layer 3 specification . 119
10.1 Introduction. 119
10.1.1 General . 119
10.1.2 Objectives . 119
10.1.3 General characteristics. 119
10.1.3.1 Technique of description. 119
10.1.3.2 Primitives . 120
10.1.3.3 Peer-to-peer communication. 120
10.2 Structure of signalling functions . 120
10.2.1 Basic groups of functions. 120
10.2.2 Protocol architecture . 120
10.3 Services provided by signalling layer 3 on the AS side. 122
10.3.1 CC services . 122
10.3.1.1 General . 122
10.3.1.2 Service state diagram . 122
10.3.1.3 Service primitives. 123
10.4 Services provided by signalling layer 3 on the GSS side. 124
10.4.1 CC services . 124
10.4.1.1 General . 124
10.4.1.2 Service state diagram . 124
10.4.1.3 Service primitives. 125
10.5 Services assumed from signalling layer 2. 126
10.5.1 General . 126
10.5.2 Service primitives . 126
10.5.2.1 Unacknowledged information transfer. 126
10.5.2.2 Acknowledged information transfer . 127
10.6 Inter-layer service interfaces on the AS side. 127
10.6.1 Services provided by the RRM entity . 127
10.6.1.1 General . 127
10.6.1.2 Service state diagram . 128
10.6.1.3 Service primitives. 129
10.7 Inter-layer service interfaces on the GS side. 130
10.7.1 Services provided by the RRM entity . 130
10.7.1.1 General . 130
10.7.1.2 Service state diagram . 131

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ETS 300 326-2: January 1996
10.7.1.3 Service primitives. 132
10.8 Service assumed from layer 1 . 133
10.8.1 General . 133
10.8.2 Service primitives . 133
10.9 Functions provided by layer 3 entities. 133
10.9.1 Functions provided by the RRM entity . 133
10.9.2 Functions provided by the CC management entity . 133
10.9.3 Functions provided by the distribution entity . 133
10.9.4 Functions provided by the MR entity. 134
10.10 Call setup examples . 134
10.11 Radio interface layer 3 specification. 135
10.11.1 General . 135
10.11.1.1 Scope of the specification. 135
10.11.1.2 Application to the interface structure. 135
10.11.1.3 Structure of the layer 3 procedures. 136
10.11.1.4 Test procedures . 136
10.11.1.5 Use of logical channels. 136
10.11.2 Overview of control procedures. 136
10.11.2.1 List of procedures. 136
10.11.2.2 Procedure for contention resolution . 136
10.11.2.3 General recovery procedures . 137
10.11.2.3.1 Normal message flow . 137
10.11.2.3.2 Expiry of the request timer T . 137
10.11.2.3.3 Change of dedicated channels using
SAPI=0. 137
10.11.2.4 Sequenced message transfer operation. 137
10.11.2.4.1 Variables and sequence numbers . 138
10.11.2.4.1.1 Send state variable V(SD). 138
10.11.2.4.1.2 Send sequence number N(SD). 138
10.11.2.4.2 Procedure for the setting, transfer and
termination of sequenced message
transfer. 138
10.11.2.4.2.1 Setting. 138
10.11.2.4.2.2 Transfer. 138
10.11.2.4.2.3 Termination. 138
10.11.3 Elementary procedures for RRM . 138
10.11.3.1 Overview. 138
10.11.3.1.1 General . 138
10.11.3.1.2 Service provided to upper layers. 139
10.11.3.1.2.1 The null state . 139
10.11.3.1.2.2 Services provided in idle mode . 139
10.11.3.1.2.3 Establishment and release of an RR-
connection . 139
10.11.3.1.2.4 Service provided in RR connected
mode. 139
10.11.3.1.3 Service required from data link and
physical layers . 139
10.11.3.1.4 Terminology. 140
10.11.3.2 System management procedures. 140
10.11.3.2.1 BCCH (D) data acquisition (AS side). 140
10.11.3.2.2 Other system data acquisition (AS
side). 140
10.11.3.2.3 Broadcast system information (GS
side). 140
10.11.3.3 Paging procedures. 142
10.11.3.3.1 Paging of a subscriber . 142
10.11.3.3.1.1 Initiation of the PAGE . 142
10.11.3.3.1.2 Broadcast duration for paging. 142
10.11.3.3.1.3 PAGE response . 142
10.11.3.3.1.4 Release of the connection . 142

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10.11.3.3.1.5 Abnormal cases . 142
10.11.3.3.2 Engineering paging (ENGPAGE). 142
10.11.3.3.2.1 Initiation of the ENGPAGE . 142
10.11.3.3.2.2 Broadcast duration for ENGPAGE. 142
10.11.3.3.2.3 ENGPAGE respon
...