ETSI ETR 120 ed.1 (1994-11)

SLOVENSKI STANDARD
PSIST ETR 120:1999
01-julij-1999
Radijska oprema in sistemi (RES) - Vseevropski sistem snopovnega radia (TETRA)
- Govor in podatki (V+D) - Odprti kanal
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Open channel
Ta slovenski standard je istoveten z: ETR 120 Edition 1
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
PSIST ETR 120:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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PSIST ETR 120:1999

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PSIST ETR 120:1999
ETSI ETR 120
TECHNICAL November 1994
REPORT
Source: ETSI TC-RES Reference: DTR/RES-06008
ICS: 33.060.20
TETRA, V + D, open channel
Key words:
Radio Equipment and Systems (RES);
Trans-European Trunked Radio system (TETRA);
Voice plus Data (V + D)
Open channel
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 1994. All rights reserved.
New presentation - see History box

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PSIST ETR 120:1999
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ETR 120: November 1994
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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ETR 120: November 1994
Contents
Foreword .15
1 Scope .17
2 References.17
3 Definitions and abbreviations .17
3.1 Definitions .17
3.2 Abbreviations .19
4 Applicability of services .19
5 Realisation of service .19
6 Other users perception of the open channel operation .20
6.1 Single timeslot open channel operation.20
6.2 Distinction between group call and circuit mode data.21
7 Optimisation of the call set-up protocol .21
7.1 Definition of performance parameters .21
7.1.1 Open channel establishment time.21
7.1.2 Transaction set-up time.23
7.1.3 Resource gain of pseudo open channel versus open channel operation .23
7.1.4 Channel availability versus system load.23
7.1.5 End of transaction mechanism.24
8 Optimisation of the supplementary services involved at the set-up .24
8.1 Definition of performance parameters .24
8.1.1 Automatic invocation of supplementary services on call to GSSI .24
8.1.2 Dynamic group address assignment.24
8.1.3 Transfer of control on the open channel operation .24
9 System performance parameters.25
9.1 Modelling of the air interface protocol.25
9.1.1 Transmission trunking mode of operation.25
9.1.2 Message trunking mode of operation.25
10 Composition of annexes.25
Annex A (informative): Group voice call scenarios (TETRA 03.52).26
A.1 Procedures for message trunked systems.26
A.1.1 General .26
A.1.2 Call set-up.26
A.1.2.1 Traffic channel assignment .27
A.1.3 Request-to-transmit .28
A.1.4 Response to request-to-transmit .28
A.1.5 Permission to transmit withdrawn .29
A.1.6 Permission to continue with withdrawn call.29
A.1.7 End of transmission .29
A.1.8 Stop-transmission order.29
A.1.9 Call clearing .29
A.1.9.1 Mobile originated .29
A.1.9.2 SwMI originated.30
A.2 Procedures for transmission trunked systems.30

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A.2.1 General. 30
A.2.2 Call set-up . 31
A.2.2.1 Traffic channel assignment. 32
A.2.3 Request-to-transmit. 32
A.2.4 Response to request-to-transmit. 33
A.2.5 Permission to transmit withdrawn . 34
A.2.6 Permission to continue with withdrawn call. 34
A.2.7 End of transmission. 34
A.2.8 Stop-transmission order.34
A.2.9 Call clearing. 34
A.2.9.1 Mobile originated. 34
A.2.9.2 SwMI originated . 35
A.3 Procedures for quasi-transmission trunked systems. 35
A.3.1 General. 35
A.3.2 Call set-up . 36
A.3.2.1 Traffic channel assignment. 37
A.3.3 Request-to-transmit. 37
A.3.4 Response to request-to-transmit. 38
A.3.5 Permission to transmit withdrawn . 39
A.3.6 Permission to continue with withdrawn call. 39
A.3.7 End of transmission. 39
A.3.8 Stop-transmission order.39
A.3.9 Call clearing. 39
A.3.9.1 Mobile originated. 39
A.3.9.2 SwMI originated . 40
Annex B (informative): Supplementary Service stage 1: Access Priority (SS-AP) (TETRA 03.69). 41
B.1 Scope. 41
B.2 Normative references . 41
B.3 Definitions and abbreviations (TETRA 01.04) .41
B.3.1 Definitions. 41
B.3.2 Abbreviations. 41
B.3.2.1 General abbreviations. 41
B.3.2.2 Supplementary service abbreviations. 42
B.4 Supplementary Service Access Priority (SS-AP) Stage 1 specification . 42
B.4.1 Description . 42
B.4.1.1 General description. 42
B.4.1.2 Qualifications on applicability to telecommunication services . 43
B.4.2 Procedures. 43
B.4.2.1 Provision and withdrawal . 43
B.4.2.2 Normal procedures . 43
B.4.2.2.1 Activation, deactivation, registration, and interrogation. 43
B.4.2.2.1.1 Local activation and deactivation . 43
B.4.2.2.1.2 Remote activation and deactivation . 43
B.4.2.2.1.3 Registration . 44
B.4.2.2.1.4 Interrogation . 44
B.4.2.2.2 Invocation and operation. 44
B.4.2.3 Exceptional procedures . 44
B.4.2.3.1 Activation, deactivation, registration and interrogation. 44
B.4.2.3.1.1 Activation and deactivation. 44
B.4.2.3.1.2 Registration . 45
B.4.2.3.1.3 Interrogation . 45
B.4.2.4.1 Invocation and operation. 45
B.4.3 Interactions with other supplementary services . 45
B.4.3.1 Calling Line Identification Presentation (SS-CLIP) . 45
B.4.3.2 Connected Line identification Presentation (SS-COLP) . 45
B.4.3.3 Calling/Connected Line Identification Restriction (SS-CLIR). 45
B.4.3.4 Call Report (SS-CR) . 45

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B.4.3.5 Talking Party Identification (SS-TPI) .45
B.4.3.6 Call Forwarding Unconditional (SS-CFU).45
B.4.3.7 Call Forwarding on mobile subscriber Busy (SS-CFB) .45
B.4.3.8 Call Forwarding on No Reply (SS-CFNRy) .46
B.4.3.9 Call Forwarding on mobile subscriber Not Reachable (SS-CFNRc).46
B.4.3.10 List Search Call (SS-LSC).46
B.4.3.11 Call Authorized by Dispatcher (SS-CAD) .46
B.4.3.12 Short Number Addressing (SS-SNA) .46
B.4.3.13 Area Selection (SS-AS).46
B.4.3.14 Access Priority (SS-AP) .46
B.4.3.15 Priority Call (SS-PC).46
B.4.3.16 Call Waiting (SS-CW) .46
B.4.3.17 Call Hold (SS-HOLD) .46
B.4.3.18 Call Completion to Busy Subscriber (SS-CCBS) .46
B.4.3.19 Late Entry (SS-LE) .46
B.4.3.20 Transfer of Control (SS-TC).46
B.4.3.21 Pre-emptive Priority Call (SS-PPC).46
B.4.3.22 Include Call (SS-IC).46
B.4.3.23 Advice of Charge (SS-AoC) .47
B.4.3.24 Barring of Outgoing Calls (SS-BOC).47
B.4.3.25 Barring of Incoming Calls (SS-BIC).47
B.4.3.26 Discreet Listening (SS-DL).47
B.4.3.27 Ambience Listening (SS-AL) .47
B.4.3.28 Dynamic Group Number Assignment (DGNA).47
B.4.3.29 Call Completion on No Reply (SS-CCNR) .47
B.4.3.30 Call Retention (SS-CRT).47
B.4.4 Interworking considerations .47
B.4.5 Overall SDL.47
Annex C (informative): Supplementary Service stage 1: Priority Call (SS-PC) (TETRA 03.70).50
C.1 Scope .50
C.2 Normative references.50
C.3 Definitions, symbols and abbreviations (if any) .50
C.3.1 Definitions (TETRA 01.04).50
C.3.2 Abbreviations (TETRA 01.04).50
C.3.2.1 General abbreviations .50
C.3.2.2 Supplementary service abbreviations .51
C.4 Supplementary Service Priority Call (SS-PC) Stage 1 specification .51
C.4.1 Description.51
C.4.1.1 General description .51
C.4.1.2 Qualifications on applicability to telecommunication services.52
C.4.2 Procedures.52
C.4.2.1 Provision and withdrawal.52
C.4.2.2 Normal procedures.52
C.4.2.2.1 Activation, deactivation, registration, and interrogation .52
C.4.2.2.1.1 Activation and deactivation .52
C.4.2.2.1.2 Remote activation and deactivation.52
C.4.2.2.1.3 Definition.52
C.4.2.2.1.4 Registration.52
C.4.2.2.1.5 Interrogation.52
C.4.2.2.2 Invocation and operation .53
C.4.2.3 Exceptional procedures.53
C.4.2.3.1 Activation, deactivation, registration, and interrogation .53
C.4.2.3.1.1 Activation and deactivation .53
C.4.2.3.1.2 Remote activation and deactivation.53
C.4.2.3.1.3 Definition.53
C.4.2.3.1.4 Registration.53
C.4.2.3.1.5 Interrogation.53
C.4.2.3.2 Invocation and operation .54

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C.4.3 Interactions with other supplementary services . 54
C.4.3.1 Calling Line Identification Presentation (SS-CLIP) . 54
C.4.3.2 Connected Line identification Presentation (SS-COLP) . 54
C.4.3.3 Calling/Connected Line Identification Restriction (SS-CLIR). 54
C.4.3.4 Call Report (SS-CR) . 54
C.4.3.5 Talking Party Identification (SS-TPI). 54
C.4.3.6 Call Forwarding Unconditional (SS-CFU) . 54
C.4.3.7 Call Forwarding on mobile subscriber Busy (SS-CFB). 54
C.4.3.8 Call Forwarding on No Reply (SS-CFNRy). 54
C.4.3.9 Call Forwarding on mobile subscriber Not Reachable (SS-CFNRc) . 54
C.4.3.10 List Search Call (SS-LSC) . 54
C.4.3.11 Call Authorized by Dispatcher (SS-CAD). 54
C.4.3.12 Short Number Addressing (SS-SNA) . 55
C.4.3.13 Area Selection (SS-AS) . 55
C.4.3.14 Access Priority (SS-AP). 55
C.4.3.15 Priority Call (SS-PC) . 55
C.4.3.16 Call Waiting (SS-CW). 55
C.4.3.17 Call Hold (SS-HOLD). 55
C.4.3.18 Call Completion to Busy Subscriber (SS-CCBS). 55
C.4.3.19 Late Entry (SS-LE). 55
C.4.3.20 Transfer of Control (SS-TC) . 55
C.4.3.21 Pre-emptive Priority Call (SS-PPC) . 55
C.4.3.22 Include Call (SS-IC) . 55
C.4.3.23 Advice of Charge (SS-AoC). 56
C.4.3.24 Barring of Outgoing Calls (SS-BOC) . 56
C.4.3.25 Barring of Incoming Calls (SS-BIC) . 56
C.4.3.26 Discreet Listening (SS-DL) . 56
C.4.3.27 Ambience Listening (SS-AL). 56
C.4.3.28 Dynamic Group Number Assignment (SS-DGNA) . 56
C.4.3.29 Call Completion on No Reply (SS-CCNR). 56
C.4.3.30 Call Retention (SS-CRT) . 56
C.4.4 Interworking considerations . 56
C.4.5 Overall SDL. 57
Annex D (informative): Supplementary Service stage 1: Pre-emptive Priority Call (SS-PPC) (TETRA
03.76). 58
D.1 Scope. 58
D.2 Normative references . 58
D.3 Definitions and abbreviations (TETRA 01.04) .58
D.3.1 Definitions. 58
D.3.2 Abbreviations. 59
D.3.2.1 General abbreviations. 59
D.3.2.2 Supplementary service abbreviations. 59
D.4 Supplementary Service Pre-emptive Priority Call (SS-PPC) Stage 1 specification. 60
D.4.1 Description . 60
D.4.1.1 General description. 60
D.4.1.2 Qualifications on applicability to telecommunication services . 60
D.4.2 Procedures. 60
D.4.2.1 Provision and withdrawal . 60
D.4.2.2 Normal procedures . 61
D.4.2.2.1 Activation, deactivation, registration, and interrogation. 61
D.4.2.2.1.1 Activation and deactivation. 61
D.4.2.2.1.2 Registration . 61
D.4.2.2.1.3 Interrogation . 61
D.4.2.2.2 Invocation and operation. 61
D.4.2.2.2.1 Pre-empting individual call . 62
D.4.2.2.2.2 Pre-empting group call . 62
D.4.2.3 Exceptional procedures . 63
D.4.2.3.1 Activation, deactivation, registration, and interrogation. 63

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D.4.2.3.1.1 Activation and deactivation .63
D.4.2.3.1.2 Registration.63
D.4.2.3.1.3 Interrogation.63
D.4.2.3.2 Invocation and operation .63
D.4.3 Interactions with other supplementary services.63
D.4.3.1 Calling Line Identification Presentation (SS-CLIP).63
D.4.3.2 Connected Line identification Presentation (SS-COLP).63
D.4.3.3 Calling/Connected Line Identification Restriction (SS-CLIR) .63
D.4.3.4 Call Report (SS-CR).63
D.4.3.5 Talking Party Identification (SS-TPI) .63
D.4.3.6 Call Forwarding Unconditional (SS-CFU).64
D.4.3.7 Call Forwarding on mobile subscriber Busy (SS-CFB) .64
D.4.3.8 Call Forwarding on No Reply (SS-CFNRy) .64
D.4.3.9 Call Forwarding on mobile subscriber Not Reachable (SS-CFNRc).64
D.4.3.10 List Search Call (SS-LSC).64
D.4.3.11 Call Authorized by Dispatcher (SS-CAD) .64
D.4.3.12 Short Number Addressing (SS-SNA) .64
D.4.3.13 Area Selection (SS-AS).64
D.4.3.14 Access Priority (SS-AP) .64
D.4.3.15 Priority Call (SS-PC).64
D.4.3.16 Call Waiting (SS-CW) .65
D.4.3.17 Call Hold (SS-HOLD) .65
D.4.3.18 Call Completion on Busy Subscriber (SS-CCBS) .65
D.4.3.19 Late Entry (SS-LE) .65
D.4.3.20 Transfer of Control (SS-TC).65
D.4.3.21 Pre-emptive Priority Call (SS-PPC).65
D.4.3.22 Include Call (SS-IC).65
D.4.3.23 Advice of Charge (SS-AoC) .65
D.4.3.24 Barring of Outgoing Calls (SS-BOC).66
D.4.3.25 Barring of Incoming Calls (SS-BIC).
...