1、I ETS 300 102-1 December 1990 . UDC: 621.395 Key words: ISDN, layer 3, basic call control Integrated Services Digital Network (ISDN); User-network interface layer 3 Specifications for basic call control ETSI European Telecommunications Standards Institute ETSI Secretariat: B.P. 152 . F - 06561 Valbo
2、nne Cedex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx. 47 O0 40 F European Telecommunications Standards Institute 1 990. All rights reserved. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on repro
3、duction and use extend to all media in which the information may be embodied. . 3404583 0024844 4 Page 3 ETS 300 102-1 Contents Foreword . 11 1 General 13 1.1 Scope 13 1.2 Application to interface structures 13 2 Overview of call control . 13 2.1 Circuit switched calls 14 2.1.1 Call states at the us
4、er side of the interface . . . 14 2.1.1.1 Null state (UO) 14 2.1.1.2 Call initiated (U11 14 2.1.1.3 Overlap sending (U21 . 14 2.1.1.4 Outgoing call proceeding (U31 14 2.1.1.5 Call delivered (U4) . 14 2.1.1.6 Call present (U6) 14 2.1.1.7 Call received (U7) 14 2.1.1.8 Connect request (U8) . 14 2.1.1.9
5、 Incoming call proceeding (U91 14 2.1.1.10 Active (U101 . 14 2.1.1.11 Disconnect request (U11) 14 2.1.1.1 2 Disconnect indication (U1 2) . 14 2.1.1.13 Suspend request (U15) 15 2.1.1.14 Resume request (U17) . 15 2.1.1.15 Release request (U19) . 15 2.1.1.1 6 Overlap receiving (U25) 15 2.1.2 Network ca
6、ll states 15 2.1.2.1 Null state (NO) 15 2.1.2.2 Call initiated (Nl) 15 2.1.2.3 Overlap sending (N2) . 15 2.1.2.4 Outgoing call proceeding (N3) 15 2.1.2.5 Call delivered (N4) . 15 2.1.2.6 Call present (N6) 15 2.1.2.7 Call received (N7) 15 2.1 2.8 Connect request (N8) . 15 2.1.2.9 Incoming call procee
7、ding (N9) 15 2.1.2.10 Active (N10) . 16 2.1.2.11 Disconnect request (N11) 16 2.1.2.12 Disconnect indication (N12) . 16 2.1.2.13 Suspend request (N15) 16 2.1.2.14 Resume request (N17) . 16 2.1.2.15 Release request (N19) . 16 2.1.2.16 Callabort(N22) . 16 2.1.2.17 Overlap receiving (N25) 16 2.2 Packet
8、mode access connections 16 2.3 Temporary signalling connections 16 2.4 States associated with the global call reference . 16 2.4.1 Call states at the user side of the interface . 16 2.4.1.1 Null (Resto) . 16 2.4.1.2 Restart request (Rest 1) 16 2.4.1.3 Restart (Rest 2) . 17 2.4.2 Call states at the n
9、etwork side of the interface 17 2.4.2.1 Null (Rest O) . 17 2.4.2.2 Restart request (Rest 1) 17 2.4.2.3 Restart (Rest 2) . 17 . E 3404583 0024845 b I Page 4 ETS 300 102-1 Message functional definitions and content 3.1 Messages for circuit mode connection control . 18 3.1.2 Call proceeding 19 3.1.3 Co
10、ngestion control 20 3.1.4 Connect . 21 3.1.5 Connect acknowledge 21 3.1.6 Disconnect . 22 3.1.7 Facility 23 3.1.8 Information . 23 3.1.10 Progress . 24 3.1.11 Release . 25 3,1.12 Release complete . 25 3.1.13 Resume . 26 3.1.14 Resume acknowledge 27 3.1.15 Resumereject . 27 3.1.16 Setup 27 3.1.17 Set
11、upacknowledge . 29 3.1.18 Status 30 3.1.19 Status enquiry . 30 3.1.20 Suspend . 31 3.1.21 Suspend acknowledge 31 3.1.22 Suspend reject 31 3.1.23 User information . 31 3.2 Messages for packet mode connection control 32 3.4 Messages used with the global call reference . 32 3.4.1 Restart . 32 3.4.2 Res
12、tart acknowledge 33 3.4.3 Status 33 4 General message format and information elements coding 34 4.2 Protocol discriminator . 35 4.3 Call reference 36 4.4 Message type 37 4.5 Other information elements . 38 4.5.1 Coding Rules 38 4.5.1.1 CodesetO . 40 . 42 4.5.2 . 42 4.5.3 Locking shift procedure . 43
13、 4.5.4 Non-locking shift procedure 44 4.5.5 Bearer capability . 45 4.5.6 Call Identity 53 4.5.7 Call State 54 4.5.8 Called party number . 55 4.5.9 Called party subaddress 56 4.5.10 Calling Party Number 58 4.5.1 1 Calling party subaddress 59 4.5.12 Cause 61 4.5.13 Channel identification 68 4.5.14 Con
14、gestion level . 71 4.5.15 Display . 71 4.5.16 High layer compatibility . 71 4.5.17 Keypad facility Y4 4.5.18 Low layer compatibility 74 4.5.19 Moredata . 83 4.5.20 Network-specific facilities . 83 4.5.21 Notification indicator . 84 4.5.22 Progress indicator 85 4.5.23 Repeat indicator 86 4.5.24 Resta
15、rt indicator . 86 4.5.25 Segmented message . 87 4.5.26 Sending complete 87 4.5.27 Signal 88 4.5.28 Transit network selection 88 4.5.29 User-user 89 17 3.1.1 Alerting . 18 3.1.9 Notify 24 3.3 Messages for user to user signalling not associated with circuit switched calls . 32 4.1 Overview . 34 . II 3
16、404583 O024846 8 . Page 5 ETS 300 102-1 4.6 Supplementary services information elements 91 4.6.1 Datehime 91 4.6.2 Facility. 91 4.6.2.1 Invoke component . 94 4.6.2.2 Return result component . 97 4.6.2.3 Return error component 98 4.6.3 Feature activation . 99 4.6.4 Feature indication 99 4.6.5 Switchh
17、ook . 99 4.7 Information elements for packet communications 99 5 Circuit switched call control procedures . 100 5.1 Call establishment at the originating interface 100 5.1.1 Call request . 100 5.1.2 B-channel selection - originating 101 5.1.4 Invalid call information 102 5.1.5 Call proceeding . 102
18、5.1.5.1 Call proceeding. en-bloc sending 102 5.1.5.2 Call proceeding. overlap sending 103 5.1.6 Notification of interworking at the originating interface 103 5.1.7 Call confirmation indication . 104 5.1.8 Call connected . 104 5.1.9 Call rejection . 104 5.1.10 Transit network selection . 104 5.2 Call
19、 establishment at the destination interface 104 5.2.1 Incoming call . 104 5.2.2 Compatibility checking 105 5.2.3 B-channel selection-destination . 106 5.2.3.1 SETUP message delivered by point-to-point data link . 106 5.2.3.2 SETUP message delivered by broadcast data link 106 5.2.4 Overlap receiving
20、107 5.2.5 Call confirmation 108 5.2.5.1 Response to en-bloc SETUP or completion of overlap receiving . 108 5.2.5.2 Receipt of CALL PROCEEDING and ALERTING . 108 5.2.5.3 Called user clearing during incoming call establishment . 109 5.2.5.4 Call failure 110 5.2.6 Notification of interworking at the te
21、rminating interface . 110 5.2.7 Call accept 111 5.2.8 Active indication 111 5.2.9 Non-selected user clearing 111 5.3 Call clearing 111 5.3.1 Terminology . 111 5.3.2 Exception conditions 11 5.3.3 Clearing initiated by the user 112 5.3.4 Clearing initiated by the network 113 5.3.4.1 Clearing when tone
22、slannouncements provided . 113 5.3.4.2 Clearing when toneslannouncements not provided 113 5.3.4.3 Completion of clearing . 113 5.3.5 Clear collision 113 5.4 In-band tones and announcements . 114 5.5 Restart procedure 114 5.5.1 Sending RESTART . 114 5.5.2 Receipt of RESTART 114 5.6 Call rearrangement
23、s . 115 5.6.1 Call suspension . 116 5.6.2 Call suspended . 116 5.6.3 Call suspend error . 116 5.6.4 Call re-establishment 116 5.6.5 Call resume errors . 117 5.6.6 Double suspension . 117 5.6.7 Call re-arrangement notification controlled by an NT2 117 5.7 Call collisions . 117 0 3404583 0024847 T Pag
24、e 6 ETS 300 102-1 5.8 Handling of error conditions 117 5.8.1 Protocol discrimination error . 117 5.8.2 Message too short . 117 5.8.3 Call reference error . 118 5.8.3.1 Invalid call reference format . 118 5.8.3.2 Call reference procedural errors . 118 5.8.4 Message type or message sequence errors . 1
25、 18 5.8.5 General information element errors 119 5.8.5,l Information element out of sequence . 119 5,8.5.2 Duplicated information elements 119 5.8.6 Mandatory information element errors 119 5.8.6,l Mandatory information element missing . 119 5.8.6.2 Mandatory information element content error 119 5.
26、8.7 Non-mandatory information element errors . 120 5.8.7.1 Unrecognized information element . 120 5.8.7.2 Non-mandatory information element content error . 120 5.8.8 Data link reset 120 5.8.9 Data link failure . 121 5.8.10 Status enquiry procedure . 121 5.81 1 Receiving a STATUS message . 122 5.9 Us
27、er notification procedure 123 6 Packet communication procedures . 123 7 User-to user signalling procedures . 7.1 Procedures for user-to-user signalling associated with circuit-switched calls . 7.1.1 General 7.1.2 Explicit invocation procedures for services 1. 2. and 3 7.1,3 User-to-User Signalling S
28、ervice 1 7.1.3.1 General characteristics 7.1,3.2 User-to-user signalling in the call setup and clearing phases - Implicit service request (preferred. .e. not required) setup and 7.1.3.3 User-to-user signalling in the call es . 143 G.2.2 Cause #38 “network out of order“ . 143 G.2.3 Cause #41 “Tempora
29、ry failure“ . 143 G.2.4 Cause #42 “switching equipment congestion“ 143 G.2.5 Cause #43 “access information discarded“ 144 G.2.6 Cause #44 “requested circuit/channel not available“ 144 G.2.7 Cause #47 “resource unavailable. unspecified“ . 144 G.3 Service or option not available class . 144 G.3.1 Caus
30、e #49 “quality of service not available“ . 144 G.3.2 Cause #50 “requested facility not subscribed“ . 144 G.3,3 Cause #57 “Baarer capability not authorised“ 144 G,3.4 Cause #58 “Bearer capability not presently available“ . 144 G.3.5 Cause #63 “Service or option not available “unspecified“ 144 G.4 Ser
31、vice or option not implemented class . G.4.1 Cause #65 “bearer capability not implemented“ . G.4.2 Cause #66 “channel type not implemented“ . G.4.3 Cause #69 “requested facility not implemented“ G.4.4 Cause #70 “only restricted digital information bearer capability is available“ G.4.5 Cause #79 “ser
32、vice or option not implemented. unspecified“ G.5 Invalid message (e.9. parameter out of range) class . G.5.1 Cause #81 “invalid call reference value“ . G.5.2 Cause #82 “identified channel does not exist“ . G.5.3 Cause #83 “a suspended call exists. but this call identity does not“ . G.5.4 Cause #84 “
33、call identity in use“ . G.5,5 Cause #85 “no call suspended“ . G.5.6 Cause #86 “call having the requested call identity has been cleared“ . .-. (3.5.7 Cause #88 “incompatible destination“ . G.5.8 Cause #91 “invalid transit network selection“ G.5.9 Cause #95 “invalid message. unspecified“ 1 1 1 1 1 1
34、1 1 1 1 44 44 44 44 44 44 44 44 45 45 45 45 45 45 45 45 G.6 Protocol error (e.g. unknown message) class 145 G.6.1 Cause #96 “mandatory information element is missing“ . 145 G.6.2 Cause “97 “message type non-existent or not implemented“ 145 G.6.3 Cause #98 “message not compatible with call state or m
35、essages TYPE NON-EXISTENT OR NOT IMPLEMENTED“ . 145 G.6.4 Cause #99 “information element non-existent or not implemented“ 145 G.6.5 Cause #lo0 “invalid information element contents“ 145 G.6.6 Cause #lo1 “message not compatible with call start“ 145 G.6.7 Cause #lo2 “recovery on timer expiry“ 145 G.6.
36、8 Cause #111 “protocol error. unspecified“ . 146 G.7 Interworking class . 146 G.7.1 Cause #127 “interworking. unspecified“ . 146 ANNEX H (Informative): Examples of information elements coding 146 H.1 Bearer capability information element . i . 146 H.1.1 Coding for speech 146 H.1.2 Codingfor3.1 kHzau
37、dio . 146 H . 1.3 Coding for unrestricted digital information 147 H.1.4 Coding for case B X.31 packet mode access connections 147 H. 2 Channel identification information element . 148 H.2.1 Basic interface. circuit mode. B-channel 148 H.2.2 Primary rate interface. circuit mode. B-channel . 148 H.2.3
38、 Primary rate interface. circuit mode. HO-channel 149 networks) . 151 H.2.4,l Basic interface. circuit mode. 2x64 kbit/s bearer service 151 H.2.4.2 151 H.3 Called/calling party subaddress information element . 152 H.3.1 Coding of IA5 subaddress digits . 152 Annex I (Normative): Use of progress indic
39、ators 152 Annex J (Normative): Examples of cause value and location for busy condition . 153 H.2.4 Channel selection for the support of the 2x64 kbit/s bearer service (ETSI Primary rate interface. circuit mode. 2x64 kbit/s bearer service - 3404583 0024850 T = I Page 9 ETS 300 102-1 Annex K (Normativ
40、e): Message segmentation procedures 155 K.1 Introduction . 155 K.2 Message segmentation 155 K.3 Reassembly of segmented messages . 155 Annex L (Normative): Low layer information coding principles . 164 L.1 Purpose 164 L.2 Principles . 164 L.2.1 Definitions of types of information . 164 L.2.2 Examina
41、tion by the network . 164 L.2.3 Location of type I information 164 L.2.4 Location of types II and III information . 164 L.2.5 Relationship between bearer capability and low layer compatibility information elements 165 L.3 Information classification . 165 L.3.1 Examples for search and 3.1 kHz audio b
42、earer services 165 L.3.2 Examples for 64 kbit/s UD1 circuit mode bearer service 165 L.3.3 Examples for ISDN virtual-circuit bearer service . 166 L.4 Scenarios outside the scope of ISDN standardization . 168 L.4.1 Examples for speech and 3.1 kHz audio bearer services . 168 L.4.2 Examples for 64 kbit/
43、s UD1 circuit mode bearer services . 168 Annex M (Normative): Low layer compatibility negotiation . 169 M.1 General 169 M.2 Low layer capability notification to the called user 169 M.3 Low layer capability negotiation between users 169 M.4 Low layer compatibility negotiation options . 169 acceptance
44、 170 Annex N (Normative): Procedures for establishment of bearer connection prior to call N.1 General 170 N.2 Procedures 170 Annex O (Informative): Optional procedures for bearer service change . 170 Annex P (Informative): Formal Definitions for the Facility information element 171 Appendix I (Infor
45、mative) : Usage of cause values 173 Appendix II (Informative): Appendix III (Informative) : Example message flow diagrams and example of assigned information element identifier conditions for cause . 182 and message type series of ETSs . 182 FI 3404583 0024851 2i E Page 10 ETS 300 102-1 Blank page 3
46、404583 0024852 3 W Page 11 ETS 300 102-1 Foreword This European Telecommunications Standard (ETSI was produced by the Signalling, Protocols and Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI), and was adopted, having passed through the ETSI standards
47、 approval procedure. This document is part 1 of a multi-part ETS, comprised as follow: ETC 300 102-1 : ISDN; User-network interface layer 3; Specifications for basic call control. ETC 300 102-2: ISDN; User-network interface layer 3; Specifications for basic call control; Specification Description La
48、nguage (SDLI diagrams. This ETC is based on CCITT Blue book: 19881 Recommendation 0.931 and provides modifications and further requirements to this base document. t this ETS, deviations from CCITT Recommendation 0.931 are indicated by means of either II or “e+w and (b) the information processing and
49、 actions that take place at the user side and the network side. Qwwhm+d Detailed SDL diagrams for call control of circuit switched calls are contained in Throughout this references are made to access significance, .e. relevant in the originating and terminating access, but not in the network; dual significance, .e. relevant in either the originating or the terminating access and in the network; or, global significance, .e. relevant in the originating and terminating access and in the network. b) a table listing the codeset O information elements in the o
