1、Reference number ISO/IEC 11572:2000(E) ISO/IEC 2000 INTERNATIONAL STANDARD ISO/IEC 11572 Third edition 2000-03-15 Information technology Telecommunications and information exchange between systems Private Integrated Services Network Circuit mode bearer services Inter-exchange signalling procedures a
2、nd protocol Technologies de linformation Tlcommunications et change dinformation entre systmes Rseau priv intgration de services Services porteurs en mode circuit Procdures et protocole de signalisation dinterchangeISO/IEC 11572:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In
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5、 printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2000 All rights reserved. Unless otherwise specified, no part
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7、 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO/IEC 2000 All rights reservedISO/IEC 11572:2000(E) ISO/IEC 2000 All rights reserved iii Contents Page Foreword vii Introduction viii 1 Scope 1 2 Conformance 1 3 Normativ
8、e references 1 4 Terms and definitions 1 5 List of acronyms 3 6 General principles 3 6.1 Protocol model 4 6.2 Services provided to Call Control 4 6.3 Services required of the Signalling Carriage Mechanism 5 7 Protocol Control states 5 7.1 States for circuit-mode Call Control 5 7.1.1 Null State (0) 5
9、 7.1.2 Call Initiated (1) 5 7.1.3 Overlap Sending (2) 5 7.1.4 Outgoing Call Proceeding (3) 5 7.1.5 Call Delivered (4) 5 7.1.6 Call Present (6) 5 7.1.7 Call Received (7) 5 7.1.8 Connect Request (8) 5 7.1.9 Incoming Call Proceeding (9) 6 7.1.10 Active (10) 6 7.1.11 Disconnect Request (11) 6 7.1.12 Dis
10、connect Indication (12) 6 7.1.13 Release Request (19) 6 7.1.14 Overlap Receiving (25) 6 7.2 States for layer management 6 7.2.1 Null State (Rest 0) 6 7.2.2 Restart Request (Rest 1) 6 7.2.3 Restart (Rest 2) 6 8 Call Control 6 8.1 States for Transit PINX Call Control 7 8.1.1 TCC_Idle (0) 7 8.1.2 TCC_A
11、wait Digits (1) 7 8.1.3 TCC_Await Additional Digits (2) 7 8.1.4 TCC_Overlap (3) 7 8.1.5 TCC_Incoming Call Proceeding (4) 7 8.1.6 TCC_Transit Call Proceeding (5) 7 8.1.7 TCC_Call Alerting (6) 7 8.1.8 TCC_Call Active (7) 7 8.1.9 TCC_Await Incoming Release (8) 7 8.1.10 TCC_Await Outgoing Release (9) 7
12、8.1.11 TCC_Await Two-Way Release (10) 7 8.1.12 TCC_Await Incoming Disconnect (11) 7ISO/IEC 11572:2000(E) iv ISO/IEC 2000 All rights reserved 8.1.13 TCC_Await Outgoing Disconnect (12) 7 8.1.14 TCC_Await Two-Way Disconnect (13) 8 9 General procedures 8 9.1 Use of the services of Signalling Carriage Me
13、chanism 8 9.1.1 Establishment of a Signalling Carriage Mechanism connection 8 9.1.2 Transfer of data 8 9.1.3 Signalling Carriage Mechanism reset 8 9.1.4 Signalling Carriage Mechanism failure 8 9.2 Handling of protocol error conditions 8 9.2.1 Protocol discriminator error 8 9.2.2 Message too short 8
14、9.2.3 Call reference error 8 9.2.4 Message type or message sequence errors 9 9.2.5 General information element errors 9 9.2.6 Mandatory information element errors 10 9.2.7 Non-mandatory information element errors 10 9.2.8 Signalling Carriage Mechanism reset 11 9.2.9 Signalling Carriage Mechanism fai
15、lure 11 9.3 Status and status enquiry protocol procedures 12 9.3.1 Status enquiry procedure 12 9.3.2 Receiving a STATUS message 12 10 Circuit-switched Call Control procedures 14 10.1 Call establishment 14 10.1.1 Call request 14 10.1.2 Information channel selection 15 10.1.3 Overlap sending 15 10.1.4
16、 Call proceeding 16 10.1.5 Call confirmation indication 17 10.1.6 Call connected 17 10.1.7 Use of the PROGRESS message 17 10.1.8 Failure of call establishment 18 10.2 Call clearing 18 10.2.1 Terminology 18 10.2.2 Exception conditions 18 10.2.3 Clearing 19 10.2.4 Clear collision 19 10.3 Call collisio
17、ns 19 10.4 Transit PINX Call Control requirements 19 10.4.1 Receipt of address information 20 10.4.2 State TCC_Await_Digits 20 10.4.3 State TCC_Await_Additional_Digits 21 10.4.4 State TCC_Overlap 22 10.4.5 Channel through connection procedures 22 10.4.6 State TCC_Incoming_Call_Proceeding 23 10.4.7 S
18、tate TCC_Transit_Call_Proceeding 23 10.4.8 State TCC_Call_Alerting 24 10.4.9 State TCC_Call_Active 24 10.4.10 Call clearing at a Transit PINX 24 10.4.11 Handling of Basic Call information elements at a Transit PINX 25ISO/IEC 11572:2000(E) ISO/IEC 2000 All rights reserved v 10.5 Originating PINX Call
19、 Control requirements 26 10.5.1 Transmission of the SETUP message 26 10.5.2 Agreement of the information channel 27 10.5.3 Receipt of Progress indicators 27 10.5.4 Receipt of ALERTING message 27 10.5.5 Receipt of CONNECT message 27 10.5.6 Call clearing initiated by the Originating PINX 27 10.5.7 Rec
20、eipt of an indication of call clearing 27 10.6 Terminating PINX Call Control requirements 28 10.6.1 Receipt of the SETUP message 28 10.6.2 Transmission of ALERTING message 28 10.6.3 Transmission of Progress indicators 28 10.6.4 Transmission of CONNECT message 28 10.6.5 Call clearing initiated by the
21、 Terminating PINX 29 10.6.6 Receipt of an indication of call clearing 29 10.7 Incoming Gateway PINX Call Control requirements 29 10.7.1 Transmission of the SETUP message 29 10.7.2 Interworking indications in the SETUP Message 30 10.7.3 Agreement of the information channel 30 10.7.4 Receipt of Progre
22、ss indicators 30 10.7.5 Receipt of ALERTING message 30 10.7.6 Receipt of CONNECT message 30 10.7.7 Call clearing initiated by the Incoming Gateway PINX 31 10.7.8 Receipt of an indication of call clearing 31 10.8 Outgoing Gateway PINX Call Control requirements 31 10.8.1 Receipt of the SETUP message 3
23、1 10.8.2 Connection of the information channel 32 10.8.3 Transmission of interworking indications 32 10.8.4 Transmission of ALERTING message 32 10.8.5 Transmission of CONNECT message 32 10.8.6 Call clearing initiated by the Outgoing Gateway PINX 33 10.8.7 Receipt of an indication of call clearing 33
24、 11 Procedures for layer management 33 11.1 Restart procedures 33 11.1.1 Sending RESTART 33 11.1.2 Receipt of RESTART 34 11.1.3 Restart collision 34 12 Protocol timers 35 13 Functional definition of messages 36 13.1 Messages for general procedures 37 13.1.1 STATUS 37 13.1.2 STATUS ENQUIRY 37 13.2 Me
25、ssages for Circuit Mode Call Control 38 13.2.1 ALERTING 38 13.2.2 CALL PROCEEDING 38 13.2.3 CONNECT 38 13.2.4 CONNECT ACKNOWLEDGE 39 13.2.5 DISCONNECT 39 13.2.6 INFORMATION 39 13.2.7 PROGRESS 39 13.2.8 RELEASE 40 13.2.9 RELEASE COMPLETE 40ISO/IEC 11572:2000(E) vi ISO/IEC 2000 All rights reserved 13.
26、2.10 SETUP 40 13.2.11 SETUP ACKNOWLEDGE 41 13.3 Messages for layer management 41 13.3.1 RESTART 41 13.3.2 RESTART ACKNOWLEDGE 41 14 General message format and coding of information elements 41 14.1 Overview 42 14.2 Protocol discriminator 42 14.3 Call reference 43 14.4 Message type 44 14.5 Other info
27、rmation elements for Basic Call control (codeset 0) 44 14.5.1 Coding rules 44 14.5.2 Extension of codesets 46 14.5.3 Locking shift procedure 47 14.5.4 Non-locking shift procedure 47 14.5.5 Bearer capability 48 14.5.6 Call state 50 14.5.7 Called party number 51 14.5.8 Called party subaddress 52 14.5.
28、9 Calling party number 53 14.5.10 Calling party subaddress 53 14.5.11 Cause 54 14.5.12 Channel identification 57 14.5.13 Connected number 60 14.5.14 Connected subaddress 60 14.5.15 High layer compatibility (layers 4-7) 61 14.5.16 Low layer compatibility (layers 1-3) 61 14.5.17 Progress indicator 61
29、14.5.18 Restart indicator 62 14.5.19 Sending complete 63 14.6 Information elements of codeset 5 63 Annex A (normative) Protocol Implementation Conformance Statement (PICS) for ISO/IEC 11572 64 Annex B (informative) Use of the cause information element 75 Annex C (informative) Examples of message seq
30、uences 78 Annex D (informative) Manufacturer specific information 82 Annex E (informative) SDL diagram for the procedures over a symmetrical link between two peer PINXs 83 Annex F (informative) SDL diagram for the procedures on either side of a Transit-PINX 104 Annex G (informative) Bibliography 120
31、 Annex ZA (normative) Segmentation and reassembly procedures 121 Annex ZB (normative) Additional progress descriptions 131 Annex ZC (normative) Party category functionality 135ISO/IEC 11572:2000(E) ISO/IEC 2000 All rights reserved vii Foreword ISO (the International Organization for Standardization)
32、 and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal
33、 with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. International Standards are drafted in accordance w
34、ith the rules given in the ISO/IEC Directives, Part 3. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
35、an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all
36、 such patent rights. International Standard ISO/IEC 11572 was prepared by ECMA (as ECMA-143) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. This third editio
37、n cancels and replaces the second edition (ISO/IEC 11572:1997), which has been technically revised. Annexes A, ZA, ZB and ZC form a normative part of this International Standard. Annexes B to G are for information only.ISO/IEC 11572:2000(E) viii ISO/IEC 2000 All rights reserved Introduction This Int
38、ernational Standard is one of a series of standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series uses ISDN concepts as developed by ITU-T and conforms to the framework of International Standards for Open Systems Interconnection as
39、defined by ISO/IEC. This International Standard defines the signalling protocol for use at the Q-reference point in support of bearer circuit-switched services. The protocol defined in this International Standard forms part of the PSS1 protocol (informally known as QSIG). This International Standard
40、 is based upon the practical experience of ECMA member companies and the results of their active and continuous participation in the work of ISO/IEC JTC1, ITU-T, ETSI and other international and national standardization bodies. It represents a pragmatic and widely based consensus.INTERNATIONAL STAND
41、ARD ISO/IEC 11572:2000(E) ISO/IEC 2000 All rights reserved 1 Information technology Telecommunications and information exchange between systems Private Integrated Services Network Circuit mode bearer services Inter-exchange signalling procedures and protocol 1S c o p e This International Standard de
42、fines the signalling procedures and protocol for the purpose of circuit-switched Call Control at the Q-reference point between Private Integrated Network Exchanges (PINXs) connected together within a Private Integrated Services Network (PISN). The Q reference point is defined in ISO/IEC 11579-1. Thi
43、s International Standard is based upon that described in ITU-T Recommendation Q.931, including the provisions for symmetrical operation described in annex D of that recommendation. Service specifications are produced in three stages and according to the method specified in ETS 300 387. This Internat
44、ional Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ECMA-142, ECMA-148 and ISO/IEC 11584. This International Standard is applicable to PINXs which interconnect to form a PISN. Annex ZC is a
45、n integral part of this International Standard. 2 Conformance In order to conform to this International Standard, a PINX shall satisfy the requirements identified in the Protocol Implementation Conformance Statement (PICS) proforma in annex A. 3 Normative references The following normative documents
46、 contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged
47、 to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO/IEC 888
48、6:1996, Information technology Open Systems Interconnection Data link service definition. ISO/IEC 11571:1998, Information technology Telecommunications and information exchange between systems Private Integrated Services Network Addressing. ISO/IEC 11579-1:1994, Information technology Telecommunicat
49、ions and information exchange between systems Private Integrated Services Network Part 1: Reference configuration for PISN exchanges (PINX). ETS 300 387:1994, Private Telecommunication Network (PTN); Method for the specification of basic and supplementary services. ITU-T Rec. E.164:1991, Numbering plan for the ISDN era. CCITT Rec. I.330:1988, ISDN numbering and addressing principles (Blue Book). ITU-T Rec. Q.931:1993, ISDN user-network interface layer 3 specification for basic call control. CCITT R
