1、 Standard ECMA-300 2nd Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Single Step Call Transfer Supplementary Service Phone: +41 22 849.60.00 - Fax: +41 22 849.60.01 - URL: http:/www.ecma.c
2、h - Internet: helpdeskecma.ch . Standard ECMA-300 2nd Edition - December 2001 Standardizing Information and Communication Systems Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Single Step Call Transfer Supplementary Service (QSIG-SSCT) Phone: +41 22 849.60.00 - Fa
3、x: +41 22 849.60.01 - URL: http:/www.ecma.ch - Internet: helpdeskecma.ch IW Ecma-300.doc 15-01-02 08,38 . Brief History This Standard is one of a series of ECMA Standards defining services and signalling protocols applicable to Private Integrated Services Networks (PISNs). The series uses ISDN conce
4、pts as developed by ITU-T and conforms to the framework of International Standards for Open Systems Interconnection as defined by ISO/IEC. This particular Standard specifies the signalling protocol for use at the Q reference point in support of the Call Transfer supplementary service. The protocol d
5、efined in this Standard forms part of the PSS1 protocol (informally known as QSIG). This Standard 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
6、 standardization bodies. It represents a pragmatic and widely based consensus. Compared to the 1st Edition of Standard ECMA-300 (published by ECMA in February 2000), this 2nd Edition incorporates migration to ASN.1 version 1997 as well as changes in order to achieve complete alignment with Internati
7、onal Standard ISO/IEC 19460:2001(E) published by ISO/IEC in May 2001. Adopted as 2nd Edition of Standard ECMA-300 by the General Assembly in December 2001. . - i - Table of contents 1 Scope 1 2 Conformance 1 3 References (normative) 1 4 Definitions 2 4.1 External definitions 2 4.2 Other definitions
8、3 4.2.1 Rerouting number 3 4.2.2 Rerouting PINX 3 4.2.3 Transferred PINX 3 4.2.4 Transferred-To PINX 3 4.2.5 Transferring PINX 3 5 Acronyms 3 6 Signalling protocol for the support of SS-SSCT 4 6.1 SS-SSCT description 4 6.2 SS-SSCT operational requirements 4 6.2.1 Provision/Withdrawal 4 6.2.2 Require
9、ments on a Transferring PINX 4 6.2.3 Requirements on a Rerouting PINX 4 6.2.4 Requirements on a Transferred PINX 4 6.2.5 Requirements on a Transferred-To PINX 4 6.2.6 Requirements on a Transit PINX 4 6.3 SS-SSCT coding requirements 5 6.3.1 Operations 5 6.3.2 Information elements 7 6.3.3 Messages 7 6
10、.4 SS-SSCT state definitions 8 6.4.1 States at a Transferring PINX 8 6.4.2 States at a Rerouting PINX 8 6.4.3 States at a Transferred PINX 8 6.4.4 States at a Transferred-To PINX 8 6.5 SS-SSCT signalling procedures 8 6.5.1 Actions at a Transferring PINX 9 6.5.2 Procedures at the Rerouting PINX 9 6.5
11、.3 Actions at a Transferred PINX 12 6.5.4 Actions at a Transferred-To PINX 12 6.5.5 Actions at a Transit PINX 12 6.5.6 Subsequent actions at Transferred and Transferred-To PINX 12 6.6 SS-SSCT impact of interworking with public ISDNs 12 - ii - 6.6.1 Actions at a Gateway PINX 12 6.7 SS-SSCT impact of
12、interworking with non-ISDNs 13 6.7.1 Actions at a Gateway PINX 13 6.8 Protocol Interactions between SS-SSCT and other supplementary services and ANFs 13 6.8.1 Calling Name Identification Presentation (SS-CNIP) 13 6.8.2 Connected Name Identification Presentation (SS-CONP) 13 6.8.3 Completion of Calls
13、 to Busy Subscribers (SS-CCBS) 14 6.8.4 Completion of Calls on No Reply (SS-CCNR) 14 6.8.5 CallForwarding Unconditional (SS-CFU) 14 6.8.6 Call Forwarding Busy (SS-CFB) 14 6.8.7 Call Forwarding No Reply (SS-CFNR) 14 6.8.8 Call Deflection (SS-CD) 15 6.8.9 Call Transfer (SS-CT) 15 6.8.10 Path Replaceme
14、nt (ANF-PR) 15 6.8.11 Advice Of Charge (SS-AOC) 16 6.8.12 Call Offer (SS-CO) 17 6.8.13 Do Not Disturb (SS-DND) 17 6.8.14 Do Not Disturb Override (SS-DNDO) 17 6.8.15 Recall (SS-RE) 17 6.8.16 Call Intrusion (SS-CI) 17 6.8.17 Call Interception (ANF-CINT) 17 6.8.18 Transit Counter (SS-TC) 18 6.8.19 Rout
15、e Restriction Class (ANF-RRC) 18 6.8.20 Authentication of the PISN (SS-WTAN) 18 6.8.21 Authentication of a WTM user (SS-WTAT) 18 6.8.22 Wireless Terminal Location Registration (SS-WTLR) 18 6.8.23 Wireless Terminal Mobility Incoming Call (ANF-WTMI) 18 6.8.24 Wireless Terminal Mobility Outgoing Call (
16、ANF-WTMO) 18 6.8.25 Message Waiting Indication (SS-MWI) 18 6.8.26 User Mobility Incoming Call (ANF-PUMI) 18 6.8.27 User Mobility Outgoing Call (ANF-PUMO) 18 6.8.28 Private User Mobility - Registration (SS-PUMR) 18 6.8.29 Common Information (ANF-CMN) 18 6.8.30 Call Priority Interruption (Protection)
17、(SS-CPI(P) 18 6.9 SS-SSCT Parameter values (Timers) 19 6.9.1 Timer T1 19 6.9.2 Timer T2 19 6.9.3 Timer T3 19 Annex A - Protocol Implementation Conformance Statement (PICS) proforma 21 Annex B - Imported ASN.1 definitions 31 Annex C - Examples of message sequences 33 Annex D - Specification and Descr
18、iption Language (SDL) representation of procedures 39 - iii - Annex E - Additional feature identifier in module Common-Information-Operations 49 Annex F - Difference between Single Step Call Transfer and Call Transfer by Rerouting 51 Annex G - ASN.1 definitions according to ITU-T Recs. X.208 / X.209
19、 53 - iv - . 1 Scope This Standard specifies the signalling protocol for the support of the Single Step Call Transfer supplementary service (SS-SSCT) at the Q reference point between Private Integrated Network services eXchanges (PINXs) connected together within a Private Integrated Services Network
20、 (PISN). SS-SSCT is a supplementary service which enables a user, user A, to transform an existing call between user A and user B into a new call between user B and a user C whereby user A does not have a call established with user C prior to call transfer. The Q reference point is defined in ECMA-1
21、33. Service specifications are produced in three stages and according to the method specified in ETS 300 387. This 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-299. The signalling pro
22、tocol for SS-SSCT operates on top of the signalling protocol for basic circuit switched call control, as specified in ECMA-143, and uses certain aspects of the generic procedures for the control of supplementary services specified in ECMA-165. This Standard also specifies additional signalling proto
23、col requirements for the support of interactions at the Q reference point between Single Step Call Transfer and other supplementary services and ANFs. This Standard is applicable to PINXs which can interconnect to form a PISN. 2 Conformance In order to conform to this Standard, a PINX shall satisfy
24、the requirements identified in the Protocol Implementation Conformance Statement (PICS) proforma in annex A. Conformance to this Standard includes conforming to those clauses that specify protocol interactions between SS-SSCT and other supplementary services and ANFs for which signalling protocols a
25、t the Q reference point are supported in accordance with the stage 3 standards concerned. 3 References (normative) The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. All standards are subject to revision, and parties to agreement
26、s based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. In the case of references to ECMA Standards that are aligned with ISO/IEC International Standards, the number of the appropriate ISO/IEC International Standar
27、d is given in brackets after the ECMA reference. ECMA-133 Private Integrated Services Network (PISN) - Reference Configuration for PISN Exchanges (PINX) (International Standard ISO/IEC 11579-1) ECMA-142 Private Integrated Services Network (PISN) - Circuit Mode 64kbit/s Bearer Services - Service Desc
28、ription, Functional Capabilities and Information Flows (International Standard ISO/IEC 11574) ECMA-143 Private Integrated Services Network (PISN) - Circuit Mode Bearer Services - Inter-Exchange Signalling Procedures and Protocol (International Standard ISO/IEC 11572) ECMA-155 Private Integrated Serv
29、ices Networks - Addressing (International Standard ISO/IEC 11571) ECMA-164 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Name Identification Supplementary Services (International Standard ISO/IEC 13868) ECMA-165 Private Integrated Services Network (PISN) - Generic
30、 Functional Protocol for the Support of Supplementary Services - Inter-Exchange Signalling Procedures and Protocol (International Standard ISO/IEC 11582) - 2 - ECMA-174 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Diversion Supplementary Services (Internatio
31、nal Standard ISO/IEC 13873) ECMA-176 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Path Replacement Additional Network Feature (International Standard ISO/IEC 13874) ECMA-178 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Tr
32、ansfer Supplementary Service (International Standard ISO/IEC 13869) ECMA-212 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Advice of Charge Supplementary Services (International Standard ISO/IEC 15050) ECMA-221 Private Integrated Services Network (PISN) - Inter-Ex
33、change Signalling Protocol - Call Interception Additional Network Feature (International Standard ISO/IEC 15054) ECMA-225 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Transit Counter Additional Network Feature (International Standard ISO/IEC 15056) ECMA-251 Priva
34、te Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Common Information Additional Network Feature (International Standard ISO/IEC 15772) ECMA-264 Private Integrated Services Network (PISN) - Inter-Exchange Signalling Protocol - Call Priority Interruption and Call Priority In
35、terruption Protection Supplementary Services (International Standard ISO/IEC 15992) ECMA-299 Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Single Step Call Transfer Supplementary Service ETS 300 387 Private Telecommunication Network (PTN); Metho
36、d for the specification of basic and supplementary services (1994) ITU-T Rec. I.112 Vocabulary of terms for ISDNs (1993) ITU-T Rec. I.210 Principles of telecommunication services supported by an ISDN and the means to describe them (1993) ITU-T Rec. Q.950 Supplementary services protocols, structure a
37、nd general principles (2000) ITU-T Rec. Z.100 Specification and description language (1999) 4 Definitions For the purposes of this Standard, the following definitions apply. 4.1 External definitions This Standard uses the following terms defined in other documents: Application Protocol Data Unit (AP
38、DU) (ECMA-165) Basic Service (ITU-T Rec. I.210) Gateway PINX (ECMA-143) Complete Number (ECMA-155) Interpretation APDU (ECMA-165) Network Facility Extension (NFE) (ECMA-165) New Call, New Connection (ECMA-299) Original Call, Original Connection (ECMA-299) Originating PINX (ECMA-165) Private Integrat
39、ed Services Network (PISN) (ECMA-133) Private Integrated services Network eXchange (PINX) (ECMA-133) - 3 - Subsequent PINX (ECMA-165) Signalling (ITU-T Rec. I.112) Supplementary Service (ITU-T Rec. I.210) Supplementary Service Control Entity (ECMA-165) Terminating PINX (ECMA-165) Transit PINX (ECMA-
40、165) User (ECMA-142) User A, Transferring user (ECMA-299) User B, Transferred user (ECMA-299) User C, Transferred-to user (ECMA-299) 4.2 Other definitions 4.2.1 Rerouting number The number of the Transferred-to user. 4.2.2 Rerouting PINX A PINX on the call path of the original call, that reroutes th
41、at call to user C. This can either be the Transferring, the Transferred or a Transit PINX being capable of performing the rerouting function. 4.2.3 Transferred PINX The End PINX which is on the end of the original call nearest to user B. 4.2.4 Transferred-To PINX The End PINX which is on the end of
42、the new call nearest to user C. 4.2.5 Transferring PINX The End PINX which initiates single step call transfer procedures on behalf of user A. 5 Acronyms APDU Application Protocol Data Unit ASN.1 Abstract Syntax Notation no. 1 ISDN Integrated Services Digital Network NFE Network Facility Extension P
43、ICS Protocol Implementation Conformance Statement PINX Private Integrated services Network eXchange PISN Private Integrated Services Network SDL Specification and Description Language SS-SSCT Supplementary Service Single Step Call Transfer - 4 - 6 Signalling protocol for the support of SS-SSCT 6.1 S
44、S-SSCT description SS-SSCT is a supplementary service which enables a user, user A, to transform an existing call between user A and user B into a new call between user B and a user C whereby user A does not have a call established with user C prior to call transfer. This supplementary service is ap
45、plicable to all basic services defined in ECMA-142. 6.2 SS-SSCT operational requirements 6.2.1 Provision/Withdrawal Provision and withdrawal shall be in accordance with 6.2.1 of ECMA-299. 6.2.2 Requirements on a Transferring PINX The basic call procedures specified in ECMA-143 shall be supported. Ge
46、neric procedures for the call-related control of supplementary services, as specified in ECMA-165 for an End PINX, shall apply. 6.2.3 Requirements on a Rerouting PINX The basic call procedures specified in ECMA-143 shall be supported. Generic procedures for the call-related control of supplementary
47、services, as specified in ECMA-165 for an End PINX, shall apply. 6.2.4 Requirements on a Transferred PINX The basic call procedures specified in ECMA-143 shall be supported. Generic procedures for the call-related control of supplementary services, as specified in ECMA-165 for an End PINX, shall app
48、ly. 6.2.5 Requirements on a Transferred-To PINX The basic call procedures specified in ECMA-143 shall be supported. Generic procedures for the call-related control of supplementary services, as specified in ECMA-165 for an End PINX, shall apply. 6.2.6 Requirements on a Transit PINX The basic call pr
49、ocedures specified in ECMA-143 shall be supported. Generic procedures for the call-related control of supplementary services, as specified in ECMA-165 for a Transit PINX, shall apply. - 5 - 6.3 SS-SSCT coding requirements 6.3.1 Operations The operations defined in Abstract Syntax Notation number 1 (ASN.1) in table 1 shall apply. The notation is in accordance with ITU-T Rec. X.680 and X.690. The ITU-T Rec. X.208 and X.209 superseded version is in annex G. Table 1 - Operations in support of SS-SSCT Single-Step-Call-Transfer-Operations-asn1-97 is
