1、 ETSI EN 300 356-22 V1.1.1 (2003-07)European Standard (Telecommunications series) Integrated Services Digital Network (ISDN);Signalling System No.7 (SS7);ISDN User Part (ISUP) version 4 for the international interface;Part 22: International EmergencyPreference Scheme (IEPS) serviceITU-T Amendments (
2、2002) to Q.761 - Q.764 (1999) modifiedETSI ETSI EN 300 356-22 V1.1.1 (2003-07) 2 Reference DEN/SPAN-130304 Keywords emergency, endorsement, ISDN, ISUP, service, SS7 ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562
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8、-22 V1.1.1 (2003-07) 3 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314:
9、 “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no
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11、tandard (Telecommunications series) has been produced by ETSI Technical Committee Services and Protocols for Advanced Networks (SPAN). The present document is part 22 of a multi-part deliverable covering the ISDN User Part (ISUP) version 4 for the international interface, as identified below: Part 1
12、: “Basic services ITU-T Recommendations Q.761 to Q.764 (1999) modified“; Part 2: “ISDN supplementary service ITU-T Recommendation Q.730 (1999) modified“; Part 3: “Calling Line Identification Presentation (CLIP) supplementary service ITU-T Recommendation Q.731, clause 3 (1993) modified“; Part 4: “Cal
13、ling Line Identification Restriction (CLIR) supplementary service ITU-T Recommendation Q.731, clause 4 (1993) modified“; Part 5: “Connected Line Identification Presentation (COLP) supplementary service ITU-T Recommendation Q.731, clause 5 (1993) modified“; Part 6: “Connected Line Identification Rest
14、riction (COLR) supplementary service ITU-T Recommendation Q.731, clause 6 (1993) modified“; Part 7: “Terminal Portability (TP) supplementary service ITU-T Recommendation Q.733, clause 4 (1993) modified“; Part 8: “User-to-User Signalling (UUS) supplementary service ITU-T Recommendation Q.737, clause
15、1 (1997) modified“; Part 9: “Closed User Group (CUG) supplementary service ITU-T Recommendation Q.735, clause 1 (1993) modified“; Part 10: “Subaddressing (SUB) supplementary service ITU-T Recommendation Q.731, clause 8 (1992) modified“; Part 11: “Malicious Call Identification (MCID) supplementary se
16、rvice ITU-T Recommendation Q.731, clause 7 (1997) modified“; Part 12: “Conference call, add-on (CONF) supplementary service ITU-T Recommendation Q.734, clause 1 (1993) and implementors guide (1998) modified“; Part 14: “Explicit Call Transfer (ECT) supplementary service ITU-T Recommendation Q.732, cl
17、ause 7 (1996) and implementors guide (1998) modified“; Part 15: “Diversion supplementary service ITU-T Recommendation Q.732, clauses 2 to 5 (1999) modified“; Part 16: “Call Hold (HOLD) supplementary service ITU-T Recommendation Q.733, clause 2 (1993) modified“; Part 17: “Call Waiting (CW) supplement
18、ary service ITU-T Recommendation Q.733, clause 1 (1992) modified“; ETSI ETSI EN 300 356-22 V1.1.1 (2003-07) 4 Part 18: “Completion of Calls to Busy Subscriber (CCBS) supplementary service ITU-T Recommendation Q.733, clause 3 (1997) modified“; Part 19: “Three-Party (3PTY) supplementary service ITU-T
19、Recommendation Q.734, clause 2 (1996) and implementors guide (1998) modified“; Part 20: “Completion of Calls on No Reply (CCNR) supplementary service ITU-T recommendation Q.733, clause 5 (1999) modified“; Part 21: “Anonymous Call Rejection (ACR) supplementary service ITU-T Recommendation Q.731, clau
20、se 4 (1993)“; Part 22: “International Emergency Preference Scheme (IEPS) service ITU-T Amendments (2002) to Q.761 - Q.764 (1999) modified“; Part 31: “Protocol Implementation Conformance Statement (PICS) proforma specification for basic services“; Part 32: “Test Suite Structure and Test Purposes (TSS
21、 Part 33: “Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services“; Part 34: “Protocol Implementation Conformance Statement (PICS) proforma specification for supplementary services“; Part 35: “Test Suite Structure
22、 and Test Purposes (TSS Part 36: “Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for supplementary services“. The present document details the stage three aspects (signalling system protocols and switching functions) needed
23、to support the International Emergency Preference Scheme (IEPS) service. The stage 1 aspects are detailed in ITU-T Recommendation E.106 1. National transposition dates Date of adoption of this EN: 27 June 2003 Date of latest announcement of this EN (doa): 30 September 2003 Date of latest publication
24、 of new National Standard or endorsement of this EN (dop/e): 31 March 2004 Date of withdrawal of any conflicting National Standard (dow): 31 March 2004 Endorsement notice The elements of ITU-T Amendment 2 to Q.761, Amendment 1 to Q.762, Amendment 2 to 763 and Amendment 2 to Q.764 apply with the foll
25、owing modifications. ETSI ETSI EN 300 356-22 V1.1.1 (2003-07) 5 Global modifications to ITU-T Amendments to Q.761 - Q.764 Insert the following two clauses (Scope and References). Scope The present document specifies the signalling protocol and switching aspects of the International Emergency Prefere
26、nce Scheme (IEPS) service for the pan-European Integrated Services Digital Network (ISDN) as provided by the European public telecommunications operators by means of the Signalling System No.7 protocol for the ISDN User Part (ISUP). The present document does not specify the additional protocol requi
27、rements where the service is provided to the user via a telecommunications network that is not an ISDN. The present document does not specify the additional protocol requirements for the national signalling interface. NOTE 1: If the implementation of a signalling system in a national network conflic
28、ts with measures described here the international gateway of the network is expected to provide the interworking between the two. Although the present document applies only to the international interconnection, the specification of functions, formats and codes of messages and signals, and actions pe
29、rformed at originating and destination local exchanges are retained. Formats, codes and procedures marked for national use are included for informative purposes for the international interface specification. If these items so marked are supported within a national network and operators network, then
30、 it is proposed that they shall be supported in this manner. NOTE 2: In the case where a national signalling system behaves differently, the international gateway exchange is to support both the concerned national and international network. The IEPS service provides the calling party with preferenti
31、al treatment during call and connection setup. The IEPS service is applicable to all international circuit switched telecommunication services. References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are e
32、ither specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the
33、expected location might be found at http:/docbox.etsi.org/Reference. 1 ITU-T Recommendation E.106 (2000) “Description of an international emergency preference scheme (IEPS)“ 2 ETSI ETS 300 121 (Edition 1): “Integrated Services Digital Network (ISDN); Application of the ISDN User Part (ISUP) of CCITT
34、 Signalling System No.7 for international ISDN interconnections (ISUP version 1)“. 3 ETSI EN 300 356-1: “Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 1: Basic services ITU-T Recommendations Q.761 to Q.
35、764 (1999) modified“. ETSI ETSI EN 300 356-22 V1.1.1 (2003-07) 6 Specific modifications to ITU-T Amendments to Q.761 - Q.764 (12/99) Amendment 2 to ITU-T Recommendation Q.761 is endorsed without any modifications. Amendment 1 to ITU-T Recommendation Q.762 is endorsed without any modifications. Amend
36、ment 2 to ITU-T Recommendation Q.763 is endorsed without any modifications. Amendment 2 to ITU-T Recommendation Q.764 is endorsed with the following modifications. In all chapters on Actions required at an outgoing, intermediate or incoming international exchange: in the first sentence the phrase “c
37、all establishment proceeds with priority“ is improved to read “call and connection establishment proceeds with priority“; in the second paragraph the phrase “the call is queued and shall take precedence over any other normal call attempts“ is replaced by “then the call is placed at the top of the ca
38、ll handling queue in the exchange. The priority calls queued shall take priority over any other call handling for the next free trunk from that exchange. For that purpose the exchange continually tries to find a suitable outgoing trunk until call establishment is discontinued. The calls in the queue
39、 are handled in the order of “first come, first served“. The size of the queue is configurable according to traffic management“; in the first sentence of the third paragraph the first word “Optionally“ is deleted and the words “may be“ are replaced by the word “is“; the first sentence of the third p
40、aragraph is continued with the words “indicating that the call request has been put into a waiting queue for priority call setup“; after the first sentence of the third paragraph the following sentence is inserted: “The parameter may be used at the originating exchange to play tones and/or announcem
41、ents to the calling subscriber.“; at the end of the third paragraph the following sentence is attached: “If call and connection establishment does not succeed they are released on expiry of T9 (answer supervision timer).“ The resulting modifications to the Amendment 2 of ITU-T Recommendation Q.764 a
42、re as follows: NOTE: Underlining and/or strike-out are used to highlight detailed modifications. 2.1.1.3 Actions required at an outgoing international exchange Amend the following e) International Emergency Preference Scheme If an outgoing international exchange receives information from the nationa
43、l network that the call is to be treated as an IEPS call (e.g. CPC value of IEPS), call and connection establishment proceeds with priority. The call is established with the CPC set as IEPS call marking in the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP S
44、ignalling Congestion Control, Automatic Congestion Control, Hard-to-Reach procedure) are not applied to this call. If routeing procedures fail to find an outgoing circuit, the call is queued and shall take precedence over any other normal call attempts. then the call is placed at the top of the call
45、 handling queue in the exchange. The priority calls queued shall take priority over any other call handling for the next free trunk from that exchange. For that purpose the exchange continually tries to find a suitable outgoing trunk until call establishment is discontinued. The calls in the queue a
46、re handled in the order of “first come, first served“. The size of the queue is configurable according to traffic management. ETSI ETSI EN 300 356-22 V1.1.1 (2003-07) 7 Optionally,If queuing occurs, an early ACM (called party status set to “no indication“) with the inclusion of the generic notificat
47、ion parameter set to “call completion delay“ may be is returned to the originating exchange indicating that the call request has been put into a waiting queue for priority call setup. The parameter may be used at the originating exchange to play tones and/or announcements to the calling subscriber.
48、However if the incoming IAM had requested continuity check (either on this circuit or a previous circuit), the early ACM (no indication) shall not be sent until a successful continuity indication has been received. If call and connection establishment does not succeed they are released on expiry of
49、T9 (answer supervision timer). 2.1.1.3 Actions required at an intermediate international exchange Amend the following e) International Emergency Preference Scheme If an intermediate international exchange receives a call with CPC set to IEPS, the call and connection establishment proceeds with priority. The call is established with the CPC set as IEPS call marking in the outgoing IAM. Restrictive network management controls (e.g. Automatic Call Gapping, ISUP Signalling Congestion Control, Automatic Congest
