ITU-T I 251 6-1995 Connected Line Identification Restriction (COLR) - Integrated Services Digital Network (ISDN) - Service Capabilities (Study Group 1) 10 pp《连接线路识别显示(COLP) 综合业务数字网.pdf
《ITU-T I 251 6-1995 Connected Line Identification Restriction (COLR) - Integrated Services Digital Network (ISDN) - Service Capabilities (Study Group 1) 10 pp《连接线路识别显示(COLP) 综合业务数字网.pdf》由会员分享,可在线阅读,更多相关《ITU-T I 251 6-1995 Connected Line Identification Restriction (COLR) - Integrated Services Digital Network (ISDN) - Service Capabilities (Study Group 1) 10 pp《连接线路识别显示(COLP) 综合业务数字网.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、INTERNATIONAL TELECOMMUN ICATION UNION ITU=T TELECOMMUN ICATION STANDARDIZATION SECTOR OF ITU 1.251.6 INTEGRATED SERVICES DIGITAL NETWORK (ISDN) SERVICE CAPABILITIES (02/95) CONNECTED LINE IDENTIFICATION RESTRICTION (COLR) ITU-T Recommendation 1.251 -6 (Previously “CCITT Recommendation”) ITU-T RECMN
2、*I-251. b 75 = 48b2591 Ob00185 O72 FOREWORD The ITU-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (ITU). The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommen- dations on them with a view
3、to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendat
4、ions by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). ITU-T Recommendation 1.251.6 was revised by ITU-T Study Group 1 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 21st February 1995. NOTE In this
5、 Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1995 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechani
6、cal, including photocopying and microfilm, without permission in writing from the ITU. CONTENTS 1 Definition . 2 Description . 2.1 General description . 2.2 Specific terminology . 2.3 Qualification on the applicability to telecommunication services 3 Procedures 3.1 Provisiorwithdrawal 3.2 Normal pro
7、cedures 3.3 Exceptional procedures . 3.4 Alternative procedures . 4 Network capabilities for charging 5 Interworking considerations . 5.1 Interworking with non-ISDN networks 5.2 Interworking with private ISDN . Interaction with other supplementary services . 6.1 Advice of Charge (AOC) 6.2 Call Hold
8、(HOLD) 6.3 Call transfer services (ECT, NCT) . 6.4 Call Waiting (CW) 6.5 Closed User Group (CUG) . 6.6 Completion of calls services . 6.7 Conference services 6.8 Diversion services . 6.9 Direct-Dialling-In DI) 6.10 In-call Modification (IM) 6.11 ISDN Freephone (IFS) 6.12 Line Hunting (LH) 6.13 Malic
9、ious Call Identification (MCID) 6.14 Multi-level Precedence and Preemption (MLPP) . 6.15 Multiple Subscriber Number (MSN) 6.16 Name identification services . 6.17 . Number identification services . 6.18 Outgoing Call Barring (OCB) . 6.19 Reverse Charging (REV) 6.20 Sub-addressing (SUB) 6.21 Terminal
10、 Portability (TI?) 6.22 User-to-User Signalling (UUS) 7 Dynamic description 6 Recommendation 1.251.6 (02/95) Page 1 1 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 1 SUMMARY Connected Line Identification Restriction (COLR) is a supplementary service offered to the connected
11、 party to restrict presentation of the connected partys ISDN number and sub-address information to the calling party. 11 Recommendation 1.251.6 (02/95) Recommendation 1.251.6 Subscription option COLR mode CONNECTED LINE IDENTIFICATION RESTRICTION (COLR) (revised in 1994) Values - Permanent (presenta
12、tion restricted for ail calls) 1 Definition Default (only for temporary mode) Connected Line Identification Restriction (COLR) is a supplementary service offered to the connected party to restrict presentation of the connected partys ISDN number and sub-address information to the calling party. - Te
13、mporary (specified by user per call) - Presentation restricted - Presentation not restricted 2 Description 2.1 General description When COLR is applicable and invoked, the destination node provides the oiiginating node with a notification that the connected partys ISDN number and any sub-address inf
14、ormation is not allowed to be presented to the calling party. In this case no connected party number is included in the call connected information to the calling party. NOTE - When COLR is subscribed to, some network providers may not wish to send the identity of the connected customer to other netw
15、ork providers. .- 2.2 Specific terminology None identified. 2.3 Qualification on the applicability to telecommunication services None identified, Le. this supplementary service is applicable to all telecommunication services. Certain countries may define categories of subscribers that have the abili
16、ty to override the presentation restriction and have the connected partys ISDN number and any sub-address presented (e.g. the police). The ability to have such an override option is a national matter. 3 Procedures 3.1 Provisiodwithdrawal COLR can be provided on a subscription basis or be generally a
17、vailable. As a network provider option, COLR can be offered with the following subscription option. NOTE - If COLR permanent mode is provided generally, all connected numbers will be restricted for presentation. Recommendation 1.251.6 (02/95) 1 3.2 Normal procedures 3.2.1 Activatioddeactivatiodregis
18、tration The COLR supplementary service shall be activated on provision and deactivated on withdrawal. This supplementary service requires no registration. 3.2.2 Invocation and operation If the called party has subscribed to the COLR supplementary service in the permanent mode, then the network shall
19、 automatically invoke the COLR supplementary service for each incoming call. If the called party has subscribed to the COLR supplementary service in the temporary mode with default value “presentation restricted”, then the network shall automatically invoke the COLR Supplementary service for each in
20、coming call unless the default value is overridden by subscriber request at the time of answer. If the called party has subscribed to the COLR supplementary service in the temporary mode with default value “presentation not restricted”, then the network shall only invoke the COLR supplementary servi
21、ce if requested by the subscriber on answer. If the calling party subscribes to Connected Line Identification Presentation and the connected party had COLR activated, the calling party shall receive an indication that the presentation of the connected party number is restricted. - 3.3 Exceptional pr
22、ocedures 3.3.1 Activatioddeactivatiodregistration No exceptional procedures identified. 3.3.2 Invocation and operation No exceptional procedures identified. 3.4 Alternative procedures No alternative procedures identified. 4 Network capabilities for charging This Recommendation does not cover chargin
23、g principles. Future Recommendations in the D-Series are expected to contain that information. It shall be possible to charge the subscriber accurately for the service. 5 Interworking considerations When a call originates in one ISDN and terminates in another ISDN and COLR is applied, the rules and
24、regulations of the destination network (the host network) should apply. For calls between public ISDNs, when the COLR supplementary service is invoked, the destination network shall provide the originating network with a notification that the ISDN number of the connected party and the sub-address in
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