PRETS 300 098-1991

Integrated Services Digital Network (ISDN); Connected Line Identification Restriction (COLR) Supplementary Service Digital Subscriber Signalling System No. One (DSS1) Protocol


 

 

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标准号
PRETS 300 098-1991
发布日期
1991年01月01日
实施日期
2014年04月22日
废止日期
中国标准分类号
/
国际标准分类号
/
发布单位
ETSI - European Telecommunications Standards Institute
引用标准
16
适用范围
This standard specifies stage three of the Connected Line Identification Restriction (COLR) supplementary service for the pan-European Integrated Services Digital Network (ISDN) as provided by European public telecommunications operators at the .T reference point or coincident S and T reference point (as defined In CCITT Recommendation I.41111[1]) by means of the Digital Subscriber Signalling System No. one (DSS1). Stage three identifies the protocol procedures and switching functions needed to support a telecommunications service (see CCITT Recommendation I.130 [2]). In addition this standard specifies the protocol requirements at the T reference point where the service is provided to the user via a private ISDN. This standard does not specify the additional protocol requirements where the service Is provided to the user via a telecommunications network that is not an ISDN. The COLR supplementary service enables the connected party to prevent presentation of Its ISDN number to the calling party@ and is applicable to all circuit-switched telecommunications services. Further part(s) of this standard will specify the method of testing required to identify conformance to this standard. This standard Is applicable to equipment@ supporting the COLR supplementary service@ to be attached at either side of a T reference point or coincident S and T reference point when used as an access to the public 1SDN.




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