ITU-T Q.85.1-1992
行业共用补充业务第2阶段描述:闭和用户群(CUG)
STAGE 2 DESCRIPTION FOR COMMUNITY OF INTEREST SUPPLEMENTARY SERVICES SECTION 1 - CLOSED USER GROUP (CUG)
ITU-T Q.85.1-1992 发布历史
This Recommendation defines the stage 2 of the integrated services digital network (ISDN) as provided by telecommunications operators for the Closed User Group (CUG) supplementary service.Stage 2 identifies the functional capabilities and the information flows needed to support the service description.The Stage 2 description also identifies user operations not directly associated with a call (see Recommendation1.130 [i]).This Recommendationis specified according to the methodology specified in Recommendation Q.65 [2].This Recommendation does not formally describe the relationship between this supplementary service and the basic call,but where possible,this informationis included for guidance.In addition,this Recommendation does not specify the requirements where the service is provided to the user via a private ISDN.This Recommendation does not specify the requirements for the allocation of defined functionalentities within a privateISDN,it does however,define which functional entitiesmay be allocated to a private ISDN.This Recommendation does not specify theadditional requirements where the service is provided to the user via a telecommunications network that is not an ISDN.The CUG supplementary service enables users to form groups to and from which access is restricted.A specific user may be a member of one or more closed user groups. Members of a specific Closed User Group can communicateamong themselvesbut not, in general,with users outside the group.The CUG supplementary service is applicable to all telecommunication services.This Recommendation is applicable to the stage 3 Recommendations for the ISDN CUG supplementary service. The term “stage 3” is also defined in Recommendation I.130 [i].
ITU-T Q.85.1-1992由国际电信联盟 IX-ITU 发布于 1992-02-01。
ITU-T Q.85.1-1992 在中国标准分类中归属于: M40 电话通信设备。
ITU-T Q.85.1-1992 发布之时，引用了标准
- ITU-T I.130 表征由ISDN支持的电信业务和ISDN网络能力的方法-普通结构和服务能力 研究组18.5pp
- ITU-T Q.65 对于包括可选面向目标技术的业务和网络能力特性的统一功能方法*， 2000-06-01 更新
- ITU-T I.112 ISDNs 用术语*， 1993-03-01 更新
- ITU-T Q.71 ISDN开关电路模式服务*， 1993-03-01 更新
- ITU-T I.255.1 封闭用户组
- ITU-T I.210 ISDN远程通信业务规则及说明方法*， 1993-03-01 更新
- ITU-T Q.950 补充业务协议、结构和一般原理系列Q:交换和信令-NO.1数字用户信令系统-用ISDN的补充业务*， 2000-06-01 更新
- ITU-T Q.931 用于基本呼叫控制的ISDN用户网接口第3层规范-系列Q:交换和信令-NO.1数字用户信令系统-数据链路*， 1998-05-01 更新
- ITU-T Q.763 NO.7信令系统-ISDN用户部分消息和信号的一般功能-系列Q:交换和信令-NO.7信令系统的准则.研究组11*， 1999-07-24 更新
* 在 ITU-T Q.85.1-1992 发布之后有更新，请注意新发布标准的变化。
ITU-T Q.85.1-1992的历代版本如下：
- 1992年02月01日 ITU-T Q.85.1-1992 行业共用补充业务第2阶段描述:闭和用户群(CUG)
- 标准号
- ITU-T Q.85.1-1992
- 发布日期
- 1992年02月01日
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- M40
- 发布单位
- IX-ITU
- 引用标准
- ITU-T I.130 ITU-T Q.65 ITU-T I.112 ITU-T Q.71 ITU-T I.255.1 ITU-T I.210 ITU-T Q.950 ITU-T Q.931 ITU-T Q.763
- 适用范围
- This Recommendation defines the stage 2 of the integrated services digital network (ISDN) as provided by telecommunications operators for the Closed User Group (CUG) supplementary service.Stage 2 identifies the functional capabilities and the information flows needed to support the service description.The Stage 2 description also identifies user operations not directly associated with a call (see Recommendation1.130 [i]).This Recommendationis specified according to the methodology specified in Recommendation Q.65 [2].This Recommendation does not formally describe the relationship between this supplementary service and the basic call,but where possible,this informationis included for guidance.In addition,this Recommendation does not specify the requirements where the service is provided to the user via a private ISDN.This Recommendation does not specify the requirements for the allocation of defined functionalentities within a privateISDN,it does however,define which functional entitiesmay be allocated to a private ISDN.This Recommendation does not specify theadditional requirements where the service is provided to the user via a telecommunications network that is not an ISDN.The CUG supplementary service enables users to form groups to and from which access is restricted.A specific user may be a member of one or more closed user groups. Members of a specific Closed User Group can communicateamong themselvesbut not, in general,with users outside the group.The CUG supplementary service is applicable to all telecommunication services.This Recommendation is applicable to the stage 3 Recommendations for the ISDN CUG supplementary service. The term “stage 3” is also defined in Recommendation I.130 [i].