PRETS 300 356-12-1993 标准详情
- 标准号:PRETS 300 356-12-1993
- 中文标题:
- 英文标题:Integrated Services Digital Network (isdn) - Ccitt Signalling System No 7, Isdn User Part (isup) Version 2 For The International Interface - Conference Call, Add On (conf) Supplementary Service
- 标准类别:欧洲通信ETS,I-ETS,PRI-ETSETS
- 发布日期: