I.S. ETS 300 121-1993 标准详情
- 标准号:I.S. ETS 300 121-1993
- 中文标题:
- 英文标题:Integrated Services Digital Network (isdn); Application Of The Isdn User Part (isup) Of Ccitt Signalling System No. 7 For International Isdn Interconnections (isup Version 1)
- 标准类别:爱尔兰国家标准I.S.
- 发布日期: