PD 7021-1996 标准详情
- 标准号:PD 7021-1996
- 中文标题:公共电信网络4条模拟语音频带租赁线连接终端设备的基本要求
- 英文标题:essential requirements for terminal equipment intended for connection to 4-wire analogue speechband leased lines of the public telecommunications network
- 标准类别:欧洲PD
- 发布日期:1996-06-15