ITU-T R.57 FRENCH-1988
规划采用50波特起止设备的与代码无关的国际点到点的电报通信和交换网络的传输质量标准限值

STANDARD LIMITS OF TRANSMISSION QUALITY FOR PLANNING CODE - INDEPENDENT INTERNATIONAL POINT-TO-POINT TELEGRAPH COMMUNICATIONS AND SWITCHED NETWORKS USING 50-BAUD START-STOP EQUIPMENT


 

 

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标准号
ITU-T R.57 FRENCH-1988
发布日期
1988年
实施日期
废止日期
中国标准分类号
M00
发布单位
IX-ITU
适用范围
The CCITT, considering that Administrations must agree on the composition of the international section and the national sections before setting up an international point-to-point telegraph circuit; that for the interconnection of switched public or private national networks a plan for distributing telegraph distortion between national networks and international circuits connecting the international terminal exchanges is required.

ITU-T R.57 FRENCH-1988 中可能用到的仪器设备





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