ITU-T R.117 FRENCH-1993
与再生设备相关的电报,电传和欧洲电报自动交换网络的端对端误差性能.电报:电报传输.9号研究组;6pp
END-TO-END ERROR PERFORMANCE FOR TELEGRAPH, TELEX AND GENTEX CONNECTIONS INVOLVING REGENERATIVE EQUIPMENT
ITU-T R.117 FRENCH-1993 中，可能用到以下仪器设备
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- 标准号
- ITU-T R.117 FRENCH-1993
- 发布日期
- 1993年03月01日
- 实施日期
- 废止日期
- 无
- 中国标准分类号
- M16
- 发布单位
- IX-ITU
- 适用范围
- The CCITT considering (a) that telegraphy essentially involves the transmission of digital information; (b) that errors reflect either losses or invalid information; ？ that signals can be regenerated at several points along the lin (inter alia by multiplexers and/or switching exchanges). So that distortion is no longer the main criterion of performance; (d) that Recommendation F.10 recommends as an objective, for communications in the public telegram, telex and leased circuit services operated by Ci-unit start-stop equipment with a modulation speed of 50 bauds, a maximum error rate tolerance of 3 in 100000 alphabetic telegraph signals transmitted; ? that transmission equipment is increasingly based on digital systems such as R.100-Series Recommendations mu1 tiplexers; (d) that, since increasing use will be made of digital network, performance criteria should be consistent with those of Recommendation G.821.