ITU-T X.50 BIS-1989
用于同步数据网络之间国际接口的48kbit/s用户数据信令速率传输方案基本参数

Fundamental Parameters of a 48-kBit/s User Data Signalling Rate Transmission Scheme for the International Interface between Synchronous Data Networks - Data Communication Networks - Transmission, Signalling and Switching, Network Aspects, Maintenance and

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标准号

ITU-T X.50 BIS-1989

发布

1989年

发布单位

国际电信联盟

 

 

适用范围

1.1 for 48-kbit/s data signalling rate for interworking of networks that make use of the following structures: This Recommendation sets out the fundamental parameters of a transmission scheme that should be used a)8-bit envelope (see Explanatory Notes 1 and 2 of Recommendation X.50); b)10-bit envelope (see Explanatory Note 3 of Recommendation X.50); in the case where at least one of the networks is structured according to a). 1.2 8 1.1 b) above, Recommendation X.51 bis will apply. For interworking between two networks both of which utilize the 10-bit envelope structure as identified in 1.3 Paragraph 2 of this Recommendation deals with the basic parameters which shall be used in any application of this Recommendation and, in particular, for interworking between two networks, both of which utilize the 8-bit envelope structure. 1.4 Paragraph 3 of this Recommendation, in addition to 0 2, applies to the interworking of networks with different envelope structures. 1.5 The use of the status bit, in addition to the indication given in this Recommendation, should comply with Recommendation X.21 and X.21 bis, together with Recommendation X.71 for connections using decentralized signalling and with Recommendation X.60 for connections using common channel signalling.

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