SYSTEM X: SUBSYSTEMS - 4. COMMON-CHANNEL SIGNALLING AND THE MESSAGE TRANSMISSION SUBSYSTEM.

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Prichard, T.W.
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Post Office Electrical Engineers Journal | 1980年 / 73卷 / pt 3期
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摘要：
The general principles and advantages of using common-channel signalling (CCS) for System X exchanges have been described in a previous article. The CCS system adopted for the System X project is based on the CCITT Signalling System No. 7, which is described in this article. The message transmission subsystem, which performs the message transfer functions for the signalling system in accordance with CCITT specifications is discussed. For comparison, a description of the operational features of the CCITT Signalling System No. 6 is included.
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页码：165 / 170
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