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Standard
| GB 3971.2-1983 Interoffice junction digital line signalling system for telephone automatic switching network (English Version) |
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Detail of GB 3971.2-1983
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Introduction of GB 3971.2-1983
数字型线路信号方式是在电话交换网局间中断采用PCM系统时的线路信号方式。本标准规定我国电话网中纵横制市话局(包括准电子局)，程控市话局和自动长话局之间数字型线路信号编码，接口中继方式以及信号设备的相关技术指标。
Contents of GB 3971.2-1983