电话自动交换网多频记发器信号技术指标测试方法
The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network
标准状态
发布于:1983-12-15
实施于:1984-10-01
废止
基本信息
标准简介
电话自动交换网多频记发器信号 技术指标测试方法
The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network
电话自动交换网多频记发器信号 技术指标测试方法