The specifications of automatic telephone set 自動電話機技術(shù)條件
Automatic telephone switching system 自動電話交換系統(tǒng)
Automatic telephone trunk network 長途自動電話網(wǎng)
Automatic telephone analyzer 自動化電話分析儀
Automatic telephone exchange 自動電話交換局
Grading standard for stored program control private automatic telephone branch exchange quality 程控用戶自動電話交換機質(zhì)量分等標準
General specification for the key management center in the military digital secure automatic telephone network 軍用數(shù)字保密自動電話網(wǎng)密鑰管理中心通用規(guī)范
The test methods for the technical specifications of ringing and tone for automatic telephone switching network 電話自動交換網(wǎng)鈴流和信號音技術(shù)指標測試方法
The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 電話自動交換網(wǎng)用戶信號技術(shù)指標測試方法
The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 電話自動交換網(wǎng)帶內(nèi)單頻脈沖線路信號技術(shù)指標測試方法