voicegrade

基本解釋

In a telephone system, a term applied to any nondata transmission that makes use of voicegrade lines.
適用于利用音頻段線路的任何非數(shù)據(jù)傳輸業(yè)務(wù)。
VGDF? VoiceGrade Data Facility?
語音頻段數(shù)據(jù)通信設(shè)備?
Telecommunications - Interface between carriers and costumer installations - Analog voicegrade switched access lines with distinctive alerting features
載體和用戶裝置間的接口。帶有特殊報(bào)警功能的模擬聲音級交換選取線路
Telecommunications - Interface between carriers and customer installations - Analog voicegrade switched access lines using loop-start and ground-start signalling
遠(yuǎn)程通信載體與用戶裝置間接口-用于循環(huán)開始的接地開始信號發(fā)送的模擬音頻開關(guān)訪問線路
Telecommunications - Network to Customer Installation Interfaces - Analog Voicegrade Special Access Lines Using Customer-Installation-Provided Loop-Start Supervision
用戶設(shè)備接口網(wǎng)絡(luò)。裝有循環(huán)啟動(dòng)監(jiān)督的用戶設(shè)備用模擬音頻級專用存取線路