voicegrade

基本解釋

In a telephone system, a term applied to any nondata transmission that makes use of voicegrade lines.
適用於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(yǔ)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
載躰和用戶裝置間的接口。帶有特殊報(bào)警功能的模擬聲音級(jí)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)程通信載躰與用戶裝置間接口-用於循環(huán)開(kāi)始的接地開(kāi)始信號(hào)發(fā)送的模擬音頻開(kāi)關(guān)訪問(wèn)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)啓動(dòng)監(jiān)督的用戶設(shè)備用模擬音頻級(jí)專用存取線路