英语词汇“off-premise extension”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	off-premise extension
释义	off-premise extension off-premise extension A telephone in a remote location that is treated as an ordinary extension phone. Before IP telephony was developed, off-premise extensions (OPXs) were handled by forcing the PBX to complete an outbound circuit in addition to the inbound one. See OPX See OPX
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