broadband exchange service 中文意思是什麼
broadband exchange service
解釋
寬頻帶交換業務-
The big media gateway in the soft switching will mainly serve in the inter - exchange of broadband ip man voice service and pstn
?軟交換中大媒體網關方式主要用作寬帶ip城域網上話音業務與pstn互通方面;
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