hold call service 中文意思是什麼
hold call service
解釋
呼叫保留-
Isdn. telecommunications - integrated services digital network - call hold supplementary service
電信.綜合服務數字網路 -
In succession, h. 450, the supplementary service for h. 323, especially the call hold supplementary service is introduced, which can provide a more flexible ivr
接著,介紹了h . 450附加業務,它是增強ivr靈活性的基礎,其中重點介紹了呼叫保持附加業務。
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