Annex m contains the additional basic call signalling requirement for the support of private network interconnection for VPN applications.
附件M包括虚拟专用网应用中支持专用网互联的附加基本呼叫信令要求。
Annex m contains the additional basic call signalling requirement for the support of private network interconnection for VPN applications.
附件M包括虚拟专用网应用中支持专用网互联的附加基本呼叫信令要求。
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