资讯
A voice over IP (VoIP) call path. One SIP trunk supports one phone call. See SIP trunking and VoIP. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.
In addition, when switching service from a landline to a VoIP line, the landline number can often be ported to the SIP line. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果