MCQs>IT & Programming>Windows Mobile Development>During an outgoing VoIP call made through an IP PBX using a standard phone number, if the IP PBX cannot match the phone number with a SIP URI, then the IP PBX and the receiving device communicate over ________.
Windows Mobile Development MCQs
During an outgoing VoIP call made through an IP PBX using a standard phone number, if the IP PBX cannot match the phone number with a SIP URI, then the IP PBX and the receiving device communicate over ________.
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