试题详情
- 多项选择题In a VoIP network, which three call signaling protocols are supported by the Cisco CallManager for call setup, call maintenance, and call teardown? ()
A、 H·323
B、 UDP
C、 RTP
D、 TCP
E、 Media Gateway Control Protocol (MGCP)
F、 session initiation protocol (SIP)
- A,E,F
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