642-432 試験問題を無料オンラインアクセス

What is the best description of an MGCP endpoint?

• A.any analog telephony device (PBX, switch, etc.)
• B.the interconnection between packet and traditional telephone networks
• C.IP phones
• D.the gatekeepers in a VoIP network

DRAG DROP
Drop

正解：

In the VoIP network above, which protocol provides the necessary sequence numbers so voice packets originating at R1 are played in the correct order at R5?

• A.RTP
• B.RTCP
• C.CRTP
• D.TCP
• E.UDP

LAB

Examine the following PBX system parameters:
The calling side seizes the line by going off-hook on its E-lead and sends information as DTMF digits.
The voice path is 4-wires, and the voice enabled router is in another building from the PBX.
Select the correct set of commands to allow communication between a voice enabled router and a PBX.

• A.voice port 1/0/0 signal immediate-start operation 4-wire type 4
• B.voice port 1/0/0 signal wink-start operation 4-wire type 3
• C.voice port 1/0/0 signal immediate-start operation 4-wire type 2
• D.voice-port 1/0/0 signal delay-dial operation 4-wire type 1

Which statement is true about only out-of-band signaling?

• A.Signaling bits are sent in a special order in a dedicated signaling frame.
• B.All signaling is directly associated with its corresponding voice frame.
• C.All voice packets carry their own signaling.
• D.A signaling bit is robbed from each frame.