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| Section | Objectives |
|---|---|
| Voice over IP Configuration | - Voice over IP Configuration
|
| Integrating Voice over IP into the PSTN | - PSTN Integration
|
| Integrating Voice over IP into Existing PBX Networks | - PBX Integration
|
| Voice over IP Technologies | - Voice over IP Technologies
|
| Call Operation and Components in Voice over IP | - Call Operation and Components
|
Question 1
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. RTCP
B. TCP
C. UDP
D. RTP
E. CRTP
Question 2
The illustration above shows the timing and order of arrival of voice packets at the end device. Each voice packet contains 20 ms of voice data. Assuming a play-out buffer of 20 ms, what will happen to voice packet number 3?
A. It will be played out in its proper location.
B. It will be dropped and treated as a lost packet.
C. Immediately moved to the front of the play-out buffer.
D. It will be played out in the order it is received.
Question 3
Which dial plan characteristic shows the most obvious improvement by dropping a number translation step?
A. hierarchical design
B. scalability
C. availability
D. post-dial delay
Question 4
Examine the output.
ccm-manager mgcp ! mgcp 5036 ! voice-port 1/0/0 ! voice-port 1/0/1 ! dial-peer voice 1 pots application MGCPAPP port 1/0/0 !
dial-peer voice 2 pots application MGCPAPP port 1/0/1 !
Your customer has sent you their MGCP gateway configuration. They are unable to get the gateway to communicate with the call agent. What command needs to be inserted to resolve the problem?
A. application MGCPAPP 172.16.1.1
B. mgcp call-agent 172.16.1.1
C. mgcp 5036 172.16.1.1
D. ccm-manager mgcp 172.16.1.1
Question 5
Refer to the exhibit. Users are not able to complete a call from 678-555-1212 to 770-5551111. What is the correct diagnosis for the problem?
A. incorrect dial-peer statement in Router 1
B. incorrect port statement in Router 1 pots dial peer
C. incorrect session-target statement in Router 2
D. incorrect destination-pattern in Router 1
Solutions:
| Question 1 Answer: D | Question 2 Answer: B | Question 3 Answer: D | Question 4 Answer: B | Question 5 Answer: D |
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