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Cisco 642-432 Exam Syllabus Topics:

Cisco Voice Over IP Sample Questions:

1. What is the E.164 numbering plan?

A) the European PBX standard telephony number plan
B) the IETF North American number plan
C) the ITU worldwide number plan
D) a proprietary PBX number plan

2. You have been forwarded some questions by a prospective VoIP customer who would like to know the Cisco default sample size for the G.729 codec. What is it?

A) 10 ms
B) 30 ms
C) 20 ms
D) 40 ms

3. How is CAS different on E1 and T1?

A) E1 CAS signaling is out-of-band while T1 is in-band.
B) T1 has more signaling channels.
C) E1 uses robbed-bit signaling.
D) T1 uses the D channel for CAS signaling.

4. What is the function of a SIP location server?

A) resolves text addresses to IP addresses
B) routes service requests
C) resolves active endpoint addresses
D) acquires active endpoint addresses

5. Which three are supervisory signals? (Choose three.)

A) off hook
B) ring
C) call waiting
D) busy
E) on hook

Solutions: