Two Questions in Nortel Certification 920-803

1.Which three voicepacketizationparameters should you use to determine bandwidth
requirements for aVoIPsolution? (Choose three.)
A.CODECs
B.Jitter Buffer
C.Voice Sample Packet Size
D.EchoCncellation
E.Voice Activity Detection (VAD)
Answer: A B C

2.In comparison with the H.323 protocol, why is debugging an IP telephony call easier
suing Session Initiation Protocol (SIP)?
A.It requires a monitor with abstract syntax nation 1 decoding support.
B.Its signaling is modeled after the Hypertext Transfer Protocol (HTTP).
C.It is executed from any endpoint terminal or device on the network transporting the IP
telephony call.
D.It requires specialized tools adapted to International Telecommunications Union (ITU)
versions.
Answer: B

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