A remote office has a less-than-optimal WAN connection end experiences packed loss, delay, and jitter. Which VoIP codec should be used in this situation?

The correct answer is C. iLBC. iLBC: iLBC provides audio quality between that of G.711 and G.729 at bit rates of 15.2 kbps (38- bytes or 20msec) and 13.3 kbps (50 bytes or 30 msec). iLBC handles lossy networks in better way than G729 because it treats each packet independently. G729 depends on the previous…

Media and QoS

Question

Options

AG.722.1
BG.711alaw
CiLBC
DG.729A

How the community answered

(41 responses)

B
2% (1)
C
93% (38)
D
5% (2)

Explanation

iLBC: iLBC provides audio quality between that of G.711 and G.729 at bit rates of 15.2 kbps (38- bytes or 20msec) and 13.3 kbps (50 bytes or 30 msec). iLBC handles lossy networks in better way than G729 because it treats each packet independently. G729 depends on the previous packet to handle packet loss, jitter and delay which doesn't tolerate well in lossy networks.

Topics

#VoIP Codecs#Packet Loss Resilience#Network Impairments#Media Quality

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