A remote office has a less-than-optimal WAN connection and experiences packet loss, delay, and jitter. Which VoIP codec should be used in this situation?
A. G.711ulaw
B. iLBC
C. G.722.1
D. G.729A
Which VoIP codec should be used in this situation?
Answer: B
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.