VoIP over WiFi

VoIP is very popular service and people had studied behaviour of VoIP over 802.111/b. As VoIP runs on packet switch network, it suffers from same problem as normal data traffic suffer. All intermediate nodes will take some finite amount of processing time and each hop will have finite propogation delay associated with it. Given VoIP connection has some end-to-end delay and jitter requirement which are supposed to be satisfied. There is upper bound on number of VoIP which we can support because of WiFi bandwidth is 11 Mbps.

Read more here
1. Can I add VoIP call?
2. UDP and VoIP Traffic in IEEE 802.11b Networks