VoIP over WLAN?

Why can data traffic greatly affect the performance of VoIP over WLAN? How can this problem be solved with the use of priority queue and MAC-layer multicast priority (MMP) scheme?

Briefly discuss the idea of iGSM in integrating the GSM network and H.323 IP network. Explain why additional components are necessary.

Briefly discuss the idea of the M-M (Multiplex-Multicast) scheme in VoIP over WLAN and explain how it can improve the performance of VoIP over WLAN.

In the practical illustration section, mesh network is suggested. Try suggesting some other practical scenarios in which ad hoc network routing will be useful.

Briefly explain the security measures adopted in GSM networks and the counter-measures adopted by the attackers in breaking such systems.


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