Measurement of quality of audio/video traffic in UMTS/WLAN networks

Hi guys,
I am working on a network in OPNET simulation software for my dissertation and was wondering if any of you know about an aspect of OPNET and could help. I am building a UMTS/WLAN integrated network to study the quality of audio/video traffic experienced by the end users as it travels between these networks. I have been trying to determine if I can use OPNET for audio and video quality measurement, for example PSQM, PAQM, type measurements to determine if the quality of such traffic in networks would be acceptable to users.

Does OPNET has that feature it or is there anyway to collect audio/video data in OPNET to evaluate it somehow in any other way or software?

I have tried OPNET people and they throw back the need for having maintenance licences etc. I am also trying other ways to find this but if any of you has any idea about this then BINGO!

Any suggestions on this will be like a lighthouse to a boat in dark rough rocky waters.
Many thanks,
Sarmed.