Avaya VoIP / H.323 capture and conversion to .WAV files

We are trying to convert a H.323-based file captured from Avaya's IP Phones.? The RTP component is clear.? We can capture RTP packeckets in to .WAV files.? However, Avaya has some proprietary H.323 extensions that contain "call control" information (such as Extension or Port ID, Number dialed, Caller ID, etc...).? We need to capture and correctly convert this data also.? So, the deliverable is a program that will use as input a newtwork dump (from Wireshark) and produce .WAV files with corresponding "call control" files. Please only reply to this bid if you know "hands-on" experience with interpreting? H.323 . Thank you.? Michael