Can anyone give me a high level technical summary of how the Avaya IP phones function with the Avaya IP pbx? Need to implement QoS in the infrastructure, and later attempt interconnecting the Avaya system to *. I've got a sniffer trace of the phone bootup, an actual phone to phone call, etc. Looks like the system uses H225 signaling, phones pull tftp config files (Release 1.8.1, Build 1.803, Generic 1.81), model 46xx phones, "Avaya Multivantage R011x.03.0.526.5" appears in the packet capture, and, the equivalent of RTP traffic happens directly between the two IP phones involved in a completed call (similar to sip-based calls).