I have a setup where we have CISCO IPT setup running independently and Separate AVAYA setup. Both are working fine.
Now we have a plan to integrate both so that both the existing setup will be as it is and both cisco & Avaya users can communicate.
So as per my knowledge we can do it by having QSIG/SIP/H323 any trunk.
So please confirm is it the only thing we have to do or we need to do something more.
Also want to know that what is will the Latency MAX & MIN recommenced by Cisco for Voice calls over WAN.