SIP to ISDN drama NO AUDIO on Transfers from stations only

[DOIMPRO]

CM 3.X
I am facing yet another issue (My luck with chronic trunk to trunk amuses me)
I have raised a ticket with Avaya but feel that this is the best place to start looking for resolutions.

Situation#1 Call arrives on SIP trunk, Routes to agent (4610) and all is good.
Situation #2. Call arrives on SIP trunk and gets routed via vector transfer to ISDN all is good.
Situation #3 Call arrives on SIP to agent and agent starts a conf call with ISDN, Agent can hear ISDN fine, When Agent presses conf again to bridge the active sip we have issues (Listing them next)

Issue 1: SIP to agent, conf to ISDN, only agent can hear both parties, caller on SIP and caller on ISDN cannot hear each other

Issue 2: Caller on SIP to agent transfer to ISDN , when transferred to ISDN gets a active channel normal in trace, but NO audio connection. We see no active medpros

any Ideas?


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