dejanacy

Hi,
I have a client with 2 different IPOs 406 V2 and a Definity system. All systems are in different cities and for 3 years now, they have been communicating with each other via IP trunks with no problems whatsoever. 3 weeks ago we decided to upgrade the 2 IPOs to version 3.2(54), (they were running 2.1) so that we could use the "Allow outgoing call transfer" feature available at the 3.2 release (the IPOs didn't accept transfered outgoing calls from the Definity). Thus we did the upgrade in steps and except from checking the "Allow..." option we didn't change anything else in the IPO's configuration. Now we have the following crazy problem. While we can call from the IPO's any extension of the Definity with no problem, if we try to call from the Definity at the IPOs, the phone rings, the call can be answered, but both participants don't hear anything (call status shows that there is an ongoing call between the systems). I have double checked the old configurations and the new ones and they are virtually identical. Unfortunately I know almost nothing about the Definity system and the only thing I can say for sure, is about it's firmware:

System: G3siV11 Software Version: R011i.03.1.531.0

01C14 IP MEDIA PROCESSOR TN2302AP HW20 FW102 01 02 03 04 05 06 07 08

01C15 CONTROL-LAN TN799DP HW01 FW016 u u u u u u u u u u u u u 17

Any help would be appreciated.