IP office communcation with Cisco Call Manager

[Tygass]

i have a ip office that was at a 3.0.44 that communicated through an IP trunk to a Cisco Call Manager. it worked fine until i upgraded them to 4.0.14
are these two system still compatible at this release or is there a change that needs to be made on either end to get this working? any help would be appreciated.

 

[kwing112000]

what is it doing now? nat talking at all. i have a CM to IPO that we have never been able to get working. it will ring a call and then drop after 10 seconds.

Kevin Wing
ACA- Implement IP Office
Carousel Industries

 

[Tygass]

it works fine from the IP office to the call manager but from the call manager to the ip office it rings, but when you answer it, it goes busy