Hi All
Can anyone help
I am having an issue wherby we have some Cisco phones and a PSTN Gateway on Site A and the Call Manager server on Site B.
There is a Checkpoint Firewall running R77.3 between the 2 sites.

We are getting one way voice issues, when looking at packet captures and debugs on the gateways I can see that the Checkpoint seems to be altering the media session in the h245 messages.

I have tried turning off h323 inspection between all the phones, gateway and call manager but its still not working

Any ideas?