Incoming H.225 and H.245 calls

[vsergeyev]

I connected one of several corporate offices to VOIP provider through PIX. In this office we have CME registered on corporate Gatekeeper and several IP phones. All users of this office can be reached from corporate voice network and they can make calls through VOIP provider (I see that my PIX make fixup for calls from inside to outside) ? but I can't hear voice from outside user when call ara initiated from VOIP provider (PIX don't see h.323 setup message and see only "proceeding" message from internal CME.

VOIP provider use also Cisco devices, so devices should be compatible (h323 v4)

Thank you in advance

Valery

[#2]

What is the PIX version you are running if you are running a version below 6.3 upgrade it as PIX does not support v4 before 6.3.

[vsergeyev]

For Info:

Pix has 6.3(4).

I found decison myself. When I used as calling voice gateway 1760 (ios 12.3(13)) I didn't have this problem, but when calls were originated from 5350(also ios 12.3(13) ) I saw this error.

I added "IP TCP PATH-MTU-DISCOVERY" on Cisco 5350 - and now all is OK.

Thanks