Passing H323 traffic via cisco 1605R
Posted on 2006-11-14
I am trying to pass H323 traffic through cisco 1605R. The traffic is initiated but somehow some acknowledgement don't pass through and the traffic is interupted.
In fact the H323 traffic is flowing from my pabx in my internal network via cisco to internet to another pabx.
The cisco router here is my internet gateway and also the NAT.
I have tried the same thing with simple Speedtouch and Sagem ADSL modem and they work fine.
I have this problem only with cisco - or may be my configuration???
I've tried the same with Cisco 835. Got same problem,
I have double check the NAT configuration and I know it is working.
Using ethereal, I can see the traffic being initiated with packets to and from my pabx from the remote pabx. But somehow an acknowledgement is sent but not received, then the whole communication is dropped.
Could be related with a specific port.
I have been struggling with that for weeks.