My Cisco Ex90 is connected to DSL home connection. I want to call to an IP Endpoint with reachable as IP like Cisco C20or EX90. I set the EX90 in H323 Setting -->NAT the Public IP of my Public IP Address and he has also an internal IP address. I can make calls to outside IP but unfortunately not to take call from external. In the home router I can nothing set like NAT setting or whatever. What can I still make the Ex90 devices to legacy Home DSL connections without problems IP to IP connection.
Oh ok, have you managed to receive the call from public network side now?
> Please note, if you modify default port configuration to static,
> Endpoint must restart first otherwise Endpoint still allocate port dynamically.
This is quite easy to forget to do (^^).
No, port 2776 is used if your MXP endpoint registered on VCS-E.
If your Endpoint is not registered on GK and call setup mode is direct, following port may use (In static port configuration).
- Port 1720 (Q.931 Call Setup)
- Port 5555-5574 (H.245)
- Port 2326-2485 (Media)
If H.323 Port configuration is Dynamic, then Endpoint will allocate which ports to use when opening a TCP connection.
The reason for doing this is to avoid using the same ports for subsequent calls, as some firewalls consider this as a sign of attack.
When Dynamic is selected, the H.323 ports used are from 11000 to 65535. Once 65535 is reached they restart again at 11000.