I have callmanager voip system behind an 837 running nat.
I have 5 static IP address range from my ISP so I configured pat on my servers for smtp, ftp etc.
Problem is incoming calls from sip provider and incoming audio don't work to my Callmanager express system. I guess they are being blocked because of dynamic ports and such like.
Can anybody tell me if there is anyway to force all incoming traffic from an specific external address to be forwarded to a single internal address? So all traffic from my sip provider goes to my pat'ed ccme?
Thanks in advance