[asterisk-users] Re: Asterisk hangs up after 10-15 minutes when SIPPhone is on mute

[Dr. Michael J. Chudobiak]

Mike wrote:
> Thanks Tony.  Its possible that the phone stops sending RTP stream (but it
> certainly is receiving some!). How do I get Asterisk to stop caring whether
> it receives RTP or not?
> 
> Yes there is a NAT between the phone the the Internet.  The Asterisk server
> doesn't have NAT though.

My Sonicwall NAT/firewall has a 15 minute default inactivity timeout for 
TCP NAT connections, which is suggestive (it can be increased, though). 
If the signaling vanishes in one direction, maybe your NAT device is 
"forgetting" about the connection.

- Mike