[Freeswitch-users] Calls drop after ~1:48

Gabriel Gunderson gabe at gundy.org
Tue Aug 28 09:10:33 MSD 2012

On Sun, Aug 26, 2012 at 11:10 PM, R W <wingcomm at hotmail.com> wrote:
> We fixed this by shutting of the "Passive Session Timer" in the "SIP
> Miscellaneous." However, I'm curious to know if anyone can explain why this
> happens on some NATs and not others? Is there s problem with disabling the
> "Passive Session Timer" on our clients?

I think you'll find it has less to do with NATing and more to do with
the SIP user agent (UA) behind the NAT. If it *does* have to do with
NATing, then it's likely the SIP 'helpers' getting in the way. Google
ALG-based SIP-capable firewalls.

Let us know what you find. Oh, and you'll want to check this at the
SIP message level to get it figured out. Good luck!


Join us at ClueCon 2011 Aug 9-11, 2011
More information about the FreeSWITCH-users mailing list