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

[Gabriel Gunderson]

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!


Best,
Gabe