[Asterisk-Dev] chan_sip not working right

[Eric Wieling aka ManxPower]

Tom Dickenson wrote:
> I am having a problem with chan_sip
> 
> My phones go offline after a 5 hours or so on the CLI I issue the reload
> command and it hangs at the chan_sip.so module. I am running the current CVS
> Asterisk as of last night (CVS-HEAD-/04/11/05-01:29:37)
> 
> Any suggestions? Bug? Need more information? What do I do?!

Sounds like a DNS issue or you are running NAT'd phones without the 
qualify=yes (there are ways to not need qualify=yes, but it seems to be 
the easiest way to work around NAT translation timeout issues)