It sounds like your SIP devices aren't set up to periodically(frequently)
re-register themselves.  You can resolve this on the device level or have
asterisk poll them for re-registration.  It could also be some sort of
firewall/NAT problem that chops the connections at some interval.  

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Carlos Eduardo
Langoni
Sent: Monday, August 31, 2009 10:33 AM
To: [email protected]
Subject: [asterisk-users] Strange problem

Hi folks!

I have an asterisk, version 1.4.22.2, with dahdi 2.1.0.4 and OpenR2 2.1.1.0.
Sometimes twice a day, sometimes after 3 days, all sip devices looses
registry, but asterisk doesn't show nothing strange, no error log, and
all calls in E1 trunk continue running, but sending to voicemail.

What could be this problem? What should I research do find a solution?

Thanks a lot!

Carlos

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