[asterisk-users] SNOM loses server registration

[Joao Pereira]

Hello to all
When my SNOM (300 or 320) loses Internet connectivity, it loses its 
Asterisk registration (ok, thats normal).
But when the phone is back online, he doesn't try to register in 
Asterisk. I believe this happens to avoid flooding the private LANs when 
the Internet link is lost.... but the problem is that the phones don't 
try to re-register in the future.... Sometimes it stays 2 hours without 
registering to Asterisk.
When this happens, the only solution is to reboot it (and hear the users 
complains) :(
How can I avoid this? How can I reduce the time to re-register in SNOM 
300 or 320 ?

Thanks
Joao Pereira