[Asterisk-Users] Astra 480 i doesn't re-register

[Jason Brashear]

I have 4 Aastra 480i CT IP SIP Phone
Some time if I have to restart Asterisk the
Phones don't register in.
It takes a long time for them to register like about 3 hours.
If I restart the phones they register in.

Is there a way to change the time in witch the phones register in with the
server?
-Jason