[asterisk-users] asterisk 1.2.12 lost phone registrations today... why?

[Jerry Geis]

I lost my internet connection today for a short time.
During that time 1.2.12.1 stopped talking to my phones.
Asterisk was still working as I got 2 voicemails. I have TDM analog 
cards for incoming calls.

Anyway my cisco phones had X's (lost registration) and my uniden phones 
said "Registration error".

Why would phones loose registration to asterisk when the internet 
connection and DNS was lost.
All phones have hardcoded IP addresses not DNS names.

Any ideas? THanks,

Jerry