[asterisk-users] Gateway errors

[voip crazy]

Hello list,

I have an asterisk instalation with a bad internet connection cause
this connection is down sometimes.
When the connection is down and asterisk cannot get internet
connection. All the extensions log out from the asterisk machine, and
nobody can make any call.

¿Why if internet connection is down asterisk stops working correctly?
¿How could I solve that?

Thansk.

VoipCrazy