[arm-allstar] Unexpected restart

[Tom Whiteside]

We have a couple of Asterisk Arm-Allstar repeaters that have been running
well in linked mode for close to six months now.    The things just run and
run so it was surprising to hear the Alison startup message on one of them
go off yesterday evening - I had done nothing to restart things and don't
have DTMF forced restarts enabled...   We have good backup power to the RP2
and checking the uptime showed that it was not an operating system restart.

Are there error conditions that cause an Asterisk restart?

Tom N5TW