[Asterisk-Users] D Channel Becoming "CORRUPTED"?

[Matt]

Hi,
    This is not entirely an asterisk question but I figure someone
here may know the answer to this question.
    On several occassions we will lose the ability to use one of our
PRI lines.... well for our phone system anyway.... (we also sometimes
lose PRIs on some of our access equipment, etc).   After much trouble
shooting I finally decide to reset the PRI (unplug it and plug it back
in).  This seems to fix the issue... both on the * server, as well as
on our Cisco access equipment.
    The explination the phone company has given is that perhaps the "D
channel is becoming corrupted and needed to be reset".  This sounds
like a cop-out to me.  Any thoughts?   Shouldn't I be able to expect
my PRI lines to run 100% without the need for a line reset?