If you are relying on AT&T's paging/SMS service (for your phones) to be
alerted to (most certainly undesirable) operational events (or if you are
replying to them via the 2-way SMS service), this is a good time for a
backup pager: [...]
Both are dead like a door stop, and we can speculate on wether they
are located in the same physical building, on the same routed interface,
and the same physical switch, which failed the single processor
blade driving both of them.

POI: AT&T wireless service response to wireless phone trouble
report about 30 min ago was that AT&T wireless and AT&T long
distance stopped communicating a little while ago for reasons
not clearly known to AT&T wireless.

Facility somewhere go boom? Cable cut?

-george william herbert