Last night there was some work being done to the power for our building and the backup batteries also ran out. When the power got restored, the system came up but gives no dial tone. It's a 1-stack, 3-PIM 2400IPX with dual CPU and dual TSW system.

Error messages say 1-A - Both TSW Failure (Permanent).

The CMOD command shows both TSW system in make-busy state. SINZ didn't help and complete power-down and power-up didn't help. I swapped the 2 SW10 cards with each other, but that didn't help eaither.

I got the Dterms powering on, and they all appear to be normal, but no dial-tone; obviously.

It's early hours, so my dealer is not yet reachable. Soon will be, but I'm looking for any help/advice I can get.