[Asterisk-Users] Problem with a TDM400

[Rich Adamson]

> I have a small system based on one TDM400 card with
> - 2 FXO modules for incoming lines
> - 1 FXS module for one phone
> 
> The system was working fine in the past. The motherboard was exchanged
> and during the switch, the phones line was rewired with a mistake and a
> incoming phone line was connected to the FXS module, and there was
> ringing voltage on the module.
> 
> Now, the system kinda works but the FXS module stays in state Rsrvd, no
> ringing, all the call goes directly to voice-mail (it's programmed this
> way in extensions.conf), no dial-tone on the phone.
> 
> Is my FXS module dead ?

> Freshmaker passed register test
> Module 0: Installed -- AUTO FXO (FCC mode)
> Module 1: Installed -- AUTO FXO (FCC mode)
> Module 2: Installed -- AUTO FXS/DPO
> Module 3: Not installed

> Power alarm on module 3, resetting!

That would be my guess. Looking at the specs for the Silicon Labs chips
used on the modules, I would have guessed the module would have been
protected from ringing voltage. But, who knows for sure.

Might try calling digium support to see what they think.