[Asterisk-Users] Line death not recognized on TDM400P?

[Rich Adamson]

> A customer of mine has 3 TDM400P cards in a box running asterisk.  On 
> each card he has four FXO modules.  
> 
> I have set up the dialplan to dial via group 1 for an outgoing call.
> 
> Channels 1-12 are in group 1.
> 
> If he plugs a telephone cable into socket 2 or 3 etc, but not 1, when 
> he dials out, it still tries to make the call via socket 1.
> 
> Straight away the console says that it has dialed the number via g1 
> and that it is connecting sip/bla with zap/1-1 (or some such)...
> 
> On my X100P I get a red alarm if the phone cable is not plugged in.  
> Is there any way to do this with the TDM400P?
> 
> They would like to be able to unplug lines and use them for other 
> purposes at times.
> 
> Make sense?
> 
> I kinda thought that asterisk would realise that nothing was 
> connected to the TDM card and try the second socket, the third etc...

It makes sense, but the code to detect unused rj11's is not in * now.

In fact, you'll find that unplugging and replugging the rj11's will
cause * to fail after a while. (At least that was the case about a
month ago and there really haven't been any changes to the fxo
software for some time.)

There are no alarms or other indicators available that would suggest
a port has failed or is unavailable.