[asterisk-users] TDM400P (TDM22P) and aux power.

[Thomas Kenyon]

Joe Acquisto wrote:
> I need to ask, to refresh, is the aux power connector on the TDM400P card *only* to power the ringer on any 
> analog phones/devices on the system?  
> 
> Can I still use this board, to "terminate" POTS lines and use all SIP Phones?
> 
Yes, you only need to connect a power supply if you have FXS boards.

> Due to circumstances, I end up with a 1u server that has no aux power connectors available.  I "have to" use this server, so am considering abandoning the analog phones and using all SIP.
> 
> IIRC, the aux power *is* only to power ringers.
> 
I don't remember if it is also needed to provide the potential for the
line as well, but I cat testify to the fact that you can comfortably run
a TDM400P with 4 FXO boards on it and nothing plugged into the PSU header.

> joe a.