[Asterisk-Users] Is it mandatory to give power supply to TDM400Pcard

[Jonathan k. Creasy]

Is it not for a card with 4 FXO? I spent several hours the other day
trying to figure out what I had done wrong and I ahd forgotten to
connect the power cable. 

I setup several of these before and couldn't figure out why this one
didn't work. It appears that's all it waqs. 

Without the power connecter the card will probe, and even appear to be
working but when the lines ring (coming into the FXO port) it will not
indicate the ring status to asterisk. 

-Jonathan

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Time
Bandit
Sent: Wednesday, August 10, 2005 3:04 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] Is it mandatory to give power supply to
TDM400Pcard

> I can modprobe TDM400P card without feeding power
> supply , so what is the purpose of providing power
> supply in that card.
> Can any body tell me
It is needed if you have FXS ports on it, because the card will need
to provide ringing voltage to the phone.

hth
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