asterisk users - Aug 2005 - Is it mandatory to give power supplytoTDM400Pcard

No I got confused....yes they are FXO modules with POTS lines coming
from bell attached. 

The only thing I can think of is that since the card supports 3.3v or 5v
PCI slots that maybe on a 3.3v slot it requires the other connection all
the time because it really does need the 5v and is just not picky about
where it comes from. 

-Jonathan

-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Andrew
Kohlsmith
Sent: Thursday, August 11, 2005 9:44 AM
To: asterisk-users@lists.digium.com
Subject: Re: [Asterisk-Users] Is it mandatory to give power
supplytoTDM400Pcard

On Thursday 11 August 2005 09:30, Jonathan k. Creasy
wrote:
> Ok, I just unplugged my power connector to a card with 4 FXO modules
and
> they no longer work.
You're *sure* you've got FXO modules and not FXS ones?  FXO plug into
regular 
phone lines, FXS plug into telephones... 

Unless Digium changed something and now powers both off of that 12V
supply...  

-A.
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Jonathan k. Creasy wrote:
> The only thing I can think of is that since the card supports 3.3v or 5v
> PCI slots that maybe on a 3.3v slot it requires the other connection all
> the time because it really does need the 5v and is just not picky about
> where it comes from. 
No, that is not correct. The +5V power pin on the Molex connector is not 
even wired to anything on the board, it is completely ignored.

As the others have already said, the FXO modules do not use the +12V 
power feed at all. The TDM400P with only FXO modules installed works 
just fine without the auxiliary power connector connected to a power supply.

The power connector is used to supply ringing voltage when fxs
modules are used.

Thank you,
Steve Maroney

On Thu, 11 Aug 2005, Kevin P. Fleming wrote:
> Jonathan k. Creasy wrote:
>
> > The only thing I can think of is that since the card supports 3.3v or
5v
> > PCI slots that maybe on a 3.3v slot it requires the other connection
all
> > the time because it really does need the 5v and is just not picky
about
> > where it comes from.
>
> No, that is not correct. The +5V power pin on the Molex connector is not
> even wired to anything on the board, it is completely ignored.
>
> As the others have already said, the FXO modules do not use the +12V
> power feed at all. The TDM400P with only FXO modules installed works
> just fine without the auxiliary power connector connected to a power
supply.
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