[asterisk-users] Using a Loopback Plug for an RJ-45 EthernetInterface for testing a Digium Card

[Alexander Lopez]

It will go Green if a PROPER loopback plug is inserted.

Pins 1 and 2 shorted to 4 ad 5

Pin 1 to 4
Pin 2 to 5

Leave the others open...


> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Jay R. Ashworth
> Sent: Saturday, May 17, 2008 6:02 PM
> To: asterisk-users at lists.digium.com
> Subject: Re: [asterisk-users] Using a Loopback Plug for an RJ-45
> EthernetInterface for testing a Digium Card
> 
> On Sat, May 17, 2008 at 05:50:46PM -0400, Jose P. Espinal wrote:
> > Someone told me about using a Loopback plug for RJ-45 for testing if
a
> > Digium Card gave him 'green' Alarm (for testing if the card had been
> > damaged by  a strange voltage surge); would this have some bad side
> effect?
> 
> Well, it's actually probably an RJ-48X interface, but who's counting.
> 
> If your question, though, is "would plugging a loopback-wired 8p8c
modular
> plug into the jack on the back of a T-1 card cause it any damage in
> itself?", I can't imagine the answer would be "yes", no.
> 
> If you loop it and it stays in Red alarm, it's probably broken.
> 
> I can't speak to exactly what the alarm status stuff does if the port
> you're looping expects to have a PRI plugged into it: I would expect
> "Green, but no actual traffic", but I could be wrong, I'm a bit new on
> that front.
> 
> Cheers,
> -- jra
> --
> Jay R. Ashworth                   Baylink
> jra at baylink.com
> Designer                     The Things I Think
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