[asterisk-users] E1 crossover system

[Paul Hales]

Yes - I have made a few E1 crossovers up before, and the person who
works on the current PABX made one up as well.

The fact that both the External connection and the connection to the
PABX both did not work seemed would seem to indicate that something
there is wired differently.

Of course, the current PABX works fine, so the line must work in some
way.

PaulH

On Thu, 2006-09-28 at 12:42 -0700, Scott Stingel wrote:
> Hi Paul-
> 
> Just checking that you have a proper E1 crossover cable?  (not a CAT5/6 
> crossover or patch cord - they are not the same)
> 
> Crossover is wired as per:
> 
> http://www.evtmedia.com/designersFAQ.htm#Make%20E1/T1%20crossover
> 
> Most likely you would need a straight-thru cable for your application I 
> would think, not a crossover, but I mention it anyway.
> 
> Best regards,
> Scott Stingel
> 
> evtmedia.com
> 
> 
> Paul Hales wrote:
> > I am setting up an E1 crossover system for a customer, with a Siemens
> > Hipath Officecom 150 system.
> > 
> > And it's not working - I get a red alarm from the outside world, and a
> > yellow from the PABX.
> > 
> > Any ideas? We have tried E1 crossovers and straight cables on both
> > connections, with no more luck.
> > 
> > Frame type? Cabling? Timimg?
> > 
> > Any ideas at all? Anyone?
> > 
> > PaulH
> > 
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