[Asterisk-Users] TE410P Errors under load

[Brian D Heaton]

One of the simplest ways to make a T-1 (E-1) crossover is to take a dual
RJ-45 biscuit and do the crossover inside it.  Label it as a crossover
with a Sharpie.  Then you can use two normal cables.  I always had at
least one of these in my kit when I was doing field work.

			THX/BDH


On Sat, 2003-11-22 at 19:45, Scott Stingel wrote:
> Yes, that's true how the pairs are formed, and its also true that a (short)
> ethernet cable can normally be used as a straight through E1/T1 cable, since
> all wires are connected.
> 
> We need an E1 crossover cable for the tests we're running, and so we have to
> make one, because an ethernet crossover cable will not work.
> 
> For anyone trying to make an E1/T1 crossover, here's a nice diagram from NMS
> that may help.  The only pins that are needed in a short cable for testing
> are 1,2,4,5.
> 
> Click on:
> http://www.nmscommunications.com/NMS/nms_technotes.nsf/0/91d49c8785b2aab0852
> 566fa0050740a?OpenDocument
> 
> Cheers
> Scott
> 
> Scott M. Stingel 
> Emerging Voice Technology Inc.
> 
> Email:          scott at evtmedia.com <mailto:scott at evtmedia.com>   
> URL:            www.evtmedia.com <http://www.evtmedia.com>   
> 
> 
> 
> > -----Original Message-----
> > From: asterisk-users-admin at lists.digium.com 
> > [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
> > Brian D Heaton
> > Sent: Saturday, November 22, 2003 10:04 PM
> > To: asterisk-users at lists.digium.com
> > Subject: RE: [Asterisk-Users] TE410P Errors under load
> > 
> > 
> > A 568B Ethernet cable will be paired as follows:
> > 
> > 1 ORG-WHT
> > 2 ORG
> > 3 BLU
> > 4 GRN-WHT
> > 5 GRN
> > 6 BLU-WHT
> > 7 BRN-WHT
> > 8 BRN
> > 
> > As you can see you still maintain twisted pair integrity for T1
> > applications (1-2, 4-5), as well as Ethernet (1-2, 3-6).  The primary
> > issue would be shielding as most Ethernet cables aren't shielded.
> > 
> > 			THX/BDH
> > 
> > 
> > 
> > On Sat, 2003-11-22 at 13:43, Ray Burkholder wrote:
> > > Might you be getting problems because you are using an 
> > Ethernet cable?  If
> > > my memory serves correctly, an Ethernet cable is paired 
> > differently than an
> > > E1/T1 cable.
> > 
> > 
> > _______________________________________________
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> > 
> > 
> 
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