[asterisk-users] ISDN PRI configuration

Dan Austin Dan_Austin at Phoenix.com
Thu Dec 8 11:11:00 CST 2011


Tony wrote:
>Kevin P. Fleming <kpfleming at digium.com> wrote:
>> 
>> As I said before... an Ethernet cable will work nearly all the time, and 
>> at a 5m length it's probably fine.

> Kevin, under what circumstances would an Ethernet cable potentially not
> work with T1/E1? And in those circumstances, what should be used instead?
> I'm wondering because I had never realised it was an issue until you said.

I've never had an issue with using Cat5 cable, but I have run into telco/techs
that choose to use a pin out other than 1245, and of course defend it with
'That is our standard way to do it'.  So a standard Ethernet cable would fail,
but once one end was cut off an replaced with the required pin out it would
work fine (but no longer be an Ethernet cable, semantics but important).

Dan



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