In these cases, the Transmit and Receive pairs are in different binders.
Thus electrically isolating by virtue of how the binders are wrapped with
each other and how the pairs are twisted within the binders.
Bart
----- Original Message -----
From: "Kevin P. Fleming" <[EMAIL PROTECTED]>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<[email protected]>
Sent: Monday, April 24, 2006 9:27 AM
Subject: Re: [Asterisk-Users] Re: Shielding of T1/E1 cables WAS RE:
Pinoutsfor T1/E1 crossover
Andrew Kohlsmith wrote:
Insulation (especially such thin insulation) does not prevent crosstalk.
Distance, shielding and tighter twists do.
Ever looked at the underground cable in the street outside your
building? If it's more than 20 years old, it's probably paper-insulated
gel-filled cable, with an _extremely_ thin amount of insulation between
the conductors and _zero_ insulation between the pairs. T1s seem to work
just fine on it, unless it's very old or they try to put more than 6-8
spans in a single 100-pair bundle :-(
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