Pinouts for T1/E1 crossover cable WAS "RE: [Asterisk-Users] what cable to connect a legacy PBX to a TE410P ?"

[Kevin P. Fleming]

Rich Adamson wrote:

> Oh, and if shielded T1 cable is used, the shield at each end of the
> cable must be grounded. (Let's see how many can figure out how to do
> that via an rj45 plug. ;)

You use shielded plugs and jacks, of course :-) That is why the
TE405P/TE410P have shielded jacks (as of about a year ago, IIRC). The
retail packaged cards even ship with four shielded cables included!

Minor point: isn't it safer to only ground the shield on one end?