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Joined: May 2007
Posts: 5,059 Likes: 6
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,059 Likes: 6 |
The only time you use a crossover on a T-carrier circuit is when you are going from one "smart" device to another "smart" device. When you go from a "smart" device to a "dumb" device you use a straight through cable.
A "smart" device to me, is a device that creates a T-carrier signal (i.e. a mux, a microwave radio, a channel bank etc.). A "dumb" device is a device that does NOT produce a T-carrier signal (i.e. a patch panel, a smart jack, an RJ-48x etc.).
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Dec 2002
Posts: 9,429 Likes: 3
Member
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Member
Joined: Dec 2002
Posts: 9,429 Likes: 3 |
Most people around here just run one 4 pair cable for T1s and PRI and use a normal cat 5 patch cord when extending a demarc from the smartjack into a suite. Not the best way to do it, so I've heard.
Jeff Moss
Moss Communications
Computer Repair-Networking-Cabling
MBSWWYPBX, JGAE
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