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Asked by robcambra in Telecommunications Providers, Networking Cables, Miscellaneous Hardware
I want to understand the standard usage for a 25-pair CAT5e cable. There is some conflicting information Im reading about how to use this type of cable. My application is for 1000Base-T from a 110-style panel to another 110-style panel. One side of the cable will be terminated to a CAT5e (RJ45) keystone panel (Panduit) and the other end terminated to a standard 110-style punch-down 24-port panel (Hubbell).
The information I dug up so far seems to conflict. Some in the Ethernet/Datacom field say you cannot use a 25-pair CAT5e cable in this fashion because the pairs in a 25-pair cable are twisted differently than a standard 4-pair CAT5e cable due to unique NEXT reduction requirements. The only use for a 25-pair CAT5e cable, according to this camp is with a special panel that only accepts pre-manufactured 25-pin connectors. Others say that there is no issue using a 25-pair CAT5e cable in the way my application proposes.
My question has two parts; 1) Can a 25-pair CAT5e cable be terminated end-to-end on two standard 110-style panels? 2) If so, is there a standard color/pin-out due to the fact that after pair #4, I have no idea what color combinations to use (I could figure it out, but want to adhere to standards if any).
20091118-EE-VQP-93 / EE_QW_2_20070628
