Splitting a CAT5E (or better) cable to extend two T1/E1 circuits
Every once in a while there is one too few cables between your customer's POP (point of presence) and their equipment room. We suggest a solution here that is in no way standard although known to work on distances not exceeding 500ft ( approx. 150 m). The actual choice of pairs (especially for the second RJ48) is completely optional for as long as you keep the transmit and receive pairs as such - a twisted pair. Do not split the pairs - this will very effectively kill the signal within short distance from the smart jack. Use at your own risk.| Splitting a CAT5E cable between two T1/E1 circuits. Straight-through cable |
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Some customer equipment requires a cross-connect T1 cable: transmit and receive pairs are swapped on the other end
| Splitting a CAT5E cable between two T1/E1 circuits. Crossover cable |
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| T1/E1 RJ48 Pin Assignments | |||||||||||||||||||||||||||
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