Smc-networks SMC7500A/VCP Manuel d'utilisateur télécharger pdf (Page 29)

ROSSOVER

ABLE

Crossover Cable

If the twisted-pair cable is to join two ports and both ports are labeled with

an “X” (MDI-X), or neither port is labeled with an “X” (MDI), a crossover

must be implemented in the wiring.

RJ-11 Ports

Standard telephone RJ-11 connectors and cabling can be found in several

common wiring patterns. These six-pin connectors can accommodate up

to three wire-pairs (three telephone lines), but usually only one or two pairs

of conductor pins and wires are implemented.

The RJ-11 ports on the side of the TigerAccess Extended Ethernet CPE

contain two wire-pairs, an inner pair (pins 3 and 4) and outer pair (pins 2

and 5). On the LINE port, the inner wire-pair carries both voice and

digital data. On the PHONE port, the inner wire-pair carries voice only.

Crossover RJ-45 Pin Assignments

End 1 End 2

1 (TD+) 3 (RD+)

2 (TD-) 6 (RD-)

3 (RD+) 1 (TD+)

6 (RD-) 2 (TD-)

1 2 ... 24 25 26 27 28 29 30 31 32 33 34

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Smc-networks SMC7500A/VCP Manuel d'utilisateur Page 29