ISDN Interfaces
5-16
Strata CTX I&M September 2002
will have the locking tab of the plug on one end, “up;” and on the other end, “down,” as shown in
Figure 5-13.
A cord of up to 10 meters connects the ISDN BRI RJ45 wall jack to the desktop TE-1 or TA RJ45 jack.
Figure 5-13 Modular ISDN Data Cable
Table 5-6 TIA-568B (RJ45) Jack – ISDN Standard Interface Modular Connector Pinout (RBSU-NT mode)
Notes
◆
Pins are numbered left to right when looking into the jack cavity with the locking tab down.
Pin Colour Name Function
1 T2 (not used)
2 R2 (not used)
3 White/Blue R3 RX+
4 Blue/White R1 TX+
5 White/Green T1 TX-
6 Green/White T3 RX-
7 T4 (not used)
8 R4 (not used)
3039
Four-pair Wire
RJ-45
Eight-pole Plug
Locking Tab
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