Cable, CompactFlash and Accessory Specifications
A-12
T1/E1/ISDN PRI NIM Card Ports
The T1/E1/ISDN PRI NIM, as shown in Figure A-12, comes equipped with either 1, 2 or 4
Ethernet (WAN) ports that support fractional T1/E1 transmission in full-channel, fractional or
unchannelized format with 8-pin modular RJ-48C connectors and include a built-in DSU/CSU.
Cables required for these ports must be 100-ohm, straight-through, twisted-pair for T1 lines and a
120-ohm version for E1 lines. Refer to FigureA-13 for pinout assignments.
Figure A-12 4-Port T1/E1/ISDN PRI NIM Card (RJ-48C ports shown)
Figure A-13 T1/E1 NIM Port Pinouts
Regulatory/Safety Compliance
The T1/E1 ISDN PRI NIM complies with these regulatory requirements: PCI Local Bus
Specification Rev 2.1, IEEE P1386 Draft 2.4, IEEE P1386.1 Draft 2.4, ANSI T1.403, ITU-T G.703,
G.704, G.706, G.736, G.775, G.823, I.431, Q.703, AT&T TR62411 and TR54016, ETSI ETS 300233, and
IEEE 1149.1.
The NIM also complies with the following safety requirements: CS03, FCC Class B, TBR12-14, GR-
1089, ITU K17-K20, IEC 61000-4-2, IEC 61000-4-5, UL 1950, IEC 950, and EN 60950.
Note: If you are using the TI/EI/ISDN PRI NIM in Singapore or Australia, the cables required for
these ports must not employ individual shields for each pair.
Pin Signal
1 Receive Ring
2 Receive Tip
3 Chassis GND (optional)
4 Transmit Ring
5 Transmit Tip
6 Chassis GND (optional)
7 no connection
8 no connection
T1/E1/ISDN PRI
Pin 8Pin 1