Enterasys Networks XSR-3020 - Manual (Page 100)

Cable, CompactFlash and Accessory Specifications
A-14
Installing Shunt/Terminal Strip
To install the shunt or terminal strip, attach two dual-pin units vertically to each four-pin jumper
(P2, P3, P4, or P5) corresponding to the RJ-48C port using a balun, as shown in
Figure A-16 . Any
other RJ-48C ports on the NIM card connected to 120-ohm lines do not require shunts.
Figure A-16 Installing a Grounding Shunt on the E1 NIM Card