Enterasys 9C306, User Manual

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A-1
Appendix A
EPIM Specifications
Introduction
The 9C306 System Monitor provides a port for Cabletron Systems EPIMs. EPIMs
allow connection to the main network using different media types. Cabletron
Systems offers a variety of EPIMs. SpeciÞcations for these EPIMs are detailed in
the following sections.
EPIM-T
The EPIM-T is an RJ45 connector supporting UTP cabling. It has an internal
Cabletron Systems TPT-T 10BASE-T Twisted Pair Transceiver.
The slide switch on the EPIM-T determines the crossover status of the cable pairs.
If the switch is on the
X
side, the pairs are internally crossed over. If the switch is
on the = side, the pairs are not internally crossed over. Figure A-1 shows the
pinouts for the EPIM-T in both crossover positions.
Verify that the EPIM is the proper revision number before installing. Refer to
Chapter 3, The Ethernet Port Interface Module (EPIM) section for detailed
information on version numbers.
NOTE