Chapter 4: Connecting to the Network
Page 4-2
MicroMMAC Installation Guide
4.1.1 Connecting a 10BASE-T Segment to the
MicroMMAC-22E and MicroMMAC-24E
The MicroMMAC-22E and MicroMMAC-24E have RJ45 network ports
that support unshielded twisted pair segments. Each RJ45 port on the
MicroMMAC incorporates a Polarity Detection and Correction feature.
The Polarity Detection and Correction feature allows the MicroMMAC to
pass data regardless of the polarity of the twisted pair segment’s receive
link. Cabletron Systems does not recommend operating in this condition
and if this condition is discovered, the segment should be removed from
the network and wired correctly by a technician.
To attach twisted pair segments to the RJ45 network ports of the
MicroMMAC, perform the following steps:
1. Insert the RJ45 connector from each twisted pair segment into the
desired network port on the MicroMMAC. See Figure 4-1.
Figure 4-1
MicroMMAC-22E/24E Network Ports
2. Check that the associated LNK LED for the port is on. If the LED is
not on, perform each of the following steps until it is:
a.
Check that the 10BASE-T device at the other end of the twisted
pair segment is powered up.
b. Verify that the RJ45 connector on the twisted pair segment has the
proper pinouts. Refer to Figure 4-4.
EPIM-1
EPIM-2
6X
5X
4X
3X
2X
1X
18X
17X
16X
15X 14X
13X
EPIM-T
LNK
EPIM-T
LNK
090812
