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Appendix D - Cabling the LX-4000 Series
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MRV Communications, Inc. www.mrv.com 451-0308
10/100 Connector
Figure 24 shows the standard 10/100 (RJ-45 jack) connector signal assignments.
Figure 24 - 10/100 Connector Assignments
Ordering Cables
MRV also supplies crossover cables and modular adapters for use with all LX-4000 Series units. To
order cables, adapters or other cabling accessories from MRV, contact your Sales representative or
distributor.
Modular Adapters
MRV provides the following modular adapters for use with LX-4000 Series units:
• Female DB-9 (PN MX-350-0308)
• Female DB-25 (PN MX-350-0181)
• Male DB-25 (PN MX-350-0179) – supports RING
• Male DB-25 (PN MX-350-0180) – supports RTS/CTS
This section describes the pinouts and wiring of the MRV-supplied DB-25 adapter.
Pin Assignments
The following table shows the pinouts for a standard RS-232 DB-25 connector.
Pin Signal
1 Cable Shield
2 Transmit Data
3 Receive Data to DCE
4 RTS (Request to Send)
5CTS (Clear to Send)
6 DSR (Data Set Ready)
7Signal Ground
8 Data Carrier Detect
8 7 6 5 4 3 2 1
Pin Signal
1 TX+
2 TX-
3 RX+
4 No Connect
5 No Connect
6 RX-
7 No Connect
8 No Connect