Specifications

Optimux-XLT1 Installation and Operation Manual Appendix A Interface Specification

Control Connector A-5

A.5 Control Connector

Connector Pin Assignment

The optional RS-232 control port has a standard ITU-T V.24 DTE interface. The

physical interface is a 25-pin female connector, designated CONTROL/MNG. The

pin assignment of the CONTROL/MNG connector is indicated in Table A-5.

Table A-5. ITU-T V.24 CONTROL/MNG Connector Pin Assignment

Pin Designation Function V.24 Circuit Direction

1 CHAS Frame Ground 112 –

2 TD Transmit Data 103 Output

3 RD Receive Data 104 Input

4 RTS Request-to-send 105 Output

5 CTS Clear-to-send (not connected) 106 Input

6, 9–19,

21–25

– Not connected – –

7 SG Signal Ground 102 –

8 CD Carrier Detect (not connected) 109 Input

20 DTR Data Terminal Ready 108.1 Output

Cable Connection

If you do not wish to connect the Optimux-XLT1 to an ASCII terminal through a

modem, use a standard null-modem cable (EYN-251), or prepare a cable

according to the diagram shown in Figure A-2.

DB-25

Figure A-2. Control Cable Wiring

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