Zyxel OLT2412 [20/326] Console port connections

Chapter 1 System Introduction

OLT2412 User’s Guide

Figure 4 ALARM Connector Pin Layout

A closed circuit on the ALARM input pins indicates an alarm.

• Pins 1 and 9 are alarm input one.

• Pins 2 and 9 are alarm input two.

• Pins 3 and 10 are alarm input three.

• Pins 11 and 10 are alarm input four

The OMC2400 signals an alarm when it detects an alarm on the ALARM input pins, the OLT is

overheated, the voltage readings are outside the tolerance levels a fan fails or another alarm

occurs.

• The signal a minor alarm, the OMC2400 opens the circuit for pins 4 and 12 and closes the circuit

for pins 5 and 12.

• The signal a major alarm, the OMC2400 opens the circuit for pins 13 and 6 and closes the circuit

for pins 14 and 6.

• The signal a critical alarm, the OMC2400 opens the circuit for pins 7 and 15 and closes the circuit

for pins 8 and 15.

Note: The alarm input is only for dry contact without any power.

1.3.3 CONSOLE Port Connections

Connect the male 9-pin end of the RS-232 console cable to the console port of the management

card. Connect the female end to a serial port (COM1, COM2 or other COM port) of your computer.

For local management, use a computer with terminal emulation software configured to the following

parameters:

• VT100 terminal emulation

• 9600 bps

• No parity, 8 data bits, 1 stop bit

• No flow control