12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 69
Installing the SSU-2000
Making Connections
Making Communication Connections
The rear panel of the SSU-2000 shelf has connections for three communications
interfaces, two EIA-232 Serial Port connections, and one Ethernet connection.
These ports allow communication between the SSU-2000 and a terminal or PC.
Each port is configured independently.
Refer to Table 2-2 for the serial and Ethernet communications port assignments.
EIA232 Serial Port Connections
Both RS-232 serial port connections are made through filtered DE9S female
connectors on the rear panel. These ports allow connection to a terminal or PC for
remote monitoring and control. One is on connector J4 and is labeled Serial Port A,
the other is on connector J5 and is labeled Serial Port B. When connecting to these
ports, use a shielded direct-connect cable with the shield connected to pin 1.
Note: A third EIA-232 serial port may be connected to the
Communications module. Refer to Communications Module, on page
136, for more information.
Table 2-2. Communications Port Assignments
Port # Function Protocol
Serial Ports (EIA-232)
A (J4) User-selectable as either an ICS or a TL-1 interface. The
port defaults to ICS upon initialization
ICS (Default), TL-1
B (J5) User-selectable as either an ICS or a TL-1 interface. The
port defaults to ICS upon initialization
ICS (Default), TL-1
Local (Comms
Module)
User-selectable as either an ICS or a TL-1 interface. The
port defaults to ICS upon initialization
ICS (Default), TL-1
Ethernet Ports (Telnet)
23 User-selectable as either an ICS or a TL-1 interface. The
port defaults to ICS upon initialization
ICS (Default), TL-1
123 This port is designated for NTP only NTP
161 This port is designated for SNMP Interactive SNMP Interactive
162 This port is designated for SNMP Trap transmission SNMP Trap
2000 This port is designated for TL-1 only TL-1
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