Table of Contents
Advertisement
COM Port Interface
The COM port connects to a PC for front panel emulation, to an ASCII terminal or
printer for alarms, to an asynchronous terminal, to a network device (e.g., a
router) for SNMP or Telnet applications, or to a LAN Adapter for SNMP or Telnet
applications. (The SNMP LAN Adapter includes the cable that is needed to attach
it to the DSU/CSU.) The COM port connector is an 8-position unkeyed modular
connector (Table D-6). The data signals on this port are referenced to a DTE
interface.
The COM port-to-PC cable is shown in
port-to-terminal/printer cable is shown in
3166-A2-GB20-20
Table D-6. COM Port Connector
Signal
DCE Transmit Clock
DCE Receive Data
Signal Ground
DCE Transmit Data
DCE Data Terminal Ready
DCE Carrier Detect
DCE Request-to-Send
DCE Receive Clock
March 1999
Figure D-6
and the COM
Figure
D-7.
Direction
From DSU/CSU
From DSU/CSU
—
To DSU/CSU
To DSU/CSU
From DSU/CSU
To DSU/CSU
From DSU/CSU
Pin Assignments
Pin Number
1
2
3
4
5
6
7
8
D-9
Advertisement
Table of Contents
