Connecting The Pc; Direct Local Connection - AT&T MERLIN LEGEND Release 3.0 System Programming Manual

Connecting the PC

Connecting the PC
There are three ways to connect the PC to the control unit. Choose the method
below that is most useful for your installation.

Direct local connection

Local modem connection
Remote modem connection
Direct Local Connection
For a direct local connection, you must connect the PC to the system
programming jack. This is the lower modular RS-232 jack on the processor
module, as shown in Figure 2–1. (The upper jack is reserved for the SMDR
printer. )
To connect a PC more than fifty feet from the control unit, see Figure 2–2.
For direct local connections, the system supports speeds of 1200 and
2400 bps.
NOTE:
You must use a direct local connection to program in surrogate mode.
Figure 2–1. Direct Local Connection
Serial System
Communications
Programming
Port Jack
D8W
RS-232
Programming with SPM
2-9