MERLIN LEGEND Communications System Release 6.0
System Programming
555-660-111 Issue 1
February 1998
Programming with SPM
Page2-16Accessing SPM
2
Figure 2–4. Remote Modem Connection
NOTE:NOTE:NOTE:
Remote access (modem connection) has priority over local access (direct
connection), unless a backup or restore procedure is in progress through a
direct local connection. If a modem connection is attempted while any other
type of on-site programming is in progress (either at the system or at a
directly-connected PC), the system sends a message to the on-site
programmer. The message indicates that a modem connection is being
established and the on-site programming session is terminated.
Accessing SPM 2
The procedure for accessing SPM depends on whether your PC is connected to
the control unit with a modem (either local or remote) or without a modem (direct).
This section covers both of these access procedures.

With a Direct Local Connection 2

To access SPM when your PC is connected directly to the control unit, follow the
steps below.
CAUTION
POWER
ON
OFF
AG INPUT
FR
GND
Turn off
power before
inserting or
removing
modules
408 GS/LS
44GS or LS Outside Lines/
8 Analog Telephones (ATL)
408
008 MLX
8 MLX (Digital) Telephones
012
PROCESSOR
RS-232
Serial
Communications
Port
Incoming
trunk line
Public or private
telephone network
MODEM