AT&T MERLIN LEGEND Release 3.1, Руководство по системному программированию

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Accessing SPM
2–12
Programming with SPM
CAUTION
POWER
ON
OFF
AG INPUT AG INPUT
FR FR
GND
GND
Turn of
f powe
r befo re inserting or
removing
modules
408 GS/LS
44GS or LS Outside Lines/ 8 Analog
Telephones
(A
TL)
408
008 MLX 8 MLX (Digital)
Telephones
012
PROCESSOR
RS-232
Serial
Communications
Port
Incoming
trunk line
Public or private
telephone network
MODEM
Figure 2–4. Remote Modem Connection
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 console 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
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
To access SPM when your PC is connected directly to the control unit, follow the
steps below.
1 Set up the appropriate physical connections between the PC and the control
unit.