Accessing Spm; Remote Modem Connection - AT&T MERLIN LEGEND Release 3.0 System Programming Manual

Accessing SPM

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.
See "Connecting the PC. "
2-12
Programming with SPM
Public or private
telephone network
S e r i a l
Communications
Port
RS-232
Incoming
trunk line
-