AT&T MERLIN LEGEND Release 3.1 System Programming Manual page 89

Connecting the PC
Local Modem Connection
For a local modem connection, you must use a modem (either connected to, or
built into the PC) to access the internal modem in the control unit. Connect the
modem to an 012 or 016 module in the control unit, as shown in Figure 2–3.
The internal modem operates at speeds of 1200 and 2400 bps.
Figure 2–3. Local Modem Connection
Remote Modem Connection
For a remote modem connection, you must use a modem (either connected to,
or built into the PC) to access the internal modem in the control unit. You must
also use a dial-up connection, as shown in Figure 2–4. See "Accessing SPM" for
details on accessing SPM with a remote modem connection.
The internal modem operates at speeds of 1200 and 2400 bps.
Serial
Communications
012
Port
Port
RS-232
MODEM
Tur n
pow off
inse er befo
rem rting re
ovin or
mod ules g
AG INPUT AG INPUT
Programming with SPM
2–11