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

Страница: 89 / 887

Connecting the PC
Programming with SPM
2–11
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.
CAUTIO
N
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
012
Port
Serial
Communications
Port
MODEM
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.