User`s guide

8.4. Modem Mode
In addition to allowing data transfer, the Modem Mode also
provides additional functions specifically related to modem
communication. A Modem Mode Port can perform all functions
normally available in Any-to-Any Mode. The Modem Mode is
available to all APS RS232 ports. In addition to allowing
configuration of the APS-8M's internal modem, the Modem
Mode also simplifies the process of connecting an external
modem to Ports one through seven.
Note: Port 8 (the internal modem port) is always
configured for the modem mode. Port 8 cannot be
configured as an Any-to-Any Mode, Buffer Mode or
Passive Mode port.
When the Modem Mode is selected, the port configuration menu
(command /P) will display three additional prompts, which allow
the user to re-define the modem reset string, initialization string,
and hang-up string. When the Modem Mode is selected for a
port with Supervisor Level command access, the Supervisor
Password should be defined. This will discourage unauthorized
access to higher command functions.
When a call is received, the unit will prompt the caller to enter a
password. The APS allows three attempts to enter a valid
password. If the correct password is not entered in three
attempts, or if the user does not respond to the password prompt
within 30 seconds, the modem will disconnect. The password
can be defined and enabled by invoking the /P command as
described in Section 5.5.3.
Notes:
·
When a Modem Mode Port exits Command Mode,
or the DCD line is lost while the Command Mode
is active, the APS will pulse the DTR line to the
modem. The unit will then send the user-defined
modem command strings to make certain the
modem is properly disconnected and reinitialized.
·
All APS-8M RS232 ports can use both the unit's
internal modem and external modem(s) installed at
another RS232 port, providing that the port
password allows access to the desired modem port.
To call out, invoke the /C command to connect to
the port, and then access the modem as you
normally would.
8-9
Operation