Configuration Modem Cards
4-18
A properly installed modem card will be treated like an additional MSS serial port. If only one card is
installed, it will always appear as Port 5. If two cards are installed, the card installed in the top slot (slot 1)
will appear as Port 5 and the card in the bottom slot (slot 2) will appear as Port 6. The Show Port and
Logout Port commands will respond appropriately to the modem card ports.
The modem ports will always have modem control enabled and should respond to a standard Hayes-style
AT command set. However, you should not configure the modem—its default configuration will work
properly with the MSS. If you change the reply codes and status strings, the MSS may not be able to respond
correctly. This is in contrast to most other types of PC cards, which the MSS cannot use until properly
configured.
SDK users can access the ports by using device “tt4” for Port 5 or “tt5” for Port 6. See your SDK
documentation for more information on the SDK environment.
Incoming Calls
The MSS will attempt to answer any incoming call that it detects. You will get a Local> prompt after the
modems are fully connected.
Outgoing Calls
To make a call from the MSS modem port, you must connect to the modem card via Telnet or a local serial
port. You can then issue AT commands to the modem to dial out.
To connect to the modem from a local serial port, use the Connect Local command.
Figure 4-45: Connecting to the Modem
To connect to the modem from the network, Telnet to the modem port (port 2005).
Figure 4-46: Connecting to the Modem
Local> CONNECT LOCAL PORT_5
% telnet 192.0.1.35 2005
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