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Chapter 4 - Software
Modem Setup Screen
The Modem Setup screen displays a two Modem Configuration for the MA220; four Modem Configuration
for the MA420 model, or eight modem configuration for the MA820 model. The Modem Setup screen
defines the Modem Sharing behavior and general modem parameters, Country Code and number of rings
before auto answer.
Prior to software release 1.03, the ports were configured for either RAS or modem sharing, for which they
were then dedicated to just that role. Now, with software release 1.03, both roles are automatically
enabled, alleviating the need for administrator intervention when either role is desired.
Still, only one application can use the modem at a time. If there is not a Telnet session connected to the
POTS port, an incoming call will be handled by the MultiAccess as a RAS call. When there is an active
Telnet session connected to the POTS port, the modem's configuration and behavior is then controlled by
the application that opened the session, be it for inbound or outbound calls.
The TCP port used by Telnet to access the modem is dependent on how the Modem Sharing Pool option
is used. If this option is set to "pool", port 6000 is used. All POTS modem ports set to pool, 6000, must
have the same exact Modem Sharing options, with or without authentication, etc. When a Telnet client on
the LAN opens a connection to 6000, it is given the lowest number POTS modem port in the pool that is
available.
If this option is set to "non-pool", then a specific 7000+ number is sequentially associated to each POTS
modem. POTS modem 1 is assigned 7000, POTS modem 2 assigned 7001 and so on incrementally
through POTS modem 8 with 7007 for a MA820 unit.
Modem Sharing with authentication means a login prompt will be issued to the socket when it is opened.
Who (what) ever opened the socket must provide appropriate credentials before access is given to the
modem. When Modem Sharing with Radius Authentication is selected, the Radius server that will be
used is defined in the Authentication menu.
When Modem Sharing with Local Authentication is selected, credentials (users) shown in the Local Users
menu are to be used.
When Modem Sharing with RAW is selected – support for RFC 2217 (com port control via Telnet) will be
disabled.
When access is granted to the modem, an "OK" response message will be issued.
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Multi-Tech Systems, Inc. MultiAccess User Guide
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