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Chapter 3 – Software
Modem Setup > Modem Usage
Mixing usages usually requires hunt group coordination with your local telephone company, especially
Note:
when mixing usages within the same Line Interface. This coordination is to avoid the collision of inbound and
outbound calls or to avoid the routing of calls to a modem not set to the appropriate usage.
Modem Usage Setup
The Modem Usage Setup field contains 2 control boxes and a save button, used to change the usage of each
modem. High light a modem or range of modems (tty) in the Modem scroll box. Then use the Usage pull down
box to select the desired option. If the selected usage is one of the Modem Sharing options, the Displayed
Called Number, Reverse Dial, Raw Mode, Pool options, Idle Timer, and Monitor CD can be enabled as needed.
The SSL option can be enabled when the selected usage is one of the Modem Sharing With Authentication
otpions. After selecting the desired modems and desired options, press the Save button to invoke the changes.
After the screen refreshes the changes will be reflected in the Modem Usage table.
Modem
The Modem scroll box is used to select a particular modem(s) when changing it's usage.
Each modem (tty resource) is sequentially mapped to a specific channel of the digital Line Interface (for
example ttyMA00 is mapped to channel 1 of Line 1, ttyMA01 is mapped to channel 2 of Line 1 and so on).
The number of available modems per Line Interface is dictated by the type of digital line. When the line
interface is configured for T1-PRI, the modem usage screen displays 23 modems for example ttyMX00 through
ttyMX22 (where X = A, B, C or D depending if the Line Interface is 1, 2, 3 or 4, respectively). When the line
interface is set to T1-RBS, 24 modems are configurable (ttyMX00 thru ttyMX23). When the Line Interface is set
to E1-PRI, 30 modems are configurable (ttyMX00 thru ttyMX29).
Usage
The Usage pull down menu contains 7 options. The following is a description of each Usage:
RAS - This is the default usage. New units from the factory have all ports set to RAS. When ports are added
to the MultiAccess they come up set to RAS. RAS is an acronym for Remote Access Server. Ports set this
way are to receive inbound calls from remote nodes (PPP clients). Mircosoft's Dial Up Networking ™ is an
example of a remote node or client. The MultiAccess only supports IP (Internet Protocol) as the network
protocol transported across the dial up PPP link. Refer to the User Authentication Radius Client menu to
configure necessary PPP and remote host IP address parameters.
FAX - This usage allocates the modem to the intergrated Hylafax ™ Server. The Hylafax Server uses the
modem to send and receive faxes. Upon receipt of an inbound fax, the Hylafax server will email the fax to the
appropriate receiptiant. A Hylafax compatible Fax Client is needed to submit faxes to the server for transmitting
out bound faxes.
Modem Sharing (In General) - allows the modem to be used as a network resource. The "network resource" is
defined as a bank of modems residing on your IP network, available to application servers and\or individual
work stations. Telnet is the TCP/IP protocol in which computers access the modems in the MultiAccess. Telnet
clients (or programs that invoke telnet) must specify the appropriate TCP port number associated with the
modem when opening the Telnet socket to the MultiAccess modem. Once the telnet socket is opened, the
application using the modem resource has control of the modem as if it were attached locally to the machine
running the application. The application can make the modem dialout or answer incomng calls and control it's
behavior (speed, modulation & error control protocols, etc) via the use of AT commands.
A common dial out modem sharing application is where Com Port Redirector software (such as Multi-Tech's
WINMCSI) is installed on network workstations that have IP access to the MultiAccess. The redirector software
adds a virtual com port to the workstation. When an application uses this virtual com port, it's data is redirected
to and from the MultiAccess modem.
MultiAccess Communications Server MA30120 User Guide
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