Multitech MultiModem ZPX MT5634ZPX-PCI Series, Руководство пользователя

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Owner’s Manual
22 MT5634ZPX-PCI
Operating Your MultiModemZPX-PCI
You control your MultiModemZPX-PCI by issuing AT commands and
setting S-registers. Since your MultiModemZPX-PCI is set up for
typical user application—traditional modem set to make a dial-up call
to a remote installation where the call is answered automatically—you
shouldn’t need to change the current default configuration. (If you
know your application does not follow this profile, refer to Chapter 3
for AT commands and S-registers.)
In operating your MultiModemZPX-PCI, it is likely that you will use
your data communications software to either:
• Enter
terminal mode, where you can speak most directly to the
modem by issuing AT commands, or
• Launch a data communications session through a set of modem
configurations that you select and then associate with a target
telephone number. Once you create, save, and name this set of
information according to your connection needs and your datacomm
software’s conventions, the software simplifies dialing because you
don’t have to reconfigure the modem nor have the risk of typing
incorrect information.
Either way, be aware that an AT command is the method by which
your modem is controlled and must therefore prefix nearly all
commands. AT stands for attention and alerts the modem that a
command follows. You can enter AT commands with uppercase or
lowercase characters. Once you’re in terminal mode, enter AT
followed by <cr> to check whether your modem is operational. If
everything is fine, your modem responds OK .
Simple Operation
You can dial by using the ATD command and the phone number of the
modem you want to connect with, e.g., ATD6127853500 . Your
modem dials the number and makes a scrambling noise as the modem
negotiates the kind of connection it can make. Once the modems settle
on a common connection, a connect message on your computer’s video
displays. To hang up, enter +++ATH0<cr> . The modem hangs up and
your video displays OK , signifying it is ready for another command.