Multi-Tech Systems MT5634ZPX - Manual (Page 23)

MT5634ZPX 23
2 Installation
Operating Your MultiModemZPX
You control your MultiModemZPX by issuing AT commands and
setting S-Registers. Right now your MultiModemZPX is set up
for the most typical user application, that is, as a traditional
modem set to make a dial-up call to a remote installation where
the call is answered automatically; therefore, you shouldn’t need
to change the current default configuration. (If however, you
know that your application does not follow this profile, please
refer to Chapter 3 for AT Commands and S-Registers.)
In operating your MultiModemZPX 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 to
• launch a datacomm session through a set of modem
configurations which you select and then associate with a
target telephone number. Once you have created, saved,
and named this set of information according to your
connection needs and your datacomm software’s
conventions, the software then simplifies your dialing
because you needn’t reconfigure your modem, nor run the
risk of mistakenly keying-in incorrect information.
Either way, you need to understand 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 may enter these
commands with either upper- or lower-case characters. Once
you’re in terminal mode, enter AT followed by to check
whether your modem is operational. If everything’s fine, your
modem will respond
OK .