Configuring The Modem; Sample Configuration 1 - SimpleTech STI-FAX/28.8 User Manual

Configuring the Modem

By default, your modem is set up to automatically detect the
appropriate line speed, use hardware flow control, and connect
using error correction and data compression protocols, if possible.
These settings are stored in read-only memory (ROM) at the
factory and can be recovered at any time by issuing the &F0
command, described later in the chapter. If the factory settings do
not meet your needs, (say for instance, your software does not
support hardware flow control), you can define and store your
own configurations into nonvolatile memory using the &Wn
command. You can then recover these configurations at any time
with the Zn command. Both &Wn and Zn are described more fully
later in the chapter.
These stored configurations are called profiles. Not all AT
command settings and S-registers can be stored as a part of a
profile. The ones that can be stored are so noted. Several sample
modem configurations are shown below. These are examples of
profiles you might store in memory as your user-definable
profiles. You can store two user-defined profiles.

Sample Configuration 1

One useful configuration is obtained by typing AT &F0 &C1
&D2 &W0 <Enter>. These commands have the following effect:
• &F0 restores the factory default configuration, turning on
line speed detection, hardware flow control, error correction,
and data compression. In other words, if the remote modem
will allow it, your modem will use all of its most advanced
features.
• &C1 forces the carrier detect (CD) signal to follow the state
of the carrier. This allows your communications software
to properly determine whether the modem is on-line or
off-line.
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