ComStar SVD Owner’s Manual
20
string based on the device you select during installation. The
commands remain in effect throughout the communications
session, unless the software sends other commands to override
them.
The software uses other AT command strings for other purposes.
For example, when you make a call, the software inserts AT
commands in a
dial string before the phone number you are
calling. You typically can use the AT command strings that are
provided with the software.
It is sometimes necessary to add other AT commands to the
strings as suggested in the section Tips for Selecting Setup
Options below and in Chapter 3. For a table of AT commands,
see Appendix E.
Tips for Selecting Setup Options
In setting up some older software programs, you may be asked
to enter certain information. Most programs have default settings
that are correct for use with this modem, and there is no need to
change them. However, you should be aware of the following
items:
Q
If you are asked to select the “modem type” from a menu, and
you don’t see this modem listed by name on the menu, select the
most descriptive name such as Zoom FaxModem, any SVD
modem, Rockwell Based Voice modem, Hayes-compatible
modem (with or without a specific speed), or Generic Class 1
Modem. The more generic the type you choose, the less likely
that the software will let you use some of the ComStar SVD’s
advanced features, but the modem will perform basic
communications and fax functions.
Q
In the dialing directory, all entries should be set to 115,200 bps
(115.2K baud). All communications between the computer and
the modem take place at 115,200 bps, independent of the
modem-to-modem speed. The modem auto-negotiates the
highest speed connection between itself and the other modem.
Q
If there is a section of your software called “Terminal Settings,”
make sure that Hardware Flow Control (RTS/CTS
is ON (or
YES). This is necessary in order for V.42bis file transfers to
work.