User Manual

Modems Modem Profiles
9-6
Commandprefix string
This string is placed before all commands sent to the modem except for the
Attention string. In the unlikely event that your modem doesn’t use a common
command prefix for all commands, this string should be left blank; include the
appropriate command prefix in every string sent to the modem. It is commonly
set to "at."
Compression Enabled/Disabled
This setting enables or disables the modem’s data compression.
Note: See Compression on page 9-9 for a complete description.
Compression Command disablestring enablestring
These strings cause the modem to compress data or to let data pass
uncompressed. Note that compression often causes higher latency on a line in
return for higher throughput.
Connected string
The modem must respond with this string after it connects with a remote
modem. The modem may respond with other strings as well, but they will be
ignored. It is commonly set to "CONNECT."
Dial string
This string is sent after the Command Prefix but before the telephone number
to be dialed. Commonly, touch tone dialing is activated with "dt" and pulse
dialing is activated with "dp."
Error string
The modem should respond with this string when it detects an error. It is
commonly set to "ERROR."
Errorcorrection Enabled/Disabled
This setting enables or disables the modem’s error detection and error
correction.
Note: See Error Correction on page 9-10 for a complete description.
Errorcorrection Command disablestring enablestring
These strings cause the modem to use error correction or to let data pass
uncorrected. Note that correction often causes higher latency on a line in return
for data integrity.
Getsetup string
This string displays the modem’s current configuration. The SCS uses this
information to determine if the modem’s configuration has changed. It is
commonly set to “&v.”
When most modems receive the Get Setup string, they’ll return one page that
lists their configuration. The SCS will not function properly if more than one
page of configuration information is sent (prompting the user to press a key to
continue to the next page); if your modem is configured in this manner, the Get
Setup string will need to be set to “”. When Get Setup is set to “”, the modem
will not be queried for its configuration; instead, the SCS will write the
modem’s NVR each time the SCS is booted.