Multitech MT5600DSVD2, User Manual

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MultiModemDSVD User Guide
44
S-Registers
Certain modem values, or parameters, are stored in memory locations called S-
registers. Use the
S command to read or to alter the contents of S-registers (see
previous section).
Register Unit Range Default Description
S0 1 ring 0, 1–255 1 Sets the number of rings before the
modem answers.
ATS0=0 disables
autoanswer completely.
S1 1 ring 0–255 0 Counts the rings that have occurred.
S2 decimal 0–127 43 (+) Sets ASCII code for the
128–255 escape sequence character. Values greater
than 127 disable escape.
S3 decimal 0–127 13 (^M) Sets the ASCII code for the carriage return
character.
S4 decimal 0–127 10 (^J) Sets the ASCII code for the line feed
character.
S5 decimal 0–32 8 (^H) Sets the ASCII code for the
33–127 backspace character. Values greater than
32 disable backspace.
S6
seconds 2–255 2 Sets the time the modem waits after it goes
off-hook before it begins to dial the
telephone number.
S7 seconds 1–255 50 Sets the time the modem waits for a carrier
signal before aborting a call. Also sets the
wait for silence time for the @ dial
modifier, and the time the modem waits
for the dial tone after encountering
W in
the dial string.
S8 seconds 0–255 2 Sets the length of a pause caused by a
comma character in a dialing command.
S9 100 ms 1–255 6 Sets the time, in tenths of a second, that
the carrier must be present before the
modem considers it valid.
S10 100 ms 1–255 14 Sets how long a carrier signal must be lost
before the modem disconnects.
S11 1 ms 50–255 95 Sets spacing and duration of dialing tones.
S12 20 ms 0–255 50 Defines the maximum period, in fiftieths
of second, allowed between receipt of the
last character of the three escape character
sequence from the computer and the
sending of the OK result code to the
computer. (Escape code guard time).