S-Registers - Multitech MULTI MODEM II MT5600BL User Manual

MultiModemII User Guide

S-Registers

Certain modem values, or parameters, are stored in memory locations called S-
registers. Use the S command to read or alter the contents of S-registers (see previ-
ous section).
Register Unit
S0
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
4 AT Commands, S-Registers, and Result Codes
Range Default
1 ring 0, 1–255 1
1 ring 0–255 0
decimal 0–127 43 (+)
128–255
decimal 0–127 13 (^M) Sets the ASCII code for the carriage return
decimal 0–127 10 (^J)
decimal 0–32 8 (^H)
33–127
seconds 2–255 2
seconds 1–255 50
seconds 0–255 2
100 ms 1–255 6
100 ms 1–255 14
1 ms 50–255 95
20 ms 0–255 50
Description
Sets the number of rings before the modem
answers. ATS0=0 disables autoanswer
completely.
Counts the rings that have occurred.
Sets ASCII code for the escape sequence
character. Values greater than 127 disable
escape.
character.
Sets the ASCII code for the line feed
character.
Sets the ASCII code for the backspace
character. Values greater than 32 disable
backspace.
Sets the time the modem waits after it goes
off-hook before it begins to dial the phone
number.
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.
Sets the length of the pause caused by a
comma character in a dialing command.
Sets the time, in tenths of a second, that the
carrier must be present before the modem
considers it valid.
Sets how long a carrier signal must be lost
before the modem disconnects.
Sets spacing and duration of dialing tones.
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 send-
ing of the OK result code to the computer
(escape code guard time).
48