Specifications

158 MultiModemISI Hybrid Series, ISIHI-2S/2U
Appendix
Appendix J: S-Register Summary (Modem)
REGISTER UNIT RANGE DEFAULT DESCRIPTION
S0 1 ring 0, 1255 0 Sets the number of rings before the modem answers.
ATS0=0 disables auto answer completely.
S1 1 ring 0255 0 Counts the rings that have occurred.
S2 decimal 0255 43 (+) Sets ASCII code for the escape code character.
Values greater than 1227 disable the escape sequence.
S3 decimal 0127 13 (^M) Sets ASCII code for the RETURN character.
S4 decimal 0127 10 (^J) Sets ASCII code for the LINE FEED character.
S5 decimal 0127 8 (^H) Sets ASCII code for the BACKSPACE character. Valuesgreater
than 32 disable the backspace character.
S6 1 sec 265 2 Sets time the modem waits for dial tone before canceling call.
4255 4
47
S7 1 sec 1255 50 Sets time the modem waits for carrier signal before aborting call.
145 45 Also sets the wait for silence time for the @ dial modifier.
155 55
S8 1 sec 065 2 Sets length of pause caused by comma character in dialing
command.
4255
47 4
44
S10 100 ms 1254 20 Sets how long carrier signal must be lost before modem
disconnects.
S11 1 ms 50150 95 Sets spacing and duration of dialing tones. Minimum: 50 ms
80255 80
80255
S28 decimal 0, 1255 1 0 disables, 1255 enables V.34 modulation.
S35 decimal 01 0 0 disables, 1 enables the V.25 data calling tone, which allows
data/fax/voice discrimination.
S37 decimal 0119 0 Sets the maximum dial line rate.
0 = maximum speed
1 = reserved 11 = 14400 bps
2 = 1200/75 bps 12 = 168000 bps
3 = 300 bps 13 = 19200 bps
4 = reserved 14 = 21600 bps
5 = 1200 bps 15 = 24000 bps
6 = 2400 bps 16 = 26400 bps
7 = 4800 bps 17 = 28800 bps
8 = 7200 bps 18 = 31000 bps
9 = 9600 bps 19 = 33600 bps
10 = 12000 bps