Multi Tech Equipment ISIHI-2S Manuale Utente
MultiModemISI Hybrid Series, ISIHI-2S
157
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.
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. Values greater than 32
disable the backspace character.
S6
1 sec
2–65
2
Sets the time the modem waits for a dial tone before canceling the call.
4–255
4
4–7
S7
1 sec
1–255
50
Sets the time the modem waits for a carrier signal before aborting a 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 a comma character in a dialing command.
4–255
4–7
4–7
4
4
4
S10 100 ms 1–254
20
Sets how long a carrier signal must be lost before modem disconnects.
S11 1 ms
50–150
95
Sets spacing and duration of dialing tones. 50 ms is the minimum allowed.
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.
voice discrimination.
S37 decimal 01–19
0
Sets the maximum dial line rate.
0 = maximum speed
1 = reserved
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
S42 decimal 0–1
10
For testing and debugging only.
Enables / disables V.32bis and V.22bis auto rate. Retrain and fallback are
disabled in data mode.
0 = disable; 1 = enable.
Enables / disables V.32bis and V.22bis auto rate. Retrain and fallback are
disabled in data mode.
0 = disable; 1 = enable.
S43 decimal 0–1
1
For testing and debugging only.
Enables / disables V.32bis start-up auto mode operation.
0 = disable, 1 = enable.
Enables / disables V.32bis start-up auto mode operation.
0 = disable, 1 = enable.
S89 1 sec
0, 5-255
10
Sets the length of time in the off-line command mode before the modem
goes into standby mode. A value of zero prevents standby mode; a value
of 1-4 sets the value to 5.
goes into standby mode. A value of zero prevents standby mode; a value
of 1-4 sets the value to 5.