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86 MultiModemISI Hybrid Series, ISIHI-2S
Chapter 4—MODEM AT Commands, S-Registers, Result Codes
Modem
S37 Maximum Dial Line Rate
Unit: decimal
Range: 0–19
Default: 0
S37
sets the maximum dial line rate. When set to zero (0), the maximum dial line rate is
the same as the maximum modem speed. This is the most common setting and allows
other modem functions to actually determine the line rate used for each connection. It is
the default. Consider using S37 to set a maximum dial line rate if you need to artificially
retain a lower modem speed.
0 = maximum modem speed 13 = 19200 bps
1 = reserved 14 = 21600 bps
2 = 1200/75 bps 15 = 2400 bps
3 = 300 bps 16 = 26400 bps
4 = reserved 17 = 28800 bps
5 = 1200 bps 18 = 31200 bps
6 = 2400 bps 19 = 33600 bps
7 = 4800 bps 20 =
8 = 7200 bps 21 =
9 = 9600 bps 22 = 45000 bps
10 = 12000 bps 23 =
11 = 14400 bps 24 =
12 = 16800 bps 25 = 56000 bps
S42 Enable / Disable V.32bis and V.22bis Auto Rate
Unit: decimal
Range: 0-1
Default: 1 (enabled)
This register is used for testing and debugging only.
S42 enables and disables the V.32bis and V.22bis auto rate. Retrain and fallback are
disabled in data mode. Set S42 to zero (0) to disable auto rate, or 1 (the default) to
enable auto rate.
S43 Enable / Disable V.32bis Start-up Auto Mode
Unit: decimal
Range: 0-1
Default: 1 (enabled)
This register is used for testing and debugging only.
S43 enables and disables V.32bis start-up auto mode operation. Set S43 to zero (0) to
disable start-up auto mode, or 1 (the default) to enable start-up auto mode.