Multi-Tech Systems ISIHP-2U - Manual (Page 97)

MultiModemISI Hybrid Series, ISIHP-2S/2U/4S/4U/4SD 97
Modem AT Commands & S-Registers
S10 Carrier Loss Disconnect Delay Time
Unit: 100 ms
Range: 1–254
Default: 20
Defines the length of time, in milliseconds, that the modem waits after a
loss of carrier signal before the it disconnects. The default setting is 2000
ms (20 units of 100 ms each). Maximum delay is 25400 milliseconds, or
25.4 seconds (decimal 254).
S11 Tone Dialing Spacing and Duration
Unit: 1 ms
Range: 50 - 150 (US) or 80–255 (Canada, UK,
International)
Default: 95 (US) or 80 (Canada, UK, International)
Sets the speed of tone dialing (spacing and tone duration times). The default
value is 95 units for domestic models and 80 units for Canadian and
International models, where each unit is one ms. In other words, for
domestic modems, each tone is sustained for 95 ms followed by a 95 ms
pause. The minimum S11 value allowed is 50 ms (50 units). The maximum
S11 value is 150 ms (150 units).
S28 Enable / Disable V.34 Modulation
Unit: decimal
Range: 0, 1–255
Default:1 (enabled)
Enables or disables V.34 modulation. Setting S28 to zero (0) disables V.34
modulation. Any other setting (1-255) enables V.34 modulation.
S35 Data Calling Tone
Unit: decimal
Range: 0–1
Default: 0 (disabled)
Enables or disables the V.25 data calling tone, which allows remote data,
fax and voice discrimination. Setting S35 to zero (0) disables V.25 data
calling tone; setting S35 to 1 enables data calling tone. The default setting is
1.