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Chapter 4 - AT Commands, S-Registers and Result Codes
S36
Time Between DTR Inactive and Modem Off-Hook
Unit: 1 Second
Range: 0-255 seconds
Default: 0
Description: Sets the time between DTR inactive (low) and the modem going
off-hook
. The DTR Busy-out feature is disabled with S36=0.
S37
Time Between DTR Active and Modem On-Hook
Unit: 1 Second
Range: 0-255 seconds
Default: 5
Description: Sets the time between DTR being active and the modem going
on-hook
(not busy).
S48
Program V.34 Connect Speeds
Unit: N/A
Range: 33, 31, 28, 26, 21, 19, 16, 14, 12, 9 and 4
Default: 0
Description: Defines which speed modem connects within V.34 mode scope
(e.g., S48 = 21 means maximum connect speed is 21.6K). This
register compensates for line conditions that will not support
higher V.34 speeds (e.g., 33.6K, 31.2K, 28K, 26.4K, 24K...).
The modem default is a value of 0, which indicates a connection
attempt of 33.6K.