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Lost Carrier Detect Time S10
S10 contains the amount of time (0-255) in 0.1 second increments
carrier must be absent to be recognized as a loss of carrier. The default
value is 14 (1.4 seconds).
DTMF Tone Duration S11
S11 determines the length of DTMF tones. The period of silence is
equal to the duration of the tone. The value of this register must be
entered in multiples of 10. Default value is 80 (80 ms).
Escape Sequence Pause S12
Using the escape sequence to return to command mode from data mode
requires two pauses, one before and one after the escape characters.
The pauses prevent the modem from responding to a character sequence
which might contain the escape sequence as part of its normal data
transmission.
S12 contains the pause interval in 0.02 second increments. The factory
setting is 50, equivalent to 1 second (50 x 0.02 sec). When S12 is 0 then
timing is not a factor.
The timing between the 3 escape characters must be less than the pause
interval or the escape sequence will not be detected. The data rate also
affects the timing and must be taken into account when changing the
pause interval.
To disable the escape command, set S2 to a value greater than 127
instead of changing S12. Values between 15 and 255 may be used for
S12.
Note
When S-registers have parallel AT commands, the
commands are listed in the register tables as a cross refer-
ence. If no command exists for the option the column is left
blank.
S13
Not used
V.3400
Status Registers
10-7
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