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MultiModemISDN User Guide
through the serial port (either sent or received). Disable the inactivity timer
by setting S30=0, which is the factory default setting. S30 currently works for
+ all protocols EXCEPT V.110.
S-register: S31
Function: Maximum Redial Timeout Value
Unit: 1 minute
Range: n=0 Does not try to redial
n=1–255
Default: 30 (30 minutes)
Description:Sets the maximum redial timeout value for attempts to add a second channel to a
MLPPP data call. Once the maximum timeout is reached, there are no further attempts
to redial. Re-dialing occurs if a call attempt fails due to the host being busy or not
answering. The first redial timeout period is 1 minute. If re-dialing fails after 1 minute,
the next redial timeout is 3 minutes. If re-dialing fails after 3 minutes, the next redial
timeout is 5 minutes. If re-dialing fails after 5 minutes, subsequent redial timeouts occur
every 5 minutes, up to the maximum redial timeout value (S31).
S-Register: S32
Function: Escape Sequence Timeout
Unit: 100 ms
Range: 0–255
Default: 20
Description:Sets the time allowed in an escape sequence from the receipt of the A in AT to the receipt
of the carriage return. If the S32 time interval expires before you press ENTER, the
escape sequence ends. The default time is 2 seconds.
S-Register: S34
Function: Maximum Escape Sequence Length
Unit: Decimal ASCII code
Range: 0–10
Default: 2
Description:Sets the maximum character length of the escape sequence, not including +++AT. For
example, a character length of S34=2 allows two characters after +++AT (e.g.,
+++ATH0). Conversely, an invalid escape sequence (too many characters placed in the
command string) passes through as data (e.g., +++atili2). The maximum length of the
escape sequence is 10 characters.
S-Register: S44
Function: POTS Port Ring Frequency
Unit: Decimal ASCII code
Range: 2–4
Default: 2 (25 Hz)
Description:Controls the ring frequency from the POTS port. S44=n where:
n=2 25 Hz ring frequency
n=3 20 Hz ring frequency
n=4 16.67 Hz ring frequency
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