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MT5634 Modem; AT Command Set
Command: +VDR=x, y Distinctive Ring Report
Values: x = 0, 1 Distinctive Ring report control.
See description.
y = 0–255 Minimum ring interval in 100 ms units.
See description.
Default: 0, 0
Description: Enables reporting of ring cadence information to the
DTE and specifies the minimum ring cadence that will
be reported. The report format is one line per silence
period and one line per ring period. The length of the
silence period is in the form DROF=number in units of
100 ms<CR><LF>, and the length of the ring is in the
form DRON=number in units of 100 ms<CR> <LF>.
The modem may produce a Ring event code after the
DRON message if enabled by the y parameter. The y
parameter must be set to a value equal to or smaller than
the expected ring cadence in order to pass the report to
the DTE.
+VDR=0, N/A Disables Distinctive Ring
cadence reporting.
+VDR=1, 0 Enables Distinctive Ring cadence
reporting. Other call progress result
codes (including RING) are reported
as normal.
+VDR=1, >0 Enables Distinctive Ring cadence
reporting. The RING result code is
reported after the falling edge of the
ring pulse (i.e., after the DRON report).
+VDR=? Displays the allowed values.
+VDR? Displays the current value.
Command: #CBAn Callback Attempts
Values: n = 1–255
Default: 4
Description: Sets the number of callback attempts that are allowed after
passwords have been exchanged between modems.
Command: #CBDn Callback Delay
Values: n = 0–255
Default: 15
Description: Sets the length of time (in seconds) that the modem waits
before calling back the remote modem.