Filter
Top Products
Chapter 5 – AT Commands, S-Registers, and Result Codes
SocketModem Global MT5634SMI Developer’s Guide 33
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.
Command: #CBF? Callback Failed Attempts Display
Values: n/a
Default: n/a
Description: Requests the number of failed callback passwords since reset or power-up. This number
can be stored to nonvolatile memory using the &W command.
Command: #CBFR Callback Failed Attempts Reset
Values: n/a
Default: n/a
Description: Resets the number of failed callback passwords to 0. This does not reset the number stored
in nonvolatile memory.
Command: #CBIn Local Callback Inactivity Timer
Values: n = 1–255
Default: 20
Description: Sets the time (in minutes) that the modem waits for a command before forcing the user to
enter the setup password again.
Command: #CBNy
=x Store Callback Password
Values: y = 0–29
x = password
Defaults: None
Description: Sets the callback security password for the y memory location. The password must have 6
to 10 characters, and cannot include the + or - characters.
Command: #CBPn Callback Parity
Values: n = 0, 1, or 2
Default: 0
Description: Sets parity for the callback security messages.
#CBP0 No parity.
#CBP1 Odd parity.
#CBP2 Even parity.