Chapter 5 – AT Commands, S-Registers, and Result Codes

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.

SocketModem Global MT5634SMI Developer’s Guide

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Technics MT5634SMI-34, MT5634SMI-92 manual +VDR=x, y Distinctive Ring Report, #CBAn Callback Attempts, #CBDn Callback Delay