Comtrol AT Commands for SmartACFL - Manual (Page 24)

Command Reference Manual
3-4 Conexant 100722A
3.2.1.6 -SMS= - Select Mode
Selects Data mode, DSVD (digital simultaneous voice and data) mode, or enables automatic mode selection.
Syntax
-SMS<mode>
Defined Values
<mode> Decimal number corresponding to the selected mode or automatic mode select enable.
0 Data mode. (Default.)
1 DSVD mode (a modem not supporting DSVD will respond with ERROR).
2 Reserved (will respond with ERROR).
3 Automatic modem select (DSVD mode/Data mode).
Notes
DSVD is a technology that allows simultaneous voice and data operation using a Conexant modem connected to a telephone
line. Voice and data channels are combined in the digital domain for DSVD.
Establishing a DSVD connection is analogous to establishing a regular data modem connection. Initiate the call using normal
dialing (ATD) and answering (ATA) procedures. The modem can switch from a regular phone conversation into DSVD mode
and back to phone conversation. A handset, headset, or microphone/speaker can be used for voice communication during
DSVD mode.
DSVD requires a V.34 mode or faster connection.
Reporting Selected Options
The modem reports the selected options in response to the following command:
-SMS?
The response is:
<mode>
Example:
-SMS?
0
Reporting Supported Options
The modem reports the supported options in response to the following command:
-SMS=?
The response is:
(list of<mode> values)
Example:
-SMS=?
(0 or 1)