Audiospan And Dsvd; Commands; Sse - Enable/Disable Dsvd - AOpen FM56 Manual

3.6 AUDIOSPAN AND DSVD

3.6.1 Commands

AudioSpan and DSVD are two technologies that allow simultaneous voice and data
operation using a Rockwell modem connected to a telephone line. AudioSpan and
DSVD implementations differ in the manner that voice and modem data are combined.
Voice and data channels are combined in the analog domain for AudioSpan and in the
digital domain for DSVD.
Establishing a AudioSpan or 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 AudioSpan
or DSVD mode and back to phone conversation. A handset, headset, or
microphone/speaker can be used for voice communication during AudioSpan or DSVD
mode.
AudioSpan operates in normal (non-error corrected) or error-corrected/compression
mode (MNP 5 or V.42 bis depending on the error correction settings of the modems).
The DTE rate must be equal to or greater than the anticipated modem connection speed.
In general, DTE speed of 38400 bps or higher should be used.

3.6.1.1 -SSE - Enable/Disable DSVD

This command enables/disables DSVD according to the supplied parameter.
Syntax
-SSE=[<value>]
Defined Values
<value> Decimal number corresponding to the selected option.
0 = Disable DSVD. (Default.)
1 = Enable DSVD. A modem not supporting DSVD will respond with ERROR.