Longshine LCS-8056C2 - Manual (Page 155)

Commands for Host-Processed Modems Reference Manual
100498E Conexant 5-23
+VDX - Speakerphone Duplex Mode
This command selects speakerphone half-duplex or full duplex mode.
Syntax
+VDX=<mode>
Defined Values
<mode> Decimal number corresponding to the selected option.
0 The speakerphone mode is half duplex.
1 The speakerphone mode is full duplex.
Reporting Current or Selected Values
Command: +VDX?
Response: +VDX: <mode>
Example: +VDX: 0 For the default setting.
Reporting Supported Range of Parameter Values
Command: +VDX=?
Response: +VDX: (<mode> range)
Example: +VDX: (0,1)
Result Codes
OK <mode> = 0 or 1.
ERROR Otherwise, or if not in Voice Mode.