US Robotics 56K USB Modem User Manual page 92

Table 196. +VSM Extended Syntax Commands
+VSM?
AT+VSM=?
+VSP=<value>—Speakerphone On/Off
Use this command to turn the speakerphone function on and off.
Result codes:
• OK if <value> = 0, 1.
ERROR if <value> ≠ 0, 1.
•
Table 197. +VSP Commands
Command
+VSP=0 Speakerphone function off (default).
+VSP=1 Speakerphone function on.
* ITU-T Recommendation V.253 standardized this command. The standard version contains two additional parameters that are not
supported by the USRobotics controller-based AT command set. For additional information on these parameters, see ITU-T Rec-
ommendation V.253.
Table 198. +VSP Extended Syntax Commands
Command
+VSP=<value>
+VSP?
+VSP=?
+VTD=<dur>—Beep Tone Duration Timer
Use this command to set the default duration for DTMF/tone generation in 0.01 s increments. For DTMF
digits, beep tone duration is the interdigit time. For tone generation, this number is the actual tone duration.
The default tone duration is 100 or 1 s.
Result codes:
• OK if <dur> = 0—400.
ERROR if <dur> ≠ 0—400.
•
Table 199. +VTD Commands
Command
+VTD=<dur> Sets the duration for DTMF/tone generation.
+VTD? Displays the current beep tone duration timer.
+VTD=? Displays the range of supported values.
Returns the numeric and string labels of the compression method currently
in use, and the sampling rate currently in use.
Reports the voice compression methods supported by the DCE and the
voice sampling rates at which they are supported. The default is 129,800
(16-bit linear,
8.0 kHz).
Function
Turns the speakerphone on or off.
Displays the current status of the speaker phone.
Displays the range of supported values.
Function
Function
56K USB Modem
User Guide
Command Reference - 86