AT Commands Reference Manual - wireless netcontrol GmbH

Audio
Audio
General
Audio Mode - You may think of an Audio Mode as an audio device (headset, hands-free kit, etc.).
As the H24 is a module and therefore supplied without audio devices, but only with the
infrastructure for them, we use the term Audio Mode for describing this infrastructure. An Audio
Mode is a predefined audio configuration that defines RX and TX audio paths, gain and volume
settings and other features configurations (filters' coefficients, echo cancellation/noise
suppression, status and more).
Introduction
The audio control can be Summarized to the following three issues:
• Path: Selection of the active audio mode.
• Volume: Control of audio volume.
• Other Calibrations:
• Activation and setting of audio algorithms (echo cancellation, noise suppression and
sidetone)
• Gain calibration (RX, TX, Sidetone)
• Filter calibration (the commands will be supplied upon request from Motorola's customer
care team)
Standard Audio Commands
+CRSL, Ringer and Other Alerts Volume Level
This command sets the different alerts volume level of the active audio mode. A different volume
level is saved in NVM for each audio mode. The new value remains after power cycle.
Command Type Syntax Response/Action Remarks
Set +CRSL= OK
+CME ERROR:
Read +CRSL? +CRSL:
+CME ERROR:
Test +CRSL=? +CRSL: (list of
supported s)
+CME ERROR:
Sets the alerts volume level for the
active audio mode.
Reads the active audio mode alerts
volume level.
Displays the range of alerts volume
levels.
3-194 H24 - AT Commands Reference Manual April 15, 2010