Huawei MU609 - 6 Voice and Supplementary Service Application Scenarios; Pre-Configuration (PCM Voice Pre-Configuration); Reference Process

HUAWEI MU609 HSPA LGA Module
Application Guide
Voice and Supplementary Service Application
Scenarios
Issue 02 (2013-09-18)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
44
6 Voice and Supplementary Service
Application Scenarios
6.1 Pre-configuration (PCM Voice Pre-configuration)
6.1.1 Reference Process
Command
Description
AT^CPCM=0,0,0,0,0
or
AT^CPCM=0,1,0,0,0
Set the PCM voice channel as the master mode.
The module generates 2.048 MHz clock signals
and 8 kHz short synchronization signals. Data is in
16 bit Linear format.
Set the PCM voice channel as the master mode.
The module generates 2.048 MHz clock signals
and 8 kHz short synchronization signals. Data is in
8 bit μ-Law format.
OK
AT^ECHO=0
AT^ECHO=1
AT^ECHO=2
AT^ECHO=3
AT^ECHO=4
AT^ECHO=5
close the echo canceller
Handset mode
Headset mode
Carkit mode
Speakerphone mode
Bluetooth headset mode
OK
AT^SMUT=0
Unmute the receive (TX) channel.
OK