MC7354 / MC7304 Audio Drivers?

IoT Modules MC/EM Series
1

Hello,

Just out of curiosity, are there any specific USB Audio drivers that Sierra Wireless provides for the Audio interface on the MC7354 and/or MC7304? (Interface 10 specifically)
Or does it just use the system provided driver for USB Audio from Windows and Linux?

On windows when i test calls, so long as i map my audio devices appropriately (Using the provided guide on this foum ( [url]https://forum.sierrawireless.com/t/voice-call-with-mc7304/7754/2] ), i can get it to work somewhat, but on linux, when i try to place a voice call with it, i hear nothing, and the call recipient can’t hear anything either. As well to be honest, i don’t really know how to set up the audio on linux properly either. :blush: :confused:

Any help on either the windows or linux side is welcome, i’m kinda at a loss of what to do at the moment…

2

Hi,
In windows i have tried with Audacity tool, and is working fine…
Linux… Let me try :wink:

-Alex

3

Hello,

I would be curious as well how to get it to work under linux (especially from command line)

I try to use alsa’s aplay/arecord for this but I get errors there as well

arecord -Dhw:1,0 -f S16_LE test.wav
Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Mono
arecord: set_params:1297: Unable to install hw params:
ACCESS:  RW_INTERLEAVED
FORMAT:  S16_LE
SUBFORMAT:  STD
SAMPLE_BITS: 16
FRAME_BITS: 16
CHANNELS: 1
RATE: 8000
PERIOD_TIME: 125000
PERIOD_SIZE: 1000
PERIOD_BYTES: 2000
PERIODS: 4
BUFFER_TIME: 500000
BUFFER_SIZE: 4000
BUFFER_BYTES: 8000
TICK_TIME: 0

I am using the audio in USB Device mode.

Greetz
hayt