Resolved: ASL3 no RX Audio when using AIOC CM108 Emulation

Hello

I have a problem with no RX Audio on my ASL3 node.

The node is running on a Pi 3b, the soundcard is an AIOC running CM108 emulation. See AIOC now working well as an alternative to CM108 to make a node without soldering

SimpleUSB is being used.

TX Audio is working, both with the system announcements and the Interface Tune TX tone tests.
PTT control of the AIOC/CM108 emulation is working

The COS signal from the AIOC/CM108 is working correctly for received signals (showing in the interface tune COS/PTT real-time test ‘v’).

The RX Voice Level adjustment is available in the Interface Tune option 2, but shows no audio

RX VOICE DISPLAY:                                                            
                                 v -- 3KHz        v -- 5KHz


Here are some details about the USB and sound settings:

admin@ASL:~ $ lsusb
Bus 001 Device 004: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter
Bus 001 Device 003: ID 0424:ec00 Microchip Technology, Inc. (formerly SMSC) SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Microchip Technology, Inc. (formerly SMSC) SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
admin@ASL:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: AllInOneCable [All-In-One-Cable], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
admin@ASL:~ $

dmin@ASL:~ $ asl-find-sound
1-1.5:1.0       -->     0d8c:000c AIOC
admin@ASL:~ $ 

simpleusb.conf setting:
[xxxxx](node-main)

;;;;; ASL3 Tune settings ;;;;;
devstr = 1-1.5:1.0
rxmixerset = 500
txmixaset = 500
txmixbset = 500

Hardware can be fully verified by switching the SD card in the Pi to a Hamvoip image for ASL, the system works perfectly with all the same hardware.

I’ve also tried several AIOC/CM108 cards without success.

Does anyone have ideas for what I can try next?

Maybe there is a CTCSS tone involved that is blocking audio. Or the device it is connected to has volume turned all the way down. I have the AIOC configured and working. Carrierfrom=usbinvert and ctcssfrom = no.

OK yes my bad, the CTCSSFROM was set, so no audio was gated through.
All solved now thanks for the pointer!