@dangowrt wrote:
As the 40-pin GPIO header is compatible with the Raspberry Pi, why not try to interface FXO/FXS modules from switchpi.com like that one with the BananaPi R2 or R64 boards?
Obviously the original DAHDI driver made by SwitchPi specifically for the Raspberry boards will not work as it is quite tied to the Broadcom/RasbPi platform:
With proper subsystem drivers and bindings for SPI, I2S and some GPIOs in device tree it should be possible to simplify this existing driver and make it work on any router platform offering the RasbPi 40-pin header (e.g. Allwinner A20 sun7i BPi-R1 board).
I’ve ordered one OAKR2 to toy around with will keep you updated.
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