Fritzbox 7520 / 7530 asterisk analog telephone

i have installed opwenWRT to Fritzbox 7520, all is fine, vDSL is working, Asterisk is working with SIP.
Has someone get working asterisk with the DECT or the FXS / FXO Port?

Best Regards

There is no support for these hardware features in OpenWrt, because there aren't any publicly available drivers for it.