O2 6431 / Arcadyan VGV7510KW22 with asterisk chan-lantiq Patch from Stefan Koch ? no dialtone

Hello,
did somebody get asterisk-13 work with the FXS Ports ?

https://forum.openwrt.org/viewtopic.php?id=62696

i got the image build with a workaround Build fail: Arcadyan VGV7510KW22(NOR) / o2 6431 - asterisk13

but got no dialtone if connect at telephone to the TAE Port

Thanks