Already a month trying to set the IVR to work properly and without success.
In fact, when I try to select the option (1.2 ...) with a fixed or mobile device, nothing happens.
I tried to change the DTMF mode in inbound, auto, info, RFC2833. Rxgain changed. Added relaxdtmf = yes in sip_custom.conf ... no hope!
Please help, slowly losing sanity:)