1. IP Phone calls PSTN, hears no ringback
On the POTS dialpeer
> progress_ind alert enable 8
2. PSTN user calls IP Phone, hears no ringback
On the VoIP dialpeer
> progress_ind setup enable 3
or
> tone ringback alert-no-pi
3. IP Phone transfers calls, no ringback
Set the Service Parameter “ToSendH225UserInfoMsg”
4. IP Phone calls PSTN, does not hear busy message
> voice call convert-discpi-to-prog
5. one way audio or no way audio or no dtmf signal relay
> voice rtp send-recv
