[Freeswitch-dev] libfreeswitch as embedded IVR

Hello, I have to implement an IVR embedded in an existing app. My understanding is that I can declare global handlers for channel states to *intercept* calls and use the switch_ivr_* to do my processing. I have to either use tts or play recorded prompts to the caller and receive dtmf input from the caller. There can be multiple to & fro interactions with the caller in 1 call, this is determined by other data from the rest of the app. 1) Which channel state(s) should I hook into? 2) Will I have to setup a dialplan to make this work ? 3) Is there a sample/test or psuedo code that I can look at ? regards srp