1. ClickToCall API Request


2. API to request for ClickToCall status


3. API to request for Call Details


4. API to Blacklist any number in an account


5. API to remove a blacklisted number 


6. API to initiate a Follow-up call


7. API to Edit any Follow-up call details


8. API to request Report for Follow-up calls data


9. API for OBD/Outbound Call


You may access all the Voice APIs documentation here.