Hello Im Sourish, I'm an asterisk, vicidial and linux expert. I have installed more than 50 vicidial servers in last 3 years. I run a company which provides hosted asterisk and vicidial services globally.
I can develop the custom AVATAR system for you. I would be creating few buttons on the right side panel of your vicidial and you can press those during live call to play some pre-recorded message to the caller. This would be a custom asterisk and vicidial coding and i can complete the project within 7 - 8 days. Please do let me know if i can be a part of this project and i would eagerly wait for your response.
Thanks and regards
Sourish