How many people can I call in one local conference call? Viral Bhuptani December 05, 2019 15:25 Updated Follow You can call up to 5 people in one local conference call :) Related articles Why is local conference calling not enabled for me yet? How much am I charged for one conference call? Can I add another number to my Ringo account? What is the difference between a Ringo call and a regular carrier call? Comments 0 comments Article is closed for comments.