You can start a conference call in three ways:
- During an outbound call
- During an inbound call
- By moving participants from a bridged call to a conference call
During an outbound call
You can use the Call method to trigger an outbound call to a number or a SIP endpoint. When the dialed party answers the call, the answer_URL of the method must return a Conference XML element. In this example, the Conference element puts the dialed party in the conference room My Room.
During an inbound call
During an inbound call to a Plivo DID, the answer_URL of the application attached to the DID should return a Conference XML element, as shown above.
From a bridged call to a conference call
The participants of a normal call can be transferred from a bridged call to a conference call with the help of our transfer a call method. We have documentation on how to retrieve the call_UUID of a particular live call or of all ongoing calls.
What's the maximum number of participants allowed in a single conference?
A maximum number of 20 participants or members are allowed in a single conference room.