3-Way Calling allows you to talk with two people at the same time. You can easily add a third person to your phone conversation by dialing them in while you’re on an existing call. You’ll have an opportunity to speak with the third caller privately before joining all parties together. This is useful to give a brief introduction to the third party about the group call they’re about to join. Or you can immediately join all parties into one call with the touch of a button.
If you are in a call and want to add another participant, it’s as simple as 1-2-3.
On your Yealink T21P phone:
Press the Conf soft key to place a new call.
Dial the number of the person you would like to add and press the Send soft key.
After the person has answered your call, press the Conf soft key again to join all parties in the conference.