Asterisk have list three-way calling in its features list, but I don’t know how to use it.
I only found a setting about three-way calling in zapata.conf, is this means that this feature needs to be supported by hardware(s)?
can I just call someone, hold the call, then make another call, and enter some kind of feature code (for example : *99#) after the second call has answered, to accomplish the Three-way calling feature?
Is it can only be done with hardware supported, or it can be manually implemented by the dialplan
Thanks for your help