A knowledge base article about Three Way Conference for Analog & Digital Phones provided by the UC Berkeley IT Service Hub - Knowledge Portal
Three Way Conference (PBX Digital Lines)
To do a three way conference, press the conference button when you have your first caller on the line, dial desired second number, press the conference button again to connect all callers.
Three Way Conference (Centrex Digital Lines)
To add a third party:
Depress the TWC key.
Listen for a recall or stutter dial tone.
Dial the third-party number.
If you are unable to reach the third party (e.g., wrong number, busy, no answer), press the switch hook twice to return to the original call.
Third party answers.
Press the TWC key.
Begin talking.
Three Way Conference (Centrex / Analog Lines)
Allows you to establish a conference with two other parties.
Press the switch hook once to put first party on hold
Hear special dial tone
Dial desired number of second party
Press the switch hook once to connect all callers to conference
When conference is complete, hang up.