Cortelco 8015 Owner's Instruction Manual page 45

Setting up a 3-way conference call
When you have both an external call and an
intercom call in progress, you can set up a three-
way conference call, like this:
1. During an external call, press
then the number of the handset you want to
join the 3-way call.
2. The called party press
3. The calling party can press the
the 3-way call.
4. Either of the two internal handsets can press
the key to leave the conference call at any
time.
Note:
If one of the handsets drops the conference
call, the remaining handsets will continue the
conference.
the key and
key to answer.
key to start
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