How do I Conference 2 Phone Calls at once on my Cortelcto 2720? (DISCONTINUED)

The Cortelco Phone is DISCONTINUED! Good-bye, old friend!

1 To establish a 3-way conference, press HOLD while talking on one line.

The first conference person is on HOLD.

2 Press Line 1 or Line 2 whichever is not in use. Listen for dial tone.

Dial the telephone number of the second person.

3 Press the conference button. You may now speak to the first and second person simultaneously.

To place both calls on hold, press the hold button while in conference.

To cancel hold for one line, press the desired line.

4 Replace the handset in the cradle to disconnect both lines. To stay connected to only one line, press the desired line. The other line will be disconnected.

5 After conference call, press Line 1 or Line 2 to cancel conference call.