Cortelco 2757 - Manual (Page 30)

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2.7.2.1.2 Blind Transfer
To perform a blind transfer, dial the asterisk key ‘ * ’ after dialing the phone number for the transfer.
You will see the following message displayed on the LCD screen:
At this point, the call will be transferred. If a blind transfer fails, the call cannot be retrieved.
2.7.2.2 3-way
To create a 3-way conference, ask the remote party to remain online. Press ‘3-way’. You will hear
dial tone in the handset, and see the following message on the LCD screen.
Now dial the phone number of the third party. You will see the following message displayed on
the LCD screen. You may return to the original call by pressing ‘Back’ before you have finished
dialing.