Toa N-8000 Series - Manual (Page 159)

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Chapter 2 FUNCTIONS AND OPERATION
MASTER STATION'S FUNCTIONS AND OPERATION
5.2.2. Initiating a 3-party conference during a 2-party conversation
Step 1. While connected with the second party, press the Transfer key.
The second party will be placed on hold.
A B
Conversation (on hold)
Step 2. First press the function key and then [5][1], followed by the station number of the third party.
When the third party answers, the second party is released from hold mode, permitting a 3-party
conference to proceed.
Calling tone
Calling
C
A B
Conversation (on hold)
B A
C
When C answers,
3-party conference
becomes available.
3-party conference
Calling the third party
Y Y 5 + 1 + +
Function designation number
Station number of
the third party
Note
Unless both the first and second parties are lifting the
handsets, an error tone sounds at both parties before
pressing the third party's station number, reverting to the
original conversation between the two.