Sony IT-M202 - Manual (Page 21)

Receiving a call while talking
If another call comes in while talking, the LINE 1 or LINE 2 button on
which another call is coming will flash.
1 Press (
HOLD).
The line in use is put on hold.
2 Press C LINE 1) or ( LINE 2), in which another call is coming.
3 Press C con D.
Now you can talk to both parties. (Three-way conference)
Note
If you do not press ( hold ) in step 1, the first line will be disconnected.
To disconnect the lines 'during a three-way conference
To disconnect both lines at the same time, replace the handset in the
cradle.
If you talk through the speakerphone, press (SPEAKERPHONE).
To disconnect line 1 and continue talking on line 2 only:
Press ( LINE 2).
To disconnect line 2 and continue talking on line 1 only:
Press ( LINE 1 ).
To put the lines on hold during a three-way conference
Press ( HOLD). Both lines are put on hold.
To resume the conversations on both lines, press ( CONF).
To resume the conversation only on one line, press ( line 1 ) or
(LINE 2). for the line you want.
Tip
During a three-way conference, you cannot use the "call waiting" service.
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Advanced Features 2 V'