Panasonic TDA200 User Manual page 8

Conference
Up to 8 parties can conference into a single call.
 During a conversation, press the Conf button, then dial the next party.
Once they answer, press the Conf button again to add them into the call.
Repeat this procedure for each additional party to be added to the call.
4. Miscellaneous
Paging
 Lift the receiver
 Press *33 + Paging Group No. (xx-xx)
 Announce Page
Do Not Disturb (DND)
 Lift the receiver or press SP-Phone button
 Press *7101 (Set) or *7100 (Cancel)
 Hang up
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