To Disconnect One Party/Then Talk To Other In Three-Party Conversation - Panasonic KX-NS700 User Manual

PT/PS
During a conversation
Press TRANSFER once
or twice to establish a
conversation with the
party to be disconnected.
The other party will be put on hold.
Press FLASH/RECALL.*
(CO)
OR
(ICD Group)
OR
(PDN)
OR
(SDN)
OR
Press the flashing CO, ICD Group,
PDN, SDN, or INTERCOM
corresponding to the party on hold.
Talk.