Panasonic DATA PORT KX-TS27-W - Manual (Page 31)

Using an Optional Headset N
Plugging an optional headset into the unit provides a hands-free phone
conversation.
Please use only a Panasonic KX-TCA80 or KX-TCA90 headset.
To order, call the accessories telephone number on page 2.
When the optional headset is connected to the unit, be sure to use the
headset to talk with the caller. If you want to have a normal phone
conversation, disconnect the headset before making or answering a call.
Connecting an Optional Headset to the Unit
Connect an optional headset to the headset jack as shown below.
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