Sharp UX-310 Operation Manual page 11

Handset
Connect the handset as shown and place it on the handset rest.
The ends of the handset lead are identical, so they will go into
either socket.
Make sure the handset
cord goes into the
socket marked with a
handset symbol on the
side of the machine!
Connections
Use the handset to
make ordinary phone
calls, or to transmit
and receive
documents manually.
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