Sharp MX-C380 Quick Start Manual page 90

Dialling using the speaker
When the speaker is used to dial, fax transmission is started after the
number is dialled and the connection is established. If a person answers,
you will be able to hear his or her voice, but you will not be able to speak.
88
Select the [Speaker]
BACK OK
key.
Select with
[OK].
You will hear the dial tone
through the machine's
speaker.
Dial the fax number of the
destination with the numeric
keys or with the [Address
Book] key.
When the connection is
established, press the [BLACK
& WHITE START] key to send
the fax.
and press