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50 CHAPTER 5: STANDARD FEATURES
■ Handset Volume — To raise or lower the volume of the dial tone or
of the sound that you hear on the handset, pick up the handset and
then press the up or down Volume Control buttons repeatedly until
the volume is at the level that you prefer. You can change the volume
during a conversation or by listening to the dial tone.
■ Speaker Volume (NBX Business Telephones only) — To raise or
lower the volume of the speaker when you are using the speaker
phone, press the Speaker button and then press the up or down
Volume Control button repeatedly until the volume is at the level you
prefer. You can change the volume during a conversation or by
pressing Speaker and listening to the dial tone.