Zyxel V300 Serie Manual Del Usuario página 6

FEATURE DESCRIPTION
Alphanumeric Use these to enter numbers, letters and symbols. Use the # key to
keypad switch between number (123) mode, uppercase mode (ABC),
lowercase mode (abc) and symbol mode (;:").
Microphone The microphone is active when the V300 is in speakerphone
mode.
Volume keys Use the + key to increase the volume, and use the - key to
decrease it.
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When you use the handset, these keys control the handset's
speaking and listening volume.
When you use a headset, these keys control the speaking and
listening volume on the headphone (
ports on the V300.
When you use the speakerphone, these keys control the
internal speaker and microphone volume.
) and microphone ( )