ATCOM 5520 User Manual page 13

Volume buttons Adjust the volume
Speakerphone
Pick up and hung up on the speakerphone mode, when pick
button up by speakerphone, the LED of the button is on.
Mute button
Mute the handset, headset or speakerphone by press the Mute
button; this prevents the person on the active call form hearing
what you or someone else in the room is saying.
To cancel the Mute function, press the Mute button again. If
Mute the voice, the LED is light on this button.
Headset button
Pick up and hung up on headset mode. When pick up by
headset, the LED button will light.
Voicemail button
Check the Voicemail status, if there are voicemail, the button
will light.
、
1.5520 support BLF in two ways, one is integrated on the ipphone, the other one is
extended interface.
The BLF indicator status:
When boot up,all the light blink for once.
When phone is stand by, all the light are off.
When there is a coming call,the corresponding line key and status
light will blink.
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