Operation Manual

User Manual - English
9
(2g) Message LED
The “Message LED” is primarily used to signalize new voice messages stored on the mailbox of
your PBX, (see page
83 “Voice Mailbox”).
When the following setting on your phone’s web user interface is set to “ON”, it can also be
used to indicate the activities of your monitored extensions (Dialog State Æ see page 85
“
Extension Monitoring and Call Pickup”) and to signalize missed calls.
 Setup  Preferences  General Information 
Message LED for Dialog State/Missed Calls: <ON>
(2h) Call Indication LED
The “Call Indication LED” is only available on the ip840c. It indicates incoming calls by a
flashing red light.
(3) Audio Devices
Your phone is equipped with two different audio devices:
• Casing speaker (3a) and microphone (3b)
• Handset speaker (3c), microphone (3d), and hook switch (3e)
Optionally a headset can be attached as an additional audio device:
• Headset speaker (3f) and microphone (3g)
The audio Devices can be used in three operation modes:
1. Handset mode activates handset audio devices.
2. Headset mode activates headset audio devices.
3. Handsfree mode activates casing audio devices.
For information on switching audio operation modes, see page
68.
You can only use one microphone for talking, but two speakers for listening:
• Handset speaker / casing speaker or
• Casing speaker / headset speaker
For further details see page 70