AT&T 8520T - Manual (Page 9)

Message Retrieval Your Message light goes on to let you know that a caller has left
a message. Follow your System’s message retrieval procedures to get your message.
Mute Turns off the microphone associated with the handset or the speakerphone,
whichever is currently active. Use when you want to confer with someone in the
room with you, but you do not want the other party on the call to hear your
conversation. (You are still able to hear the person on the call.)
Redial (Last Number Dialed) Automatically redials the last number you dialed
manually from the dial pad, either an extension or an outside number. Use to save
time in redialing a busy or unanswered number.
Speakerphone Your voice/data terminal has either the Speaker (listen-only) or the
Speakerphone (listen and talk) function or it may have neither. Check with the
system manager to see how your voice/data terminal is set.
The Speaker (listen-only) feature allows you to place calls or access other voice/data
features without lifting the handset. (Press
[ Speaker ] .) However, in order to speak
to the other party, you must use the handset (the speaker must be off). Use with
feature activities that require listening only, such as on-hook dialing or monitoring
calls on hold.
The Speakerphone feature allows you to place and answer calls or access other
voice/data features without lifting the handset. (Press
[ Speaker ] .) You may use the
softkeys on the voice/data terminal to set or reset the speakerphone. When you set
the built-in speakerphone, it performs a test of the surrounding environment and
adjusts itself for optimal performance. Use the built-in speakerphone any time you
prefer hands-free communications, both speaking and listening, or for group
conference situations.
Transfer Transfers a call from your voice/data terminal to another extension. Use
when your caller needs to speak further with someone else.
Display and Softkey Features
The following features can be accessed using the 10 softkeys located on both sides of
the display.
Call Log The Call Log is initially set to list the 20 most recent incoming
unanswered calls only. An option is provided so you may also choose to access the
most 20 recent answered calls, and the 20 most recent outgoing calls placed from
your voice/data terminal, or you may choose to turn off the Call Log. Use to check on
calls you missed (the unanswered calls) and to remind you of those calls you
answered or placed most recently.
Call Log Indicator Set your display so you receive an indication at the top of your
display screen when a new unanswered incoming call is placed into your Call Log.
Call Progress The API dialing Call Progress feature specifies if and when the
speaker becomes active while placing a voice call using API.
Contrast Change the contrast level of your display so the letters or numbers are
darker or lighter against the background of the screen.
Data Place a data call and set up Data Options.
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