Making calls
1. Enter the number you want to call.
2. Press the Speaker button.
3. To adjust the volume, press + or - on the Volume button.
4. To continue the call using the handset, lift the handset. To activate the speaker
5. To end the call, press the Speaker button.
Requesting automatic callback
If an internal telephone number you dialed is busy or unanswered, use this procedure to
request automatic callback. Your telephone system can call you back when the number is no
longer busy.
In case of external calls, the automatic callback option is only available if the network provider
and the system connection support it.
1. Press the Callback softkey.
2. Replace the handset.
3. Lift the handset at the ringing tone.
4. To deactivate the automatic callback again:
Redialing a called number
You can redial one of the last numbers called.
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Avaya 9508 Series Digital Deskphone User Guide
additionally (Monitoring), press the Speaker button. To activate Handsfree press
the Speaker button once more.
Your telephone system calls you back as soon as the called number is free.
Your telephone system calls the dialled call number again.
a. Press the Status softkey.
b. Select status information Callback act.
c. Press the OK button.
d. Press the Delete softkey.
March 2011