Avaya 4075 - Manual (Page 63)

Call features
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To adjust the headset or loudspeaker volume, perform the following step:
When you adjust the headset or loudspeaker volume, the handset
remembers the new setting the next time you use the handset.
Using mute during a call
To mute and unmute the handset microphone, perform the following
steps:
Transfer calls
You can use this option to transfer a call or add a third party to a
conference call. The behavior of the Transfer feature can vary depending
on your system configuration. Contact your system administrator to find
out what transfer options are available for your use.
Transferring a call
To transfer a call, perform the following steps:
1. Press the Volume up or Volume down key.
1. Press the Mute soft key to deactivate the handset
microphone.
2. Press the Unmute soft key to activate the handset
microphone.
1. Press the Call key to place the active call on hold.
2. Use the Dialpad to dial the phone number of the
third party.
3. Press the Call key to alternate between the two
callers.
Mute
Unmute