18
11
MWI key
- Message waiting indicator; it also provides access to the voicemail system
12
Hold key
- puts current call on hold
13
Transfer key
- puts a call on hold and gives you dial tone to call another party
14
Conference key
- establishes a conferences call
15
Redial key
- activates a function configured by your administrator
16
Programmable keys
- keys to which you can assign functions or phone numbers