Polycom IP 320 - Manual (Page 20)

User Guide SoundPoint IP 330/320
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• Press and hold (for one second) from the idle display:
— to point to the contact in the directory system where you
can scroll through the individual fields.
— to the Placed Calls list when the phone is idle.
Pressing again will call the currently highlighted
number.
Pressing while in the dialing editor will dial the current
number.
• Press and hold the Backspace soft key to delete an entire field.