Polycom VVX 600 User Manual page 28

You cannot end calls that are on hold. You must resume held calls before ending them.
To end a held call:
» From the Calls screen, select the held call and press Resume > End Call.
When you are in a call, you can place a call on hold and resume the call.
You can place any active call on hold.
To hold a call:
» During an active call, select Hold. If you're in the Calls screen, highlight the call first.
A hold icon is displayed on the line of the held call, and a red LED light flashes on the line key for all
phones.
You can view and resume all held calls in the Active Call, Lines, and Calls screens.
To resume a held call:
» Do one of the following:
 Select Resume.
 From the Calls screen, select the call to highlight it, and select Resume.
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