User Guide for the Polycom SoundStation IP 7000 Phone
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The conference phone screen shows a computer or mobile audio 
source. The LEDs blink green to indicate the audio source.
2. Do one of the following:
— If the conference phone has an active call, press the Hold soft key.
The active call is placed on hold, and the computer or mobile audio 
becomes the active call.
or
— If the conference phone has a call on hold, press the Accept soft key.
The computer or mobile audio becomes the active call.
You can place the computer or mobile audio on hold, or use the Join soft 
key to create a conference call with the call on hold and the computer or 
mobile audio.