User's Manual
User Guide for the SoundPoint IP 670 Desktop Phone
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4. Press   to return to the idle screen.
Muting the Microphone
During a call, press  . The Message Waiting Indicator turns red and a 
microphone on the screen indicates that the other party (or parties) cannot 
hear you.
Microphone Mute applies to all calling modes. You can still hear all other 
parties while mute is enabled.
To turn off Microphone Mute, press   again.
Adjusting the Volume
Press   to adjust receiver volume during a call. Pressing 
these keys in the idle state adjusts the ringer volume.
Managing Call Lists
Your phone maintains local lists of missed, received, and placed calls. Each list 
can contain up to 100 entries.
Press   followed by Call Lists > Missed Calls, Received Calls, or 
Placed Calls (shown below).
Manage the call list by doing the following:
• To edit the phone number, press the Edit soft key.
Note
To conform to regulatory requirements, handset and headset volume will return to a 
preset level after each call, unless your system administrator changes this. 
Hands-free Speakerphone volume settings will be maintained across calls.










