For Best Results
Calisto 620-M is a business-quality communication device with sensitive microphones;
following the recommendations below will assure a good user experience for you and people
at the other end of the call.
Set speakerphone in an open area during use
Keep objects 12 inches (304 mm) away from speakerphone for best performance
Avoid moving the unit unnecessarily
Avoid rustling papers, tapping pencils, etc., near the speakerphone

Important Tips for Using your Speakerphone

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