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Audio conference phones
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Until Polycom pioneered the audio conference telephone, "speakerphone" was a dirty word. The average speakerphone sounded hollow and echoey, had poor pickup of anyone not sitting close to the unit, and tended to clip parts of words, especially if people at opposite ends of the call started to speak simultaneously.
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These phones sounded unnatural for three reasons: first, they employed half-duplex technology -- the phones only allowed one person to talk at a time and would "turn around" the line to allow the other person to speak, resulting in a clipped and dead sound. Second, the phones had little or no circuitry to compensate for the effect of room ambience; hence calls through these phones sometimes sounded echoey, esp when used in large conference rooms. Third, they had mediocre microphones and/or speakers.
Audio conference phones, on the other hand, use full-duplex technology and special circuitry to reduce room ambience. They also have better microphones and speakers than the average speakerphone and, in some models, they have multiple microphones, in order to pick up sound in a circle around the unit, thereby making them ideal for conference room calls.
The more advanced units even have corded or wireless microphones that connect to the base unit, allowing people not seated near the unit to participate in a conference call.
WebMaster: David Cook (Last update: 2/18/2002)
Email: [email protected]
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