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Plantronics currently ships direct to consumer only to the United States, United Kingdom, Germany, France, Italy, Finland, Netherlands, Spain, and Australia.

DA55/DA60: Echo Suppression

Article ID : 000005796
The DA55 and DA60 USB to headset adapters come with echo suppression technology.   When delays are excessive on VoIP transmissions, the side tones become echoed which is distracting for the people on both ends of the call. Excessive delays are more common in VoIP systems than with standard telephony, meaning that echo suppression is a critical component in ensuring VoIP call quality.   Link to: Digital Adapter (DA) Family: Product Information and Compatibility

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