*Most software-enabled features and capabilities must be supported by the cloud platform or server.Background Firmware Updates (TR-69 support).Speed Dialing (99 entries, E.164 or URI).Daylight Savings Time support-worldwide.Call forward on busy, on no answer, unconditional.Called, calling, connected party information.Call transfer, hold, pickup, call resume.Distinctive incoming call treatment/call waiting.4 physical line keys 16 configurable lines with pagination (Poly EDGE B30).2 physical line keys 8 configurable lines with pagination (Poly EDGE B10 and B20).Compatible with commercially-available TTY adapter equipment.Hearing aid compatible (HAC) handset for magnetic coupling to hearing aids.Compliant with ADA Section 508 Subpart B 1194.23 (all).Hearing aid compatibility to ITU-T P.370 and TIA 504A standards.DTMF tone generation (RFC 2833 and in-band).Individual volume settings with visual feedback for each audio path.Full-duplex handsfree speakerphone with acoustic echo cancellation and background noise suppression.Frequency response: 150 Hz-7 kHz for handset, handsfree speakerphone, and optional headset.Polycom HD Voice delivers life-like voice quality for each audio path-handset, handsfree speakerphone, and optional headset.Speakerphone select key (backlit when selected).Headset select key (backlit when selected).4-way navigation key cluster with center “Select” key.Multilingual user interface including Arabic*, Chinese, Czech, Danish, Dutch, English (Canada/US/UK), French, German, Hebrew*, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Slovenian, Spanish, Swedish, Turkish
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