The Polycom SoundPoint IP 335 phone is designed to bring a high-quality, cost effective, solution to cubicle workers/call center operators through advanced telephony features and HD Voice technology, making voice communications more effective and productive. Utilizing its high resolution backlit display, RJ-9 headset port ,and Polycom HD Voice technology, the SoundPoint IP 335 phone delivers a business grade telephony endpoint at an entry-level price. The SoundPoint IP 335 features Polycom HD Voice, bringing life-like richness and clarity to every call. Polycom HD Voice incorporates wideband audio for over twice the voice clarity; patented Polycom Acoustic Clarity technology for crystal-clear, noise and echo-free sound; and best-in-class system design for high-fidelity voice reproduction. The SoundPoint IP 335 desktop phone also delivers advanced features and capabilities such as call hold, pick-up, transfer, and three-way local conferencing ,as well as more advanced capabilities such as shared call/bridged line appearance, built-in XML microbrowser, and RJ-9 headset port. Optional power supply (see beside box). Choose 'Power Sup.' to provide power when in-line Power over Ethernet (PoE) is not available.