SoundPoint® IP 550
Cutting-Edge SIP Feature Set Meets Polycom® HD Voice.
Four-line manager’s phone
Revolutionary voice quality with Polycom HD Voice
Cutting-edge SIP features
Backlit, easy-to-read LCD with support of Asian characters
Interoperability with leading SIP-based IP PBX and Softswitch platforms.

Features
- Four lines
- Polycom HD Voice technology, including support of G.722 wideband codec, Acoustic Clarity Technology 2, and systems design optimized for HD Voice
- Advanced functionality, including shared lines, busy lamp field, presence, and XHTML application
- Backlit 320 x 160-pixel grayscale graphical LCD.
- Integrated IEEE 802.3af Power over Ethernet (PoE) support

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