polycom vvx 411

The Polycom VVX 411 is a 12-line desktop IP phone designed for office workers, featuring a 3.5-inch color LCD display (320×240 pixel resolution), Gigabit Ethernet ports, and Polycom HD Voice technology for crystal-clear audio. The phone supports Power over Ethernet (PoE) and includes a USB port for media and storage. Key specifications: **Display:** 3.5-inch color TFT LCD with backlight (320×240 pixel resolution). **Lines:** 12 lines (supported by four-way navigation keys). **Audio:** Polycom HD Voice up to 7 kHz across all audio paths (speaker, handset, headset). Polycom Acoustic Clarity technology enables full-duplex audio communication with echo cancellation. **Network:** Dual Gigabit Ethernet ports (10/100/1000Base-Tx). **Power:** Built-in IEEE 802.3af Class 2 Power over Ethernet (PoE) support with automatic detection. **Connectivity:** RJ-9 headset port, USB port for applications. **Compatibility:** Broad SIP protocol compatibility; compatible with Microsoft Skype for Business/Lync. **Features:** Call transfer, call hold, mute, voicemail, four-way navigation key, and presence monitoring (for 50 users with expansion module).