Lines / Accounts: 2 SIP identities (2-line capability)

Display: 2.5″ graphical backlit LCD, 132 × 64 pixels

Audio / Sound Quality:

• Polycom HD Voice technology (wideband audio)

• Polycom Acoustic Clarity tech: full-duplex speakerphone, echo cancellation, and background noise suppression

• Frequency response: approx. 150 Hz – 7 kHz

• Codecs: G.711 (A-law, µ-law), G.729AB, G.722 (HD Voice), iLBC

Network / Connectivity:

• 2 Ethernet ports (10/100 Mbps)

• Power over Ethernet (PoE) support (IEEE 802.3af, Class 2)

• Optional external power adapter (12V DC) if not using PoE

User Interface / Controls:

• 12-key dial pad

• Hard keys: Home, Speaker, Mute, Headset, Volume

• 4 “soft keys” 4-way directional cluster + “Select” button

Call Handling Features:

• Voicemail support

• Shared call / bridged-line appearance

• Call transfer, hold, forward, pickup

• Local 3-way audio authentication, EAPOL support

• Media encryption (SRTP) and TLS for secure signaling

• Secure provisioning (HTTPS), encrypted configuration Desk stand (reversible) or Multilingual user interface (supports many headset jack

• Hearing aid compatibility (magnetic coupling)

• TTY adapter support

• Event logging, hardware diagnostics, status & stats reporting