Features

User-friendly interface with a familiar telephony experience

White backlit 3.5-inch (9 cm) grayscale display, 396 × 162 pixels

Scrollable access to calling features and XML-based applications

Backlit indicators for line keys, audio path keys (handset, headset, speakerphone), and message waiting

Convenient volume-control toggle for handset, speaker, and ringer adjustments

Full-duplex speakerphone for flexible hands-free communication

Adjustable footstand for optimal viewing angle and ease of use

Specifications

Product Description: Cisco IP Phone 6851 – VoIP phone

Type: VoIP phone

VoIP Protocols: SIP, SRTP

Voice Codecs: G.722, G.729ab, G.711u, G.711a, iLBC, iSAC, Opus

Lines Supported: 4 lines

Call Services: Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Indicator

Speakerphone: Yes, full duplex

Display: Monochrome LCD – white backlit

Network Ports: 2 × Ethernet (10/100/1000Base-T) with integrated switch

Body Color: Charcoal