Cisco IP Phone 6851, VoIP phone, SIP, SRTP, 4 lines, charcoal

Description

The 6800 series combines an attractive ergonomic design with “always-on” reliability and secure encrypted communications. The phones deliver advanced IP telephony features and wideband audio capabilities with an easy-to-use, full-featured voice communications experience on third-party hosted call control.
The line keys on each model are fully programmable. You can set up keys to support either lines, such as directory numbers, or call features, such as speed dialing. You can also boost productivity by handling multiple calls for each directory number, using the multiple-calls-per-line appearance feature. Tricolor LEDs on the line keys support this feature and make the phone simpler to use.
Fixed function keys on all models give you one-touch access to service, messaging, directory, hold/resume, transfer, and conference features. A full-duplex speakerphone lets you set up clear multiparty conferences for flexible, productive collaboration.
The Cisco IP Phone 6800 series maintains the same usability standards and context-sensitive user experience as the Cisco IP Phone 7800 series. The 6851 IP phone features a high-resolution 3.5-inch (396 x 162-pixel) grayscale display with white backlighting for easy reading. Localized language support, including right-to-left onscreen text, meets the needs of global users.
The IP Phone 6800 series is ideal for businesses that want to update their phone system from a traditional analog or digital-based system to an IP communications system with third-party hosted call control services.

• The phones offer an easy-to-use interface and provide a traditional telephony-like user experience
• White backlit, grayscale, 3.5-in. (9-cm) 396 x 162-pixel display
• Scrollable access to calling features and text-based XML applications
• The phone supports backlit indicators for the audio path keys (handset, headset, and speakerphone), select key, line keys, and message waiting
• A volume-control toggle provides easy decibel-level adjustments of the handset, monitor speaker, and ringer
• A full-duplex speakerphone gives you flexibility in placing and receiving calls
• The foot stand holds the phone at an angle, making the display easy to view and the buttons and keys easy to use

• Enhanced audio quality
  With support for voice codecs like G.722, G.729ab, Opus, iLBC, and iSAC, the Cisco IP Phone 6851 delivers clear, high-quality audio for every call, ensuring that every communication is heard with clarity and precision.
• Versatile connectivity
  Equipped with two Ethernet ports supporting 10Base-T/100Base-TX/1000Base-T networks and integrated Power over Ethernet (PoE) support, this phone offers flexible connectivity options and simplifies installation by eliminating the need for additional power supplies.
• Robust call management
  Featuring advanced call services such as Call Forwarding, Call Hold, Call Transfer, Call Waiting, Caller ID, Message Waiting Capability, and Voice Mail, the Cisco IP Phone 6851 enhances productivity and streamlines communication processes.
• Secure communication
  With IEEE 802.1X security and support for VoIP protocols like SIP and SRTP, the Cisco IP Phone 6851 ensures that every call is secure, protecting your communications against potential threats and vulnerabilities.
• Flexible placement options
  Designed with the modern office in mind, the Cisco IP Phone 6851 can be easily placed on a tabletop or mounted on the wall, offering versatility in deployment to suit any workspace layout.

Main Specifications

Extended Specifications

General

Phone Features

IP Telephony

Display

Miscellaneous

Dimensions & Weight (Base)