Cisco IP Phone 8851, VoIP phone, SIP, RTCP, RTP, SRTP, SDP, 5 lines, charcoal

Description

The Cisco IP Phone 8851 is a business-class collaboration endpoint that combines high-fidelity, reliable, secure, and scalable voice communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support midsize to large enterprise businesses.
With the Cisco IP Phone 8851, you can increase personal productivity through an engaging user experience that is both powerful and easy-to-use. The IP Phone 8851 combines an attractive ergonomic design with wideband audio for crystal clear voice communications, “always-on” reliability, encrypted voice communications to enhance security, and access to a comprehensive suite of unified communication features from Cisco communication servers.
In addition, Cisco Intelligent Proximity brings the worlds of desk and mobile together for you when you are using your mobile device at the desk for your work. You can move the audio path over to the Cisco IP Phone 8851 during active mobile calls to take advantage of its superior audio acoustics. An example would be to share a conversation with a colleague who you want to listen in. This capability gives you greater flexibility and a superior user experience when at your desk.
The IP Phone 8851 also comes standard with a USB port so you can charge your smartphone when at your desk, and stay connected when away from your desk.
The Cisco IP Phone 8851 offers five programmable line keys. You can configure keys to support either multiple directory numbers or calling features such as speed dial. You can also boost productivity by handling multiple calls for each directory number using the multicall-per-line feature. Fixed-function keys give you one-touch access to applications, messaging, directory, as well as often-used calling features such as hold/resume, transfer, and conference. A five-way navigation cluster helps you transition through menus more easily. Backlit acoustic keys provide flexibility for audio path selection and switching.

• The phone offers an easy-to-use interface and provides a traditional telephony-like user experience
• A full-duplex speakerphone gives you flexibility in placing and receiving calls with hands free
• The analog headset jack is a standard wideband-capable RJ-9 audio port
• Line keys
• Soft keys
• Back and release keys
• Four-way navigation and select keys
• Hold/resume, transfer, and conference keys
• Messaging, application, and directory keys
• Standard keypad
• Volume-control toggle key
• Speakerphone, headset, and mute keys

• Enhanced connectivity
  Equipped with 2 x Ethernet 10Base-T/100Base-TX/1000Base-T network ports, the Cisco IP Phone 8851 ensures seamless connectivity and integration into a variety of network environments, facilitating high-speed communications and data transfer.
• Superior audio quality
  Featuring a wide range of voice codecs including G.711a, G.711u, G.722, G.729a, iLBC, and iSAC, the Cisco IP Phone 8851 delivers clear voice quality, enhancing the overall communication experience.
• Advanced call handling
  With support for 5 lines and multiple VoIP protocol support, including SIP and SRTP, this phone offers advanced call services such as Call Forwarding, Call Hold, Call Transfer, and Voice Mail, making it an ideal solution for dynamic business environments.
• High-definition display
  The 5-inch LCD display with a resolution of 800 x 480 pixels, backlit for improved visibility, offers 24-bit color support, providing a vibrant, clear view of call and directory information.
• Secure communication
  Incorporating security protocols like IEEE 802.1X and TLS, along with Quality of Service (QoS) features, the Cisco IP Phone 8851 ensures secure and prioritized voice traffic, safeguarding sensitive information.

Main Specifications

Documents

• Product Data Sheet / Brochure
• User Manual
• Quick Start Guide

Extended Specifications

General

Phone Features

IP Telephony

Display

Miscellaneous

Dimensions & Weight (Base)