Cisco IP Phone 8851 CP K9 Unified IP Endpoint VoIP Video Phone

Cisco IP Phone 8851 CP K9 Unified IP Endpoint VoIP Video Phone

The Cisco IP Phone 8851 is a business-class collaboration endpoint that combines high-fidelity, reliable, secure, and scalable voice-over IP communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support small 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 new 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 on-premises and hosted infrastructure platforms.

It is also supported by third-party hosted call control services.

Datasheet: Cisco IP Phone 8851 CP K9 Unified IP Endpoint VoIP Video Phone

Essential details of Cisco 8851 VoIP phone 

Product Type: VoIP Phone

Device Type: IP phone lines 

Supported: 5 lines

Ports: 2

Electronic hookswitch of Cisco IP Phone 8851

You can control the hookswitch electronically with a third-party headset connected to either the USB port or auxiliary port or directly paired with the phone through Bluetooth.

Security features of Cisco IP Phone 8851

• Secure boot
• Secure credential storage
• Device authentication
• Configuration file authentication and encryption
• Image authentication
• Random bit generation
• Hardware cryptographic acceleration
• Certificate Authority Proxy Function (CAPF)
• Manufacturer-Installed Certificates (MIC)
• Locally Significant Certificates (LSC)
• Ethernet 802.1x supplicant options:
• Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling (EAP-FAST) and Extensible Authentication Protocol-Transport Layer Security (EAP-TLS)
• Signaling authentication and encryption using TLS
• Media authentication and encryption using SRTP
• HTTPS for client and server
• Secure Shell (SSH) Protocol server
• Secure Sockets Layer (SSL)-based VPN client

Cisco Intelligent Proximity

• Audio path moving sends audio through the IP Phone 8851 for a mobile device-connected call.
• Call history synchronization allows you to view placed and missed calls of your mobile device from the
  IP Phone 8851.
• Contact synchronization allows you to synchronize the contact objects from your mobile device to your
  IP Phone 8851.

Physical dimensions of Cisco IP Phone 8851
(H × W × D)
9.02 x 10.13 x 1.57 in. (229.1 x 257.34 x 40 mm) (excluding foot stand)
Weight (with a handset)
2.62 lb (1.19 kg)
Audio codec support
G.711 a-law and mu-law, G.722, G.729a, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC)
Phone-casing composition
Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic; Cosmetic class A

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