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 on third party hosted call control services.
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.
Additionally, Cisco has adopted circular design principles in its products by pioneering the use of post-consumer recycled plastic. The 8851 is one of the models that now reduces the use of natural resources while closing the loop with its own electronic waste. Learn more about what this means by visiting the Cisco’s Circular Economy website.
Other key features of the phone follow:
● The Cisco IP Phone 8851 offers a 5-in. high-resolution (800 x 480) widescreen VGA backlit color display. Localized language support, including right-to-left on-screen text, meets the needs of global users.
● The phone supports a built-in Gigabit Ethernet switch for your PC connection.
● Support for Cisco EnergyWise™ technology makes the Cisco IP Phone 8851 more energy-efficient and ecofriendly; the phone is qualified by the Energy Star organization.
● An optional wall-mount kit is orderable as a spare part for customers seeking this capability.
● Up to two optional IP Phone 8800 Key Expansion Modules with up to 56 additional line/feature keys are supported.
Key Features
- Ergonomic design
- Graphical display
- Handset
- Speaker phone
- Analog headset
- AUX port
- USB
- Ethernet switch
- Bluetooth
- Backlit indicator
- Replaceable bezel
- Dual-position foot stand
- Wall-mountable
Technical Specifications
Audio |
● Automatic Gain Control
● Comfort Noise Generation
● Silence Suppression/Voice Activity Detection
● Acoustic Echo Cancellation (AEC)
● Dynamic Noise Reduction
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Audio codec support |
● G.711 a-law and mu-law, G.722, G.729a/b, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC), G.722.1, G.772.2, OPUS
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Key call features support |
● + Dialing
● Abbreviated dialing
● Adjustable ring tones and volume levels
● cBarge
● Busy Lamp Field (BLF)
● Busy Lamp Field (BLF) Pickup
● Busy Lamp Field (BLF) speed dial
● Call filter
● Call chaperone
● Cross Cluster Extension Mobility (EMCC)
● Mobility
● Mute
● PickUp
● Private Line Automated Ringdown (PLAR)
● Silent monitoring and recording
● Speed dial
● Time and date display
● Transfer
● Uniform Resource Identifier (URI) dialing
● Visual voice mail
● Voice mail
● Whisper coaching
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Electronic hookswitch |
● 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.
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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. |
Quality-of-service (QoS) options |
● The phone supports Cisco Discovery Protocol and 802.1Q/p standards, and can be configured with an 801.1Q VLAN header containing the VLAN ID overrides configured by the Admin VLAN ID.
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Network features |
● Session Initiation Protocol (SIP) for signaling
● Session Description Protocol (SDP)
● IPv4 and IPv6
● User Datagram Protocol (UDP) (used only for Real-Time Transport Protocol [RTP] streams)
● Dynamic Host Configuration Protocol (DHCP) client or static configuration
● Gratuitous Address Resolution Protocol (GARP)
● Domain Name System (DNS)
● Trivial File Transfer Protocol (TFTP)
● Secure Hypertext Transfer Protocol (HTTPS)
● VLAN
● Real-Time Transport Protocol (RTP)
● Real-Time Control Protocol (RTCP)
● Cisco Peer-to-Peer Distribution Protocol (PPDP)
● Cisco Discovery Protocol
● LLDP (including LLDP-MED)
● Switch speed auto-negotiation
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Security features |
● 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 Later (SSL)-based VPN client
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Physical dimensions |
● 9.02 x 10.13 x 1.57 in. (229.1 x 257.34 x 40 mm) (excluding foot stand)
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Weight (with handset) |
● 2.62 lb (1.19 kg)
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Phone-casing composition |
● Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic; Cosmetic class A
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Operational temperature |
● 32 to 104°F (0 to 40°C)
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Nonoperational temperature shock |
● 14 to 140°F (-10 to 60°C)
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Humidity |
● Operating 10 to 90%, noncondensing
● Non-operating 10 to 95%, noncondensing
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Language support |
● Arabic (Arabic Area)
● Bulgarian (Bulgaria)
● Catalan (Spain)
● Chinese (China)
● Chinese (Hong Kong)
● Chinese (Taiwan)
● Croatian (Croatia)
● Czech (Czech Republic)
● Danish (Denmark)
● Dutch (Netherlands)
● English (United Kingdom)
● Estonian (Estonia)
● French (France)
● French (Canada)
● Finnish (Finland)
● German (Germany)
● Greek (Greece)
● Hebrew (Israel)
● Hungarian (Hungary)
● Italian (Italy)
● Japanese (Japan)
● Latvian (Latvia)
● Lithuanian (Lithuania)
● Korean (Korea Republic)
● Norwegian (Norway)
● Polish (Poland)
● Portuguese (Portugal)
● Portuguese (Brazil)
● Romanian (Romania)
● Russian (Russian Federation)
● Spanish (Columbia)
● Spanish (Spain)
● Slovak (Slovakia)
● Swedish (Sweden)
● Serbian (Republic of Serbia)
● Serbian (Republic of Montenegro)
● Slovenian (Slovenia)
● Thai (Thailand)
● Turkish (Turkey)
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Certification and compliance |
● Regulatory compliance
◦ CE Markings per directives 2004/108/EC and 2006/95/EC
● Safety
◦ UL 60950 Second Edition
◦ CAN/CSA-C22.2 No. 60950 Second Edition
◦ EN 60950 Second Edition (including A11 & A12)
◦ IEC 60950 Second Edition (including A11 & A12)
◦ AS/NZS 60950
◦ GB4943
● EMC - Emissions
◦ 47CFR Part 15 (CFR 47) Class B
◦ AS/NZS CISPR22 Class B
◦ CISPR22: 2005 w/Amendment 1: 2005 Class B
◦ EN55022: 2006 w/Amendment 1: 2007 Class B
◦ ICES003 Class B
◦ VCCI Class B
◦ EN61000-3-2
◦ EN61000-3-3
◦ KN22 Class B
● EMC - Immunity
◦ EN55024
◦ CISPR24
◦ EN60601-1-2
◦ KN24
◦ Armadillo Light
● Telecom
◦ FCC Part 68 HAC
◦ CS-03-HAC
◦ AS/ACIF S004
◦ AS/ACIF S040
◦ NZ PTC 220
◦ Industry Standards: TIA 810 and TIA 920
◦ Industry Standards: IEEE 802.3 Ethernet, IEEE 802.3af and 802.3at
◦ Korea (RRA Public Notification 2010-36, Nov 01, 2010)
◦ Korea (RRA Announce 2011-2, Feb 28, 2011)
● Radio
◦ FCC Part 2.1093 (BT RF Exposure TR)
◦ RSS-102 (BT RF Exposure TR)
◦ RSS-210
◦ EN 300.328
◦ EN50385 (BT RF Exposure TR)
◦ EN 301-489-1
◦ EN 301-489-17
◦ NCC LP0002
◦ Korea (RRL No. 2006-128, RRL No. 2006-129)
◦ Japan Bluetooth GFSK/EDR
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- Product Type:
- IP Phone