CP-8851-K9, Cisco IP Phone, BYOD/VGA/Bluetooth

  • Brand: Cisco
  • Model: CP-8851-K9
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List Price: $714.00
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$348.00
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    Overview

    Cisco CP-8851-K9 Overview

    The Cisco CP-8851-K9 is a business-class IP Phone designed for modern enterprise collaboration. It delivers wideband audio with support for codecs such as G.711, G.722, G.729a, iLBC, and iSAC, ensuring clear voice quality across global offices. Rich call handling features, including BLF, mobility, conferencing, and visual voicemail, help distributors and SMB integrators standardize deployments for Asian, European, African, and North American customers. Integrated QoS, SIP over IPv4/IPv6, and strong security make it ideal for secure, scalable corporate telephony.

    Product Highlights

    G.711/722
    HD Audio
    50+ Feats
    Call Suite
    802.1Q/p
    QoS Opts

    Product Applications Scenarios

    Enterprise Network
    Advanced SIP, QoS, and rich call features streamline unified communications, reducing helpdesk tickets and deployment effort for global offices.
    Cloud Services
    SIP over IPv4 and IPv6 integrates securely with hosted PBX or UCaaS platforms, cutting site-based voice infrastructure costs by up to 40%.
    Public Infrastructure
    Robust security, broad language support, and reliable QoS make it ideal for campuses and government sites needing standardized IP telephony.

    Product Features Comparison

      Cisco CP-8851-K9, Cisco IP Phone, BYOD/VGA/Bluetooth Cisco CP-7925G-E-K9, Cisco 7900 Unified IP Phone, Wireless, No battery, No power supply Cisco CP-7975G-CTS, Cisco 7900 Unified IP Phone, 7-inch color touchscreen/6 lines/Gigabit Ethernet Cisco CP-7911G-CH1, Cisco 7900 Unified IP Phone, 1 line, LCD display, 1 RTU License
    Model CP-8851-K9, Cisco IP Phone, BYOD/VGA/Bluetooth CP-7925G-E-K9, Cisco 7900 Unified IP Phone, Wireless, No battery, No power supply CP-7975G-CTS, Cisco 7900 Unified IP Phone, 7-inch color touchscreen/6 lines/Gigabit Ethernet CP-7911G-CH1, Cisco 7900 Unified IP Phone, 1 line, LCD display, 1 RTU License
    Brand Cisco Cisco Cisco Cisco
    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) G.711, G.729, G.722 G.711a, G.711μ, G.722, G.729a G.711, G.729a
    Key call features support + Dialing Abbreviated dialing Adjustable ring tones and volume levels Adjustable display brightness Agent greeting Auto-answer Auto-detection of headset cBarge Busy Lamp Field (BLF) Busy Lamp Field (BLF) Pickup Busy Lamp Field (BLF) speed dial Callback Call forward Call forward notification Call filter Call history lists Call park Call pickup Call timer Call waiting Call chaperone Caller ID Corporate directory Conference, including traditional Join feature Cross Cluster Extension Mobility (EMCC) Direct transfer Extension mobility Fast-dial service Forced access codes and client matter codes Group call pickup Hold Intercom Immediate divert Malicious-caller ID Message-waiting indicator (MWI) Meet-me conference Mobility Music on hold (MoH) Mute Network profiles (automatic) On- and off-network distinctive ringing Personal directory PickUp Predialing before sending Privacy Private Line Automated Ringdown (PLAR) Redial Ring tone per line appearance Service Uniform Resource Locator (URL) Shared line Silent monitoring and recording Speed dial Time and date display Transfer Uniform Resource Identifier (URI) dialing Visual voice mail Voice mail Whisper coaching Speakerphone, voice messaging indicator, vibrate alert n/a Call Hold, Call Transfer, Call Waiting, Conference Call
    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 Wi‑Fi Standards: IEEE 802.11a/b/g Network Protocols: SCCP, SIP Network Interface: 10/100 Ethernet; Protocols: SIP, SCCP
    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 Security Protocols: WEP, WPA, WPA2 n/a n/a
    Operational temperature 32 to 104°F (0 to 40°C) -4°F to 122°F (-20°C to 50°C) 32°F to 104°F (0°C to 40°C) 0 °C to 40 °C (32 °F to 104 °F)
    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) Languages Supported: Multiple languages n/a n/a

    Optional Add-ons

    Model Number Description
    CP-PWR-CUBE-3= Cisco external AC power adapter for compatible IP Phone models including the 8800 Series
    CP-8800-BT-HS Cisco 8800 Series Bluetooth wireless headset optimized for Cisco enterprise IP Phones
    CP-8800-A-KEM Cisco 8800 Key Expansion Module adding programmable line and feature keys

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Cisco CP-8851-K9 Specification

    Model
    CP-8851-K9
    Brand
    Cisco
    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)
    Key call features support
    + Dialing Abbreviated dialing Adjustable ring tones and volume levels Adjustable display brightness Agent greeting Auto-answer Auto-detection of headset cBarge Busy Lamp Field (BLF) Busy Lamp Field (BLF) Pickup Busy Lamp Field (BLF) speed dial Callback Call forward Call forward notification Call filter Call history lists Call park Call pickup Call timer Call waiting Call chaperone Caller ID Corporate directory Conference, including traditional Join feature Cross Cluster Extension Mobility (EMCC) Direct transfer Extension mobility Fast-dial service Forced access codes and client matter codes Group call pickup Hold Intercom Immediate divert Malicious-caller ID Message-waiting indicator (MWI) Meet-me conference Mobility Music on hold (MoH) Mute Network profiles (automatic) On- and off-network distinctive ringing Personal directory PickUp Predialing before sending Privacy Private Line Automated Ringdown (PLAR) Redial Ring tone per line appearance Service Uniform Resource Locator (URL) Shared line Silent monitoring and recording Speed dial Time and date display Transfer Uniform Resource Identifier (URI) dialing Visual voice mail Voice mail Whisper coaching
    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.
    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.
    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
    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
    Physical dimensions (H × W × D)
    9.02 x 10.13 x 1.57in. (229.1 x 257.34 x 40mm) (excluding foot stand)
    Phone-casing composition
    Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic; Cosmetic class A
    Operational temperature
    32 to 104°F (0 to 40°C)
    Nonoperational temperature shock
    14 to 140°F (-10 to 60°C)
    Humidity
    Operating 10 to 90%, noncondensing Non-operating 10 to 95%, noncondensing
    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)
    Certification and compliance
    Regulatory compliance 鈼?nbsp; CE Markings per directives 2004/108/EC and 2006/95/EC Safety 鈼?nbsp; UL 60950 Second Edition 鈼?nbsp; CAN/CSA-C22.2 No. 60950 Second Edition 鈼?nbsp; EN 60950 Second Edition (including A11 & A12) 鈼?nbsp; IEC 60950 Second Edition (including A11 & A12) 鈼?nbsp; AS/NZS 60950 鈼?nbsp; GB4943 EMC - Emissions 鈼?nbsp; 47CFR Part 15 (CFR 47) Class B 鈼?nbsp; AS/NZS CISPR22 Class B 鈼?nbsp; CISPR22: 2005w/Amendment 1: 2005 Class B 鈼?nbsp; EN55022: 2006w/Amendment 1: 2007 Class B 鈼?nbsp; ICES003 Class B 鈼?nbsp; VCCI Class B 鈼?nbsp; EN61000-3-2 鈼?nbsp; EN61000-3-3 鈼?nbsp; KN22 Class B EMC - Immunity 鈼?nbsp; EN55024 鈼?nbsp; CISPR24 鈼?nbsp; EN60601-1-2 鈼?nbsp; KN24 鈼?nbsp; Armadillo Light Telecom 鈼?nbsp; FCC Part 68 HAC 鈼?nbsp; CS-03-HAC 鈼?nbsp; AS/ACIF S004 鈼?nbsp; AS/ACIF S040 鈼?nbsp; NZ PTC 220 鈼?nbsp; Industry Standards: TIA 810 and TIA 920 鈼?nbsp; Industry Standards: IEEE 802.3 Ethernet, IEEE 802.3af and 802.3at 鈼?nbsp; Korea (RRA Public Notification 2010-36, Nov 01, 2010) 鈼?nbsp; Korea (RRA Announce 2011-2, Feb 28, 2011) Radio 鈼?nbsp; FCC Part 2.1093 (BT RF Exposure TR) 鈼?nbsp; RSS-102 (BT RF Exposure TR) 鈼?nbsp; RSS-210 鈼?nbsp; EN 300.328 鈼?nbsp; EN50385 (BT RF Exposure TR) 鈼?nbsp; EN 301-489-1 鈼?nbsp; EN 301-489-17 鈼?nbsp; NCC LP0002 鈼?nbsp; Korea (RRL No. 2006-128, RRL No. 2006-129) 鈼?nbsp; Japan Bluetooth GFSK/EDR
    Weight
    1.81 kg

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    Q&A

    Questions & Answers

    What accessories are available for the Cisco IP Phone CP-8851-K9?

    Accessories for the Cisco IP Phone CP-8851-K9 include headsets, additional handsets, wall mounts, and power adapters.

    How does the Cisco IP Phone CP-8851-K9 compare to other Cisco 8800 series phones?

    The Cisco IP Phone CP-8851-K9 stands out with its widescreen VGA display, Bluetooth connectivity, and high-quality voice communication compared to other models in the series.

    Can the Cisco IP Phone CP-8851-K9 support multiple lines?

    Yes, the Cisco IP Phone CP-8851-K9 supports up to five lines, making it suitable for handling multiple calls simultaneously in a busy office environment.

    Is router-switch.com a reliable distributor?

    Absolutely. As a multi-brand authorized distributor, router-switch.com is directly certified by leading technology manufacturers. We guarantee 100% genuine products, competitive pricing, and full manufacturer warranties and support.

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