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Cisco CP-8851-K9= desk phone with 5-inch colour display and Bluetooth

Cisco Systems, Inc.

Cisco Systems, Inc. CP-8851-K9= IP telephone 5" 800x480 Bluetooth

SKU CH-YVVD-7KEPQ MPN CP-8851-K9=

A 5-inch colour VoIP desk phone with 800×480 display, Bluetooth headset support and Gigabit PoE

  • TypeWired VoIP
  • StandardsCISPR 22 Class B, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55
  • ProtocolsIP, TFTP, UDP, Cisco Discovery Protocol (CDP), HTTP, DNS, HT
  • SecurityIEEE 802.1X, TLS
  • DisplayType: LCD display - color Display Location: Base Diagonal Si
  • Weight3.6
  • Sharp visuals from a 5 inch 800 x 480 colour LCD
  • Hands-free mobile pairing via Bluetooth HFP and PBAP
  • Clear conversations with wideband audio and echo cancellation
  • Flexible headset choice across wired USB and Bluetooth
  • Expandable control with optional 72 key module

5-inch colour VGA display phone

The Cisco CP-8851-K9= is a wired VoIP telephone built around a 5-inch backlit LCD showing 800 x 480 pixels at 24-bit colour depth. It targets office workers who need wideband audio, five programmable line keys and Bluetooth pairing for mobile integration. The handset supports Power over Ethernet plus a USB port for wired or wireless headsets. Buyers who need a colour screen with physical buttons will find the feature set matches that role.

Upgrade from monochrome

Moving from a monochrome two-line set or a non-backlit 3.5-inch model adds readable call data, colour-coded line status and the 5 programmable keys that reduce menu navigation. The jump is worth it when staff handle multiple simultaneous calls, need Bluetooth headset freedom or require the optional key expansion module for up to 72 extra buttons. Sites staying with single-line analogue handsets or softphone-only deployments will not use the hardware keys or PoE cabling this unit provides.

Sustained daily use in open-plan offices

The phone draws power continuously from the Ethernet switch, so there is no separate adapter to fail during long shifts. Wideband audio with echo cancellation keeps voice quality stable across back-to-back calls, while the 24-bit display remains legible under fluorescent lighting without flicker. Bluetooth hands-free and phonebook profiles stay paired through hot-desking handovers. Environments that power-cycle switches nightly or rely on Wi-Fi-only endpoints will see different reliability behaviour.

Highlights

  • Sharp visuals from a 5 inch 800 x 480 colour LCD
  • Hands-free mobile pairing via Bluetooth HFP and PBAP
  • Clear conversations with wideband audio and echo cancellation
  • Flexible headset choice across wired USB and Bluetooth
  • Expandable control with optional 72 key module

Specifications

BrandCisco
ModelCP-8851-K9=
TypeWired VoIP
StandardsCISPR 22 Class B, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, EN55022 Class B, ICES-003 Class B, EN 300.328, EN 301.489.1, EN 301.489.17, AS/ACIF S004, RSS-210, RSS-102, FCC Part 68, ADA, CS-03, UL 60950-1 Second Edition, EN 60601-1-2, FCC CFR47 Part 15 B, GB 4943, AS/NZS 60950, HAC (Hearing Aid Compatible), CSA C22.2 No. 60950-1 Second Edition, EN 60950-1 Second Edition, IEC 60950-1 Second Edition
ProtocolsIP, TFTP, UDP, Cisco Discovery Protocol (CDP), HTTP, DNS, HTTPS, SRTP, Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED), RTCP, RTP
SecurityIEEE 802.1X, TLS
DisplayType: LCD display - color
Display Location: Base
Diagonal Size: 5"
Display Resolution: 800 x 480 pixels
Color Depth: 24-bit (16.7 million colors)
Backlit: Yes
Display Languages: Danish, Hebrew, Hungarian, Czech, Croatian, Slovenian, Thai, Slovak, Brazilian Portuguese, English, German, French, Italian, Norwegian, Portuguese, Polish, Finnish, Swedish, Russian, Spanish, Dutch, Greek, Turkish, Arabic, Bulgarian, Latvian, Lithuanian, Estonian, Serbian, Romanian, Catalan, Japanese, Chinese, Korean
Weight3.6
FeaturesWireless Interface Provided: Bluetooth
Bluetooth Profiles: Hands-Free Profile (HFP), Phonebook Access Profile (PBAP)
Call Services: Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability
Key Expansion Module Max Qty: 2
Dialer Type: Keypad
Dialer Location: Base
Conference Call Capability: Yes
Intercom: Yes
Speakerphone: Yes (digital duplex)
Menu Operation: Yes
Programmable Buttons Qty: 5
Indicators: Voice message waiting indicator, speakerphone indicator, headset
Firmware Upgradable: Yes
Additional Functions: Call timer, Intercom
Add
Shipping weight1.36 kg
Package size381 × 381 × 127 mm

Questions about this item

Does the CP-8851-K9= include the wall-mount bracket or is it sold separately?

The manufacturer highlights state a wall-mount option is available, indicating the bracket is an optional accessory sold separately.

Which Ethernet port should the PoE switch connect to for correct power and data?

Connect the PoE switch to the network port labelled SW or Network; the second port labelled PC is for daisy-chaining a computer.

How long does the Bluetooth pairing stay active before the phone requires re-pairing?

The phone maintains the Bluetooth link indefinitely; re-pairing is only needed if the mobile device forgets the CP-8851-K9= or its Bluetooth radio is reset.

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