Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9)
Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9)
Cisco

Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9) | New

SKU: CP-8851-3PCC-K9-N
Condition: New
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$169.99
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The Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9) is to provide enterprises with enterprise-grade, adaptable and secure unified communications. This cutting-edge VoIP phone, which combines an eye-catching 5-inch widescreen color display with user-friendly navigation, is designed for smooth interaction with third-party SIP platforms, making daily call handling simple and effective. With support for a large number of cloud and hosted PBX providers, the multiplatform firmware allows compatibility beyond Cisco's own solutions, making it perfect for businesses moving to open SIP or hybrid environments.

The Cisco 8851 guarantees crystal-clear discussions in busy office environments with its wideband audio, full-duplex speakerphone and sophisticated noise reduction. Personalized, effective communications are at your fingertips thanks to built-in Bluetooth, a USB connector for tethered or wireless headsets and support for up to five programmed lines. PoE-enabled dual gigabit Ethernet ports optimize desktop productivity and simplify network integration. Sensitive information is safeguarded by the phone's strong security architecture, which includes cutting-edge encryption, while user comfort and quick adoption are promoted by the ergonomic design and customisable keys.

Quick specs

Product Type
IP Phone
Body Colour
Charcoal
Body Material
ABS plastic
Wireless Interface Provided
Bluetooth
Bluetooth Profiles
Hands-Free Profile (HFP), Phonebook Access Profile (PBAP)
Key Expansion Module Max Qty
2

Key Features

  • 5-inch Color Display with high-resolution, 800x480 pixels, 24-bit color screen for easy navigation and crystal-clear visuals.

  • Multiplatform SIP Compatibility with fully supports third-party call control systems, including Broadsoft, Asterisk and others—perfect for open SIP deployments.

  • Five Programmable Line Keys with flexible handling for multiple SIP accounts, speed dials and advanced call features.

  • Wideband Audio & Full-Duplex Speakerphone delivers exceptional HD voice quality with dynamic noise reduction and echo cancellation.

  • Bluetooth 3.0 & USB Support with native wireless headset integration and a USB port for charging mobile devices or connecting headsets.

  • Dual Gigabit Ethernet Ports with PoE streamlines cabling and provides high-speed network and PC pass-through connectivity.

  • Integrated Headset Port (RJ9) with easy plug-and-play support for professional wired headsets.

  • Expansion Module Support adds up to two key expansion modules for high call volumes.

  • Advanced Security Features with encrypted voice signaling, device authentication and secure firmware for enterprise-level protection.

  • Ergonomic Design with adjustable stand, backlit keys and wall-mountable flexibility for diverse workspace layouts.

Benefits

  • Open multiplatform firmware connects with most SIP-based UCaaS and hosted PBX providers, ensuring smooth migration and scalability for growing organizations.
  • Wideband audio and robust acoustic technology foster clear, natural conversations—minimizing workplace distractions and errors.
  • Five programmable lines and customizable soft keys streamline multitasking, call handling and everyday operations for busy professionals.
  • Bluetooth and USB support enable flexible headset choices and mobile device charging—ideal for dynamic workstations.
  • Encrypted communications, secure firmware and device authentication safeguard sensitive calls and data from evolving cyber threats.
  • PoE simplifies installation, while multiplatform support reduces IT overhead and re-training costs.
  • Large, high-resolution screen and intuitive phone interface reduce learning curves and improve user satisfaction from day one.
  • Compatible with key expansion modules and supports advanced SIP features to grow alongside your business.
Manufacturer Cisco
Manufacturer Part Number CP-8851-3PCC-K9
Product Name Cisco 8851 IP Phone with Multiplatform Firmware
Product Type IP Phone
Body Colour Charcoal
Body Material ABS plastic
Wireless 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
Speakerphone Yes
Programmable Buttons Qty 5
Indicators Voice message waiting indicator, speakerphone indicator, headset
Firmware Upgradable Yes
Additional Functions Call timer, Intercom
Main Features Multiple VoIP protocol support, integrated Ethernet switch
VoIP Yes
VoIP Protocols SIP, RTCP, RTP, SRTP, SDP
Voice Codecs G.722, G.729a, G.711u, G.711a, iLBC, iSAC
Lines Supported 5 lines
Quality of Service IEEE 802.1Q (VLAN), IEEE 802.1p
Security IEEE 802.1X, TLS
Power Over Ethernet (PoE) Support Yes
Network Protocols IP, TFTP, UDP, Cisco Discovery Protocol (CDP), HTTP, DNS, HTTPS, SRTP, Link Layer Discovery Protocol - Media Endpoint Discovery (LLDP-MED), RTCP, RTP
Network Ports Qty 2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Network Features Class 3 PoE
Type LCD display - colour
Display Location Base
Diagonal Size 5"
Display Resolution 800 x 480 pixels
Colour Depth 24-bit (16.7 million colours)
Backlit Yes
Connections Headset jack / RJ-9 ¦ Electronic hook switch (EHS) ¦ USB
Hearing Aid Compatible Yes
Placing / Mounting Wall-mountable, table mount
Width 25.734 cm
Depth 4 cm
Height 22.91 cm
Weight 1.19 kg

Frequently Asked Questions

Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9) | New

What makes the multiplatform firmware special?
It enables the 8851 to operate natively with Cisco UCM, Jabber, Webex Calling, BroadSoft and Microsoft Teams—ideal for mixed UC deployments.
How do I switch platforms?
IT admins can provision firmware images via Cisco UCM or Expressway, or use phone settings to select the desired platform.
Does it support Microsoft Teams?
Yes, the CP‑8851‑3PCC‑K9 includes Teams-certified firmware for native Teams calling with a familiar interface.
What codecs are supported for audio?
It supports G.711, G.722 (wideband), G.729, and Opus (super-wideband on supported platforms).
Can I use a USB headset?
Yes—USB 2.0 port and analog headset jack both support wired USB or analog headsets.
Does it support Power over Ethernet?
Yes—one GigE port supports 802.3at PoE+; the other provides pass-through.
Is a wall-mount option available?
Yes—the standard stand includes mounting holes; adapters are sold separately.
What level of security is provided?
Includes secure boot, Trust Anchor, encrypted signaling/media, and folder integrity checks.
Can I charge accessories via USB?
The USB port provides 500 mA at 5 V, suitable for charging headsets or small devices.
What is Acoustic Shield?
Cisco’s audio innovation that filters background noise so your voice and your caller’s voice are heard clearly.
Is visual voicemail supported?
Yes—on compatible platforms like Cisco UCM and Webex Calling.
How many lines can it support?
Up to seven lines or features can be mapped to the programmable keys.
What kind of power supply is required if not using PoE?
An optional Cisco 12 VDC, 380 mA power adapter (not included) may be used.
Will it receive regular firmware updates?
Yes—Cisco regularly provides updates to support new features and security patches.
Does it support conference calling?
Yes—conference features are available natively or via platform integration.
Can it integrate with contact center systems?
Yes—can be used in Cisco Finesse and other Unified Contact Center solutions.
Is Bluetooth or Wi‑Fi supported?
No built-in Bluetooth or Wi‑Fi; USB dongles may be added via USB port, subject to driver support.
Is it suitable for executive desktops?
Yes—it strikes a solid balance of premium features and aesthetic fit for office users.
Is the phone future-proof?
Absolutely—support for multiple UC platforms and modular firmware ensure long-term usability.
What are the main advantages of using the Cisco 8851?
The primary benefits are high-definition audio and video, flexible deployment options, advanced security features, and increased user productivity.
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Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9)

Cisco 8851 IP Phone with Multiplatform Firmware (CP-8851-3PCC-K9) | New

Cisco

$169.99