Login/Register
Help
Images for illustrative purposes
<%=manufacture1 %> Logo FREE Delivery on orders over €250

0 Available to Ship
Restock 03-Aug-2026 Estimated, Out of Stock Prices are Estimated.

RRP €1064.96
€609.75 Incl Vat




Wishlist Compare Share

Overview

Range/Series Overview


IMPORTANT: This Range/Series overview section describes the range of which this product belongs. Features of different versions might be mentioned and may not apply to the specific product on this page. Please view Specs for specification of product.

The Cisco IP Phone 8851 is a business-class collaboration endpoint that combines high-fidelity, reliable, secure, and scalable voice communications with Cisco Intelligent Proximity for telephony integration for personal mobile devices to support midsize 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 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 communication servers.

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.


Features Summary

  • Enhanced connectivity
    Equipped with 2 x Ethernet 10Base-T/100Base-TX/1000Base-T network ports, the Cisco IP Phone 8851 ensures seamless connectivity and integration into a variety of network environments, facilitating high-speed communications and data transfer.
  • Superior audio quality
    Featuring a wide range of voice codecs including G.711a, G.711u, G.722, G.729a, iLBC, and iSAC, the Cisco IP Phone 8851 delivers clear voice quality, enhancing the overall communication experience.
  • Advanced call handling
    With support for 5 lines and multiple VoIP protocol support, including SIP and SRTP, this phone offers advanced call services such as Call Forwarding, Call Hold, Call Transfer, and Voice Mail, making it an ideal solution for dynamic business environments.
  • High-definition display
    The 5-inch LCD display with a resolution of 800 x 480 pixels, backlit for improved visibility, offers 24-bit color support, providing a vibrant, clear view of call and directory information.
  • Secure communication
    Incorporating security protocols like IEEE 802.1X and TLS, along with Quality of Service (QoS) features, the Cisco IP Phone 8851 ensures secure and prioritized voice traffic, safeguarding sensitive information.

Specification Summary

Product Description
Cisco IP Phone 8851 - VoIP phone
Product Type
VoIP phone
Compatible Platforms
Cisco Business Edition 6000
Main Features
Multiple VoIP protocol support, integrated Ethernet switch
VoIP Protocols
SIP, RTCP, RTP, SRTP, SDP
Voice Codecs
G.722, G.729a, G.711u, G.711a, iLBC, iSAC
Lines Supported
5 lines
Intercom
Yes
Speakerphone
Yes (digital duplex)
Call Services
Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability
Display
LCD display - colour - Yes
Network Ports Qty
2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Compatible Software
Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution, Cisco Unified Communications Manager Express 10.0 or later
Body Colour
White
Image Colour Disclaimer
The displayed product image may be a different colour
Manufacturer Warranty
1-year warranty

Specifications

EAN / GTIN:
882658796128
General
Product Type
VoIP phone
Compatible Platforms
Cisco Business Edition 6000
Body Colour
White
Image Colour Disclaimer
The displayed product image may be a different colour
Body Material
ABS plastic
Phone Features
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
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
Additional Features
Music on hold, BLF status lamps, compatible with Bluetooth headsets
IP Telephony
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
Compatible Software
Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution, Cisco Unified Communications Manager Express 10.0 or later
Network Features
Class 3 PoE
Display
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
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
Miscellaneous
Connections
Headset jack / RJ-9 ¦ Electronic hook switch (EHS) ¦ USB
Hearing Aid Compatible
Yes
Placing / Mounting
Wall-mountable, table mount
Compliant Standards
CISPR 22 Class B, CISPR 24, EN 61000-3-2, EN 61000-3-3, EN55024, EN55022 Class B, ICES-003 Class B, 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, EN 300 328, EN 301 489-1, EN 301 489-17
Dimensions & Weight (Base)
Width
25.734 cm
Depth
4 cm
Height
22.91 cm
Weight
1.19 kg
Manufacturer Warranty
Service & Support
Limited warranty - replacement - 1 year

Essential Bundles

Options


Headsets & Microphones
<%=Left(shortdesc,125) %> (ECE4710804 - CP-HS-W-531-RJ=) Availability: 0
CISCO - 531 Wired Single - Headset - on-ear - wired - for IP Phone 68XX, 78XX, 88XX, Unified IP Phone 79XX 		€136.33
(ECE4710804 - CP-HS-W-531-RJ=) Availability: 0
CISCO - 531 Wired Single - Headset - on-ear - wired - for IP Phone 68XX, 78XX, 88XX, Unified IP Phone 79XX
<%=Left(shortdesc,125) %> (ECE4710805 - CP-HS-W-532-RJ=) Availability: 3
CISCO - 532 Wired Dual - Headset - on-ear - wired - for IP Phone 6841, 6851, 7821, 7841, 7861, 8811, 8841, 8845, 8851, 8861, 8865, 8865NR
€152.63
(ECE4710805 - CP-HS-W-532-RJ=) Availability: 3
CISCO - 532 Wired Dual - Headset - on-ear - wired - for IP Phone 6841, 6851, 7821, 7841, 7861, 8811, 8841, 8845, 8851, 8861, 8865, 8865NR
<%=Left(shortdesc,125) %> (ECE4710807 - CP-HS-W-531-USBA=) Availability: 0
CISCO - 531 Wired Single - Headset - on-ear - wired - for Cisco DX70, DX70 - MSRP, DX80, DX80 (No Radio), IP Phone 8851, 8861, 8865, 8865NR 		€201.73
(ECE4710807 - CP-HS-W-531-USBA=) Availability: 0
CISCO - 531 Wired Single - Headset - on-ear - wired - for Cisco DX70, DX70 - MSRP, DX80, DX80 (No Radio), IP Phone 8851, 8861, 8865, 8865NR
<%=Left(shortdesc,125) %> (ECE4710808 - CP-HS-W-532-USBA=) Availability: 0
CISCO - 532 Wired Dual - Headset - on-ear - wired - for Cisco DX70, DX70 - MSRP, DX80, DX80 (No Radio), IP Phone 8851, 8861, 8865, 8865NR 		€217.86
(ECE4710808 - CP-HS-W-532-USBA=) Availability: 0
CISCO - 532 Wired Dual - Headset - on-ear - wired - for Cisco DX70, DX70 - MSRP, DX80, DX80 (No Radio), IP Phone 8851, 8861, 8865, 8865NR
<%=Left(shortdesc,125) %> (ECE5663544 - HS-WL-730-BUNA-P) Availability: 0
CISCO - Headset 730 - Headset - on-ear - Bluetooth - wireless - active noise cancelling - USB, 3.5 mm jack - platinum - for Cisco DX70, DX80, IP DECT Phone 6825, IP Phone 88XX, Unified Wireless IP Phone 8821 		€409.75
(ECE5663544 - HS-WL-730-BUNA-P) Availability: 0
CISCO - Headset 730 - Headset - on-ear - Bluetooth - wireless - active noise cancelling - USB, 3.5 mm jack - platinum - for Cisco DX70, DX80, IP DECT Phone 6825, IP Phone 88XX, Unified Wireless IP Phone 8821
Accessories
<%=Left(shortdesc,125) %> (ECE3251549 - CP-8800-WMK=) Availability: 0
CISCO - Telephone wall mount kit for VoIP phone - for IP Phone 8841, 8851, 8861 		€76.37
(ECE3251549 - CP-8800-WMK=) Availability: 0
CISCO - Telephone wall mount kit for VoIP phone - for IP Phone 8841, 8851, 8861
<%=Left(shortdesc,125) %> (ECE4101414 - CP-BEKEM-RF) Availability: 0
CISCO - (**REFURBISHED**) Cisco - Key expansion module for VoIP phone - remanufactured - for IP Phone 8851, 8861 		€235.14
(ECE4101414 - CP-BEKEM-RF) Availability: 0
CISCO - (**REFURBISHED**) Cisco - Key expansion module for VoIP phone - remanufactured - for IP Phone 8851, 8861
<%=Left(shortdesc,125) %> (ECE4951988 - CP-8800-A-KEM-RF) Availability: 0
CISCO - (**REFURBISHED**) Cisco IP Phone 8800 - Key expansion module for VoIP phone - remanufactured - for IP Phone 8851, 8861 		€379.75
(ECE4951988 - CP-8800-A-KEM-RF) Availability: 0
CISCO - (**REFURBISHED**) Cisco IP Phone 8800 - Key expansion module for VoIP phone - remanufactured - for IP Phone 8851, 8861

Reviews

Showcase

Recently viewed items
ECE3415755
CISCO - IP Phone 8851 - VoIP phone - SIP, RTCP, RTP, SRTP, SDP - 5 lines - white
 
Free Delivery
€609.75
 
ECE7862031
CISCO - Rack mounting kit - 1U - 23" - for ME 2400-24TS, 3400-24TS
 
€71.92