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Restock 23-Jun-2026 Estimated, Out of Stock Prices are Estimated.

RRP €300.85
€159.75 Incl Vat




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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 6800 series combines an attractive ergonomic design with "always-on" reliability and secure encrypted communications. The phones deliver advanced IP telephony features and wideband audio capabilities with an easy-to-use, full-featured voice communications experience on third-party hosted call control.

The line keys on each model are fully programmable. You can set up keys to support either lines, such as directory numbers, or call features, such as speed dialing. You can also boost productivity by handling multiple calls for each directory number, using the multiple-calls-per-line appearance feature. Tricolor LEDs on the line keys support this feature and make the phone simpler to use.

Fixed function keys on all models give you one-touch access to service, messaging, directory, hold/resume, transfer, and conference features. A full-duplex speakerphone lets you set up clear multiparty conferences for flexible, productive collaboration.

The Cisco IP Phone 6800 series maintains the same usability standards and context-sensitive user experience as the Cisco IP Phone 7800 series. The 6851 IP phone features a high-resolution 3.5-inch (396 x 162-pixel) grayscale display with white backlighting for easy reading. Localized language support, including right-to-left onscreen text, meets the needs of global users.

The IP Phone 6800 series is ideal for businesses that want to update their phone system from a traditional analog or digital-based system to an IP communications system with third-party hosted call control services.


Specification Summary

Product Description
Cisco IP Phone 6851 - VoIP phone
Product Type
VoIP phone
Main Features
Multiple VoIP protocol support, integrated Ethernet switch
VoIP Protocols
SIP, SRTP
Voice Codecs
G.722, G.729ab, G.711u, G.711a, iLBC, iSAC, Opus
Lines Supported
4 lines
Speakerphone
Yes
Call Services
Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability
Display
LCD display - monochrome - Yes
Network Ports Qty
2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Body Colour
Charcoal
Localisation
United Kingdom
Pricing Type
Remanufactured

Specifications

General
Product Type
VoIP phone
Body Colour
Charcoal
Body Material
ABS polycarbonate
Localisation
United Kingdom
Phone Features
Call Services
Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability
Dialer Location
Base
Conference Call Capability
Yes
Speakerphone
Yes
Indicators
Voice message waiting indicator, speakerphone indicator, headset
Additional Functions
Call timer
IP Telephony
Main Features
Multiple VoIP protocol support, integrated Ethernet switch
VoIP
Yes
VoIP Protocols
SIP, SRTP
Voice Codecs
G.722, G.729ab, G.711u, G.711a, iLBC, iSAC, Opus
Lines Supported
4 lines
Quality of Service
IEEE 802.1Q (VLAN), IEEE 802.1p
IP Address Assignment
DHCP, static
Security
IEEE 802.1X
Power Over Ethernet (PoE) Support
Yes
Network Protocols
SRTP
Network Ports Qty
2 x Ethernet 10Base-T/100Base-TX/1000Base-T
Network Features
Class 2 PoE
Display
Type
LCD display - monochrome
Display Location
Base
Diagonal Size
3.5"
Display Resolution
396 x 162 pixels
Backlit
Yes
Miscellaneous
Connections
Headset jack / RJ-9
Placing / Mounting
Wall-mountable, table-top
Pricing Type
Remanufactured
Dimensions & Weight (Base)
Width
26.5 cm
Depth
3.3 cm
Height
20.7 cm
Weight
615 g

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
Power Devices & Batteries
<%=Left(shortdesc,125) %> (ECE4963322 - CP-6800-PWR-CE=) Availability: 0
CISCO - Power adapter - Europe - for IP Phone 6841, 6851 		€32.63
(ECE4963322 - CP-6800-PWR-CE=) Availability: 0
CISCO - Power adapter - Europe - for IP Phone 6841, 6851
<%=Left(shortdesc,125) %> (ECE4963325 - CP-6800-PWR-UK=) Availability: 6
CISCO - Power adapter - United Kingdom - for IP Phone 6841, 6851
€32.63
(ECE4963325 - CP-6800-PWR-UK=) Availability: 6
CISCO - Power adapter - United Kingdom - for IP Phone 6841, 6851
Accessories
<%=Left(shortdesc,125) %> (ECE4847547 - CP-68KEM-3PCC=) Availability: 0
CISCO - IP Phone 6800 Key Expansion Module - Key expansion module for VoIP phone - for IP Phone 6821, 6841, 6851, 6861, 6871 		€179.75
(ECE4847547 - CP-68KEM-3PCC=) Availability: 0
CISCO - IP Phone 6800 Key Expansion Module - Key expansion module for VoIP phone - for IP Phone 6821, 6841, 6851, 6861, 6871

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