Brand: Cisco | TelephonesCisco TelephonesCisco 6851 IP phone Black Wired handset 4 lines Wi-Fi

Cisco 6851 IP phone Black Wired handset 4 lines Wi-Fi

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General Information

General Information for Cisco

Cisco 6851, Black, Wired handset, White, 396 x 162 pixels, 8.89 cm (3.5"), Monochrome

The Cisco IP Phone 6800 Series with Multiplatform Phone (MPP) Firmware is a cost-effective, high-fidelity voice communications portfolio designed to improve your organizations person-to-person communications while reducing your operating costs on approved Unified- Communications-as-a-Service (UCaaS) platforms.

The 6800 Series combines an attractive, new 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.

The Cisco IP Phone 6800 Series provides four phone models (and an optional Key Expansion Module) to the Cisco Multiplatform P
hone (MPP) portfolio (Figure 1):
- Cisco IP Phone 6851 with Multiplatform Firmware, supporting four SIP registrations
Only the 6851 supports the Key Expansion Module (KEM).

Cisco IP Phone 6800 Series product overview

The line buttons on each model are fully programmable. You can set up line buttons to support either SIP registrations, or call features, such as speed dialing. You can also boost productivity by handling multiple calls for each SIP registration, using the multiple-calls-per-line appearance feature. Tricolor LEDs on the line buttons support the calling features and make the phone simple to use.

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Cisco IP Phone 6800 Key Expansion Module product overview

The Cisco IP Phone 6800 Key Expansion Module (KEM) extends the capabilities of the Cisco IP Phone 6851 with additional buttons. This module adds 14 physical buttons along with access to 14 additional buttons via the page buttons, for a total of 28 additional buttons. The KEM supports the Programmable Line Key (PLK) function, but does not support any SIP registrations. Calls may be monitored and answered using the PLK function, but calls may not initiated from the KEM. The 6851 IP phone supports one KEM only.
Fixed function buttons on the 6800 series phones 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 6800 series provides exceptional noise isolation when used with a Cisco 500 Series Headset.

The Cisco IP Phone 6800 Series maintains the same usability standards and standards for a context-sensitive user experience as the Cisco IP Phone 7800 Series. The 6821 IP phone has a 2.5-inch (240x120-pixel) grayscale display with white backlighting for easy reading. The 6861 has a 3.2-inch (320x120-pixel) LCD. The 6841 and 6851 IP phones each have a high-resolution 3.5-inch (396x162-pixel) grayscale display with white backlighting. The 6871 IP phone has a high-resolution 3.5-inch (480x272-pixel) color LCD. Localized language support is available for global users. See Table 6 for a list of available languages.

The 6800 Series is also energy-efficient and eco-friendly, to support green initiatives. The 6821 and 6851 support Power over Ethernet (PoE) Class 2. The 6871 supports Power over Ethernet (PoE) Class 3. The 6821, 6841, 6851, 6861 and 6871 are Energy Star certified. The 6841, 6851, 6861 and 6871 support a power-save option that reduces power consumption during off-hours, saving costs by increasing energy efficiency.

The 6861 phone is Wi-Fi enabled phone in 6800 series. It supports built-in dual band Wi-Fi up to 802.11n. Also provides reliable wireless connection and convenient connection to access point via WPS (Wi-Fi Protected Setup).

The 6800 Series is ideal for businesses that want to update their phone systems from traditional analog or digital-based systems to an IP communications system with supported multiplatform call control systems.

Manufacturer Supplied Images
Please note, these images are supplied by the manufacturer and are for illustration purposes only. If you have any queries about this product, please contact us and we will be happy to help.

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Supplied With
  • 100% Genuine Product
  • Quzo 21 Day Returns Policy - T&C Apply
  • All Official Packaging
  • All Applicable Guarantee(s)
  • Instruction Manuals and Documentation (where applicable)
  • Email when item is despatched.
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Further details for this product, 6851, can be found at the manufacturer website. Please note, these web addresse(s) are supplied by 3rd parties, Quzo is not responsible for the content.

3.5" 396 x 162, RJ-9, 4 lines (SIP registrations)

Cisco 6851. Product colour: Black, Handset type: Wired handset, Backlight colour: White. Display resolution: 396 x 162 pixels, Display diagonal: 8.89 cm (3.5"), Display number of colours: Monochrome. Lines quantity: 4 lines. Ethernet LAN interface type: Gigabit Ethernet, Ethernet LAN data rates: 10,100,1000 Mbit/s, Supported network protocols: WEP, WPA-PSK, WPA2-PSK, EAP-FAST, PEAP-GTC, PEAP-MSCHAP2. Width: 207 mm, Depth: 265 mm, Height: 33 mm

Initial Release Date: 19/12/2017

Product Specification

Cisco 6851 IP phone Black Wired handset 4 lines Wi-Fi Specifications

Manu. Code
Weight (approx)
Product TypeTelephones
Technical details
Collection Model
Cisco 6851
Product colour
Backlight colourWhite
Compliance industry standardsTIA 810\nTIA 920\nIEEE 802.3 Ethernet, IEEE 802.3af (for CP-6851 only)
Display Resolution396 x 162 pixels
Display diagonal8.89 cm (3.5")
Display number of coloursMonochrome
Phone features
Lines quantity
4 lines
Call parkY
Anonymous callY
Anonymous call rejectionY
Call historyY
Ethernet LANY
DHCP clientY
Ethernet LAN interface typeGigabit Ethernet
Ethernet LAN data rates10,100,1000 Mbit/s
Wi-Fi standards802.11a,802.11b,802.11g,Wi-Fi 4 (802.11n)
Full duplexY
Ports & interfaces
Ethernet LAN (RJ-45) ports
RJ-9 ports quantity1
Call management
Do not disturb function
Speed diallingY
Microphone mute
Weight & dimensions
265 mm
Height33 mm
Weight615 g
Width207 mm
Supported network protocols
Built-in camera
Management features
Quality of Service (QoS) support
Speed dialing
Distinctive ringY
Call forwarding
Call transferY
Handset typeWired handset
Wireless technologyBluetooth
Call waitingY
Call holdY
Expansion module supportY
Backlight displayY
Operational conditions
Storage temperature (T-T)
-10 - 60 C
Operating temperature (T-T)0 - 40 C
Storage relative humidity (H-H)10 - 95%
Operating relative humidity (H-H)10 - 90%
Technical details
Caller ID
Power over Ethernet (PoE)
Power over Ethernet (PoE)
Packaging content
Number of handles included
1 pc(s)
Returns & Exchanges

21 Days Return Policy

We want you to be delighted every time you shop with us. Occasionally though, we understand that you may wish to return items.

Items can be returned direct to us within 21 days from the day of dispatch for a refund or exchange.

To qualify for this, the product must not have been worn, and be in brand new condition. You must return all the original packaging, instructions, guarantee and any extras.

All technology / electrical items including but not restricted to TVs, laptops, tablets etc must be still in their original packaging with the manufacturer seals still in tact. We are unable to accept returns for products which have been opened and/or used.
Product Questions

Questions and Answers

What size is the screen/display for this product?
The CP-6851-3PCC-K9= has has a diagonal display of 8.89 cm (3.5").

Does this product support bluetooth?
Yes, This product is bluetooth enabled and can be connected to compatible bluetooth devices to enable hands free use.
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Cisco 6851 IP phone Black Wired handset 4 lines Wi-Fi Reviews

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