Cisco 6851 IP phone Black 4 lines Wi-Fi

Cisco 6851 IP phone Black 4 lines Wi-Fi

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£103.51

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Listed since 13 June 2026

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Description

The Cisco® IP Phone 6800 Series with Multiplatform Phone (MPP) Firmware is a cost-effective. high-fidelity voice communications portfolio designed to improve your organization’s 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. An affordable way to purchase hardware Cisco Webex Hardware as a Service provides a new way to purchase hardware with a simple. scalable and flexible way to pay. Stay up to date with the latest models of IP Phones and Webex Devices to enhance collaboration and create workspaces for the future. And get ready for all the power of Cisco's unified cloud platform! Learn more about Webex Hardware as a Service and the devices available. 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.

Full specifications

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Why choose the Cisco 6851 IP phone Black 4 lines Wi-Fi in 2026?

The Cisco 6851 IP phone Black 4 lines Wi-Fi meets the expectations of buyers who want a quality product without paying over the odds. Thanks to our comparison tool, find the best offer among all partner retailers listed on Compiral. The trust rating shown for each retailer helps you choose a reliable shop with clear return conditions and responsive customer service. If you are unsure, also check the Cisco 8841 IP phone Black. Silver from the same brand. A good price comparison can save you between 10% and 30% on your purchase depending on the time of year and available retailers.

Technical analysis of the Cisco 6851 IP phone Black 4 lines Wi-Fi

Among the main strengths of the Cisco 6851 IP phone Black 4 lines Wi-Fi, the most notable are its competitive pricing from £103.51 and the recognition of the Cisco brand. Buyers who have already used this type of product in the Smartphones & Téléphonie category generally highlight the effectiveness of the core functions and ease of maintenance. It is a product that suits both first-time buyers and those replacing existing equipment, with a short learning curve and stable performance over time.

What the tech specs reveal

The Cisco 6851 IP phone Black 4 lines Wi-Fi spec sheet details the specifications that make a difference in daily use. For a savvy buyer, this data allows objective comparison with other products in the Smartphones & Téléphonie category. Cisco publishes precise specifications that make comparison easier and help you make an informed purchase decision. Consult the technical specifications table on this page for full details. The Cisco 8841 IP phone Black. Silver from the same brand may also interest you for a direct comparison.

In practice day to day

In daily use, the Cisco 6851 IP phone Black 4 lines Wi-Fi is designed to fit easily into the regular habits of Smartphones & Téléphonie users. Cisco has optimised this model for regular use, with accessible features and simplified maintenance.

Market price ranges in 2026

RangeIndicative price
Entry-levelUnder 980 £
Mid-range980 £ to 2290 £
High-endOver 2290 £

Before buying the Cisco 6851 IP phone Black 4 lines Wi-Fi, remember to check the total price including delivery costs. On Compiral, sorting by total price lets you immediately identify the best offer among all listed retailers. Comparing return conditions and the warranty period offered by each retailer is also a good habit before finalising your order in the Smartphones & Téléphonie category.

Frequently asked questions about Cisco 6851 IP phone Black 4 lines Wi-Fi

Is the Cisco 6851 IP phone Black 4 lines Wi-Fi in stock?

Stock availability for the Cisco 6851 IP phone Black 4 lines Wi-Fi is updated in real time on Compiral. Retailers showing "In stock" can usually deliver quickly, often within 2 to 5 working days. If the product is temporarily out of stock at one retailer, check the other offers in our table. Check back regularly as stock levels change frequently in the Smartphones & Téléphonie category.

Where can I buy the Cisco 6851 IP phone Black 4 lines Wi-Fi at the best price?

To buy the Cisco 6851 IP phone Black 4 lines Wi-Fi at the best price, compare all available offers in our table at the top of this page. The 2 offers listed include delivery costs to give you the true total cost. Sort by ascending price and filter by free delivery to quickly identify the best deal among our verified partner retailers.

How does the Cisco 6851 IP phone Black 4 lines Wi-Fi compare to competitors in the Smartphones & Téléphonie category?

In the Smartphones & Téléphonie category, the Cisco 6851 IP phone Black 4 lines Wi-Fi occupies a specific market segment. Compared to other available models, it stands out mainly through the balance between its features and its price. To compare objectively, consult the detailed spec sheet on this page and compare specifications with other similar products listed on our comparison tool.

Is the Cisco 6851 IP phone Black 4 lines Wi-Fi suitable for beginners?

Yes, the Cisco 6851 IP phone Black 4 lines Wi-Fi is generally appreciated by both beginners and regular users of the Smartphones & Téléphonie category. It is quick to set up and Cisco usually provides clear documentation. If you are new to this product category, consult the spec sheet on this page to identify the key criteria to check before making your choice.

Is there a refurbished version of the Cisco 6851 IP phone Black 4 lines Wi-Fi?

Refurbished versions of the Cisco 6851 IP phone Black 4 lines Wi-Fi may be available from certain Compiral partner retailers. These refurbished products allow you to save between 20% and 40% compared to the new price while still benefiting from a warranty. Check availability in our offers table and review the warranty conditions offered by the retailer.

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