Cisco CP-8821-K9-BUN Telephony Equipment
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Why CP-8821-K9-BUN Cisco Unified 8800 Series New is the best?

Availability: In Stock
Part Number#: CP-8821-K9-BUN
List Price was: $677.60
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Short Description:
CP-8821-K9-BUN Unified 8800 Series Wireless IP Phone World Mode With Battery Power Adapter | Made by Cisco | New Factory Sealed

Interface Types of This Product: Telephony IP Phone

Product Condition:
New Retail Factory Sealed
Warranty provided by ALLHDD.COM:
90 Days
We are giving specifications below, why one should consider procuring Cisco IP Phone Telephony Networking features, a general overview, description, performance specification, relevant images, a competitive price infographic, and technical information about the CP-8821-K9-BUN model with compatibility.

More Information

The CP-8821-K9-BUN Cisco Unified 8800 Series Wireless IP Phone is a business-class wireless IP phone that provides a wide range of features for enhanced productivity and collaboration. It is designed for use in enterprise environments and is compatible with Cisco Unified Communications Manager and Cisco Unified Communications Manager Express.

This phone includes support for wireless 802.11a/b/g/n and Bluetooth, enabling users to move freely throughout the office while maintaining connectivity to the telephone system. It also features a high-resolution color display, an intuitive user interface, and a built-in speakerphone.

The phone also includes a range of advanced features such as support for wideband audio, which improves the clarity of speech and reduces background noise. It also includes support for Cisco's EnergyWise technology, which helps to reduce energy consumption and lower costs. Additionally, the phone supports Cisco's Intelligent Proximity feature, which enables integration with mobile devices such as smartphones, enabling users to easily transfer calls between devices.

In terms of security, the phone supports Cisco's TrustSec feature which provides secure communication and helps to protect against unauthorized access. It also supports Cisco's Secure Boot feature, which verifies that the firmware loaded on the device is authentic and has not been tampered with.

High Performance

The CP-8821-K9-BUN Cisco Unified 8800 Series Wireless IP Phone is designed to provide high performance. It is equipped with a high-resolution color display, a full-duplex speakerphone, and a built-in headset port to provide a high-quality user experience. The phone also supports advanced call handling features such as call transfer, conferencing, and voicemail, as well as Cisco's unified communications and collaboration features. Additionally, the phone supports wireless connectivity through Wi-Fi or DECT, allowing users to move freely around the office while remaining connected. The phone also supports Power over Ethernet (PoE) to make deployment and power management simple and easy.

Resiliency and High Availability of IP Phone

The CP-8821-K9-BUN Cisco Unified 8800 Series Wireless IP Phone is designed for resiliency and high availability. It includes features such as dual-band 802.11a/b/g/n/ac wireless support and Cisco Wireless Infrastructure to ensure stable and consistent wireless connectivity. Additionally, the phone supports advanced call processing features such as SRST (Survivable Remote Site Telephony) and Cisco Unified Communications Manager Express to ensure that calls can be made and received even in the event of a WAN failure. The phone also supports redundant power supply options and the ability to be powered over Ethernet (PoE) to provide an additional level of resiliency.

General Information about this Cisco CP-8821-K9-BUN

  • Manufacturer: Cisco
  • Model Number or SKU# CP-8821-K9-BUN
  • Product Series 8800
  • Product Model 8821
  • Product Name Wireless IP Phone 8821 World mode
  • Product Type Handset

Technical Information for Cisco 8821 Model IP Phone

Interfaces/Ports 8800 Series Wireless IP Phone

  • USB Yes
  • Headphone Yes

Features Intercom

  • Features Key Lock
  • Features Call Forwarding
  • Features Call Park
  • Features Call Waiting
  • Features Silent Mode
  • Features Voice Mail
  • Features Time & Date Stamping
  • Features Mute
  • Features Caller ID
  • Features Call Timer
  • Features Volume Control
  • Features Rechargeable Battery
  • Features (BLF) Busy Lamp Field
  • Features Music on Hold
  • Features Call Pick-up
  • Features Push-to-talk
  • Features Rugged
  • Features Call Transfer
  • Features Redial
  • Features Speed Dial
  • Features Speakerphone
  • Features Hold
  • Features Conference Call
  • Features Auto-answer
  • Features Vibrator
  • Features Message Waiting

Network and Communication

  • Frequency Range 2.41 GHz to 5.83 GHz

Display & Graphics

  • Screen Size 2.4 inch
  • Screen Type Color LCD
  • Screen Resolution 240 x 320


  • Buttons & Keys Speaker
  • Buttons & Keys Soft Key
  • Buttons & Keys On/Off
  • Buttons & Keys Navigation Key
  • Buttons & Keys Numeric Keypad
  • Buttons & Keys Volume Control
  • Buttons & Keys Mute Button


  • Cisco Unified Communications Manager: 9.1(2), 10.5(2), 11.0(1), and later
  • Cisco Unified Survivable Remote Site Telephony (SRST): 10.x, 11.x, and later
  • Cisco Unified Communications Manager Express: 10.x, 11.x, and later
  • Cisco Hosted Collaboration Solution (HCS): 9.x, 10.x, 11.x, and later

Dimension and Weight

  • Height 5.2 inch
  • Width 2.2 inch
  • Depth 0.7 inch
  • Weight (Approximate) 1 LBS

Telephony technology deals with the interaction between two or parties that are physically distant. The interaction often involves electronic voice communication, videoconferencing, text messages, and faxing. Telephony has now evolved into the internet sphere, allowing users to communicate via IP (Internet Protocol) networks. This is done at lower costs than the traditional telephonic systems. IP telephonic systems can be found on a host of computing devices such as PCs, desktop computers, smartphones, and tablets.

Users need to invest in reliable, scalable, and robust telephony equipment to help meet enterprise needs. Every business needs to constantly communicate with employees, suppliers, and customers for improved business performance. There are a series of smart features of available telephony equipment that users can benefit from. These include real-time telephone calls, video conferencing, privacy protection, faxing, instant messaging, and more.

These high-end technologies are ideal for several organizations that require an improved approach to their telephony networking. That way, they can be sure of maximizing business mobility and continuity.

Several types of office phone systems are available to be employed by users. These phone systems run on different technology platforms. They can make use of VoIP, PBX, or analog. A user's telephone system choice will depend on the extensions, business applications, wiring, and budget. There are three major types that users can choose from, and they include KSU, PBX, and VoIP.

KSU (Key System Unit)

The Key System Unit is a multi-line telephony system that performs under a central control device. Present key system units now offer users with advanced features for businesses with up to 75 employees. These types of systems are often known as a hybrid telephone system. They incorporate the features of both key and PBX systems, offering improved efficiency. A great advantage of key systems is that the users can expand them as the business expands, and more employees are available.

PBX (Private Branch Exchange)

Larger businesses employ these types of telephony systems. They can accommodate well over 75 employees, and they have several advanced features standard on them. These systems offer increased flexibility, which allows them to be used for complex operations in business environments. Their flexibility and customizable features ensure that they offer good value for money.

VoIP (Voice over IP)

This type is the latest telephonic system that allows businesses to connect in different locations. These locations can be within a locale or other places in the world. VoIP telephony equipment works by sending voice calls via the internet without the need for traditional telephones.

VoIP technology enables businesses to communicate with remote workers and branch offices. That is, users can place and receive calls anywhere in the world with the same number. The traditional VoIP technology allows companies to own and manage the telephony equipment themselves. On the other hand, the hosted VoIP system is controlled by a service provider.

Cloud-based telephony equipment manages and maintains a company's communication, relieving the IT department of such duties. That way, it frees up time and allows employees to focus on other important tasks.

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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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Shipping Options and Estimated Delivery Time

UPS Shipping Options:

FREE UPS® Ground (Free shipping to all orders for 48 states!)
Estimated delivery time: 4-7 business days

UPS 3 Day Select®
Estimated delivery time: 3 business days

UPS 2nd Day Air®
Estimated delivery time: 1-2 business days, Delivery by 10:30 AM or 2:00 PM

UPS Next Day Air® Standard Overnight
Estimated delivery time: Overnight 2-5 PM, Standard Overnight Delivery.

UPS Next Day Air® - Priority Overnight
Estimated delivery time: Overnight Delivery (Next Business Day) Delivery by 10:30 AM or 12:00 PM

UPS Next Day Air® First Overnight - Early A.M
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UPS® First Overnight - Saturday
Estimated delivery time: Overnight 8:30 AM – Saturday

FedEx Shipping Options:

FedEx Ground®
Estimated delivery time: (4–7 business days in the contiguous 48 states)
*For residential delivery via FedEx Ground use FedEx Home Delivery®
Estimated delivery time: 4−7 business days, based on the distance to the destination.

FedEx Express Saver®
Estimated delivery time: 3 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states (except Hawaii and Alaska)

FedEx 2Day®
Estimated delivery time: 2 business days (by 4:30 PM to U.S. businesses; by 8:00 PM to residences)
Available throughout all 50 states

FedEx Standard Overnight®
Estimated delivery time: Next-business-day (by 4:30 PM to U.S. businesses and by 8:00 PM to residences)
Available throughout all 50 states (Hawaii is outbound only)

FedEx Priority Overnight®
Estimated delivery time: Next-business-day (by 10:30 PM to U.S. businesses, noon to most residences)
Available throughout all 50 states

FedEx First Overnight®
Estimated delivery time: Next-business-day (by 8:30 or 9 AM to most areas)
Available throughout all 50 states

Worldwide Shipping Options:

UPS®/FedEx® International Economy

Estimated delivery time: 4-7 business days

UPS®/FedEx® International Priority

Estimated delivery time: 2-4 business days

UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

  • The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
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