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      • The Cisco 6821 marks the entry-level device in the 6800 series. Combining an attractive, ergonomic design with 'always-on' reliability and secure encrypted communications, the 6821 is an easy to use desk phone with multiplatform support for third-party hosted deployments.
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  2. The Cisco IP Phone 6821 Multiplatform Phones presents many features on the softkeys instead of hard keys. Your phone must be connected to a network and configured to connect to a call control system. The phones support many functions and features, depending on the call control system.

  3. Use the line and feature buttons to view calls on a line, access features such as Speed Dial, and to perform tasks such as resuming a held call. Buttons illuminate to indicate status: Green, steady: Line is idle. Red, steady: Line in use. Red, flashing: Incoming or held call. Amber, steady: Line is unregistered.

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  4. The Cisco IP Phone 6800 Series with Multiplatform Firmware delivers affordable VoIP on-premises, from Cisco Webex Calling, and on Cisco- approved UCaaS platforms.

    • What is Cisco IP phone 6821 multiplatform phone?1
    • What is Cisco IP phone 6821 multiplatform phone?2
    • What is Cisco IP phone 6821 multiplatform phone?3
    • What is Cisco IP phone 6821 multiplatform phone?4
    • What is Cisco IP phone 6821 multiplatform phone?5
  5. View and Download Cisco 6821 instructions online. 6821 ip phone pdf manual download.

    • We've assessed three of Cisco's most popular VoIP ranges
    • Cisco VoIP Phone 6800, 7800 and 8800 series: our overall verdict

    Reviews

    By Barclay Ballard

    published 16 January 2022

    (Image: © Cisco)

    When looking at the sheer number of different VoIP handsets available across the 6800, 7800, and 8800 ranges, it’s understandable if businesses feel a little overwhelmed. 

    However, as long as managers and IT leaders have a clear idea of the kind of telephony features they need, there’s certain to be a Cisco phone that fits the bill. The unparalleled range and flexibility provided by these handsets are what makes them such great all-rounders within the VoIP handset space. 

    •Want to compare Cisco to its rivals? Check out our guide to the best VoIP handsets available

    Cisco IP Phones: Price Comparison

    $18

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    • Cisco
    • Barclay Ballard
  6. Combining an attractive, ergonomic design with 'always-on' reliability and secure encrypted communications, the 6821 is an easy to use desk phone with multiplatform support for third-party hosted deployments.

  7. The Cisco IP Phone 6800 Series provides four phone models (and an optional Key Expansion Module) to the Cisco Multiplatform Phone (MPP) portfolio (Figure 1): Cisco IP Phone 6821 with Multiplatform Firmware, supporting two SIP registrations

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