Cisco 7821 IP Phones

Cost effective, ergonomic, efficient

Get easy-to-use, highly secure, and highly cost-effective voice communications for small to large businesses.

Features and capabilities

  • Two-lines deliver more efficient call handling
  • High-resolution graphical grayscale display makes viewing easier
  • Dedicated fixed keys ease communications for increased productivity
  • Built-in speakerphone supports hands-free communications
  • Wideband audio enhances clarity with the handset, speaker, or a headset

View data sheet in PDF format

VoIP Phone Cisco 7821

Phone overview

Building on 7821 is a two-line endpoint for knowledge workers and managers, on-premises or remote, who have light to moderate voice communications needs. Contact center agents that support small call-queue environments could also have interest. It comes with two dedicated programmable line and feature keys, a 3.5-inch (89-mm) backlit display, and support for third-party headsets. Wideband audio comes standard on the handset, headset, and speakerphone. The 7821 comes in both charcoal and white colors.


  • Affordable voice communications solution with cost-effective, feature-rich models that can be deployed on third-party hosted call-control infrastructures
  • Superior audio experience on select models with full wideband audio support (handset, headset, and speaker) for crystal-clear audio performance
  • Energy efficiency and eco-friendliness with low power consumption and recyclable plastics in the hardware design; Cisco EnergyWise technology over the network delivers energy savings in off-hours
  • Ease of use with backlit displays to enhance viewing and navigation, headset and speakerphone support on most models for added flexibility, and ergonomically rounded keys for superior tactile experience.

Brief specifications

Attribute Specification
Screen 384 x 106 pixel (3.28 in. / 83.3 mm)
Ethernet switch 10/100
Programmable line keys 2
Full duplex speakerphone Yes (wideband)
Wideband audio Standard
PoE class 1
Replaceable bezel Silver as option

Hardware features

Features Benefits

Ergonomic design

●  The phone offers an easy-to-use interface and provides a traditional telephony-like user experience.

Graphical display

●  White backlit, greyscale, 3.5” 396×162 pixel-based display on the IP Phone 7821
●  Provide scrollable access to calling features and text-based XML applications.


●  The handset is a standard wideband-capable audio handset (connects through an RJ-9 port) for the IP Phone 7821
●  The handset is hearing aid-compatible (HAC) and meets Federal Communications Commission (FCC) loudness requirements for the Americans with Disabilities Act (ADA). You can achieve Section 508 loudness requirements by using industry-standard inline handset amplifiers such as Walker Equipment W-10 or CE-100 amplifiers. The dial pad is also ADA-compliant.


●  The analog headset jack is a standard wideband-capable RJ-9 audio port for the IP Phone 7821

Backlit Indicator

The phone supports backlit indicators for the audio path keys (handset, headset and speakerphone), select key, line keys, and message waiting.

Volume control

●  A volume-control toggle provides easy decibel-level adjustments of the handset, monitor speaker, and ringer.

Full duplex speakerphone

●  Full-duplex speakerphone allows gives you flexibility in placing and receiving calls. For added security, the audible dual tone multifrequency (DTMF) tones are masked when the speakerphone mode is used.


●  The IP Phone 7821 includes a default black bezel (replaceable), and an optional silver bezel is also available separately.

Dual-position foot stand

●  The display is easy to view and the buttons and keys are easy to use. The two-position foot stand supports viewing angles of 30 degrees and 45 degrees; you can remove the foot stand for wall mounting, with mounting holes located on the base of the phone.


●  The phone can be installed on a wall using optional wall-mount kit (available separately).

Electronic hook switch

●  The hookswitch can be controlled electronically with a third party headset connected to the auxiliary port for the IP Phone 7821


The phone has the following keys
●    Line keys
●    Soft-keys
●    Two-way navigation and select keys
●    Hold/Resume, Transfer and Conference keys
●    Messaging, Service and Directory keys
●   Standard key pads
●    Volume control toggle key
●    Speakerphone, headset and mute keys

Ethernet cables

The IP Phone 7821
●    Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
●    Category 5/5e/6 for 100-Mbps cables with 4 pairs

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