Cisco IP Phone 7821, Black

MX80821 IP Phone 7821, Black
MX80821 IP Phone 7821, Black MX80821 IP Phone 7821, Black MX80821 IP Phone 7821, Black

Product Info

Cost-Effective, Simple Voice Collaboration

Get easy-to-use, highly secure, and highly cost-effective voice communications for small to large businesses. The 7821 is supported on Cisco on-premises, hosted, Webex Calling and third-party call control offer flexible deployment options*.


Meet the needs of both information workers and managers who have occasional-to-light voice communications requirements with the Cisco IP Phone 7821.

Key features and capabilities, which enhance user experience and IT administration include:

User Experience Enhancing Collaboration

  • 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

Simple, Cost-Effective Administration

Key features to ease and reduce costs of administration include:

  • Flexible deployment options with Cisco on-premises, hosted, and Webex Calling.***
  • Cisco Expressway supports remote worker single sign-on access without a VPN client
  • Power over Ethernet (PoE) Class 1 and Cisco EnergyWise lowers energy costs
  • Integrated IEEE 10/100 switch reduces installation costs and footprint at the desk
  • Cisco Webex Phone OS consolidates administration with common software to both the IP Phone 7800 Series and IP Phone 8800 Series

*Includes messaging, directory, speaker, and a two-way navigation button
**Telephony features may vary by vendor platform. Contact your Cisco representative for supported platforms.


The Cisco IP Phone 7821 require a Basic User Connect License (UCL) in order to connect to Cisco Unified Communications Manager.


Device Type IP Phone
Graphical display White backlit, greyscale, 3.5” 396×162 pixel-based display
Handset Standard wideband-capable audio handset
Standard wideband-capable RJ-9 audio port
- 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.
Backlit Indicator Audio path keys (handset, headset and speakerphone), select key, line keys, and message waiting.
Volume control Yes
Full duplex speakerphone Yes
Foot stand Dual-position foot stand (30° & 45°)
Removeable for wall mounting
Wall-mountable Yes, using optional wall-mount kit (sold seperately)
Electronic hook switch Yes
Keys Line 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 Port 10/100BASE-T, 1 x RJ-45
Ethernet cable Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
Category 5/5e/6 for 100-Mbps cables with 4 pairs
PoE IEEE 802.3af PoE (Class 1)
Power consumption does not exceed 3.84 watts.
AC Power Adapter Sold Seperately
Cisco power cube 3 (CP-PWR-CUBE-3=) and Cisco power adapter 3 (CP-PWR-ADPT-3) are used as standard Cisco IP Phone Power Supplies for non-PoE deployments.
Power injector Sold Seperately
Compatible with Cisco Unified IP Phone Power Injector (CP-PWR-INJ)
Cisco Unified Communications Manager 8.5.1
10.x and later
Cisco Business Edition 6000 8.6.2
10.x and later
Cisco Hosted Collaboration Solution 8.6.2 and later (using supported UCM versions above)
Cisco Unified Survivable Remote Site Telephony 8.x and later
Colour Black
Dimensions 207 x 206 x 28mm (exclude foot stand)
Weight 867g