Hardware Features

• 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, 7841 and 7861.
  • Non-backlit, greyscale, 3.28” 384×106 pixel-based display on the IP Phone 7811.
  • Provide scrollable access to calling features and text-based XML applications.
• Handset
  • The handset is a standard wideband-capable audio handset (connects through an RJ-9 port) for the IP Phone
    7821, 7841 and 7861.
  • The default handset is a standard narrowband-capable audio handset (connects through an RJ-9 port) for the IP
    Phone 7811, and wideband on handset is available with purchase of additional wideband handset.
  • 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 narrowband handset (for the IP Phone 7811) produces a magnetic field that attracts small metallic objects
    such as pins and staples. To avoid possible injuries do not keep small metallic objects close to the handset.
• Headset
  • 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.
  • Headset key is not available on the IP Phone 7811.
• 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.
• Bezel
  
  • The IP Phone 7821, 7841 and 7861 include a default black bezel (replaceable), and an optional silver bezel is
    also available separately.
  • The IP Phone 7811 is available with a black bezel
• 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. (IP Phone 7821, 7841 and 7861)
  • Only 1 foot-stand position (45 degrees) is supported on the IP Phone 7811.
• Wall-mountable
  • 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, 7841, and 7861.
• Keys - 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 (Headset key is not available on the IP Phone 7811)
• Ethernet cables
  • The IP Phone 7811, 7821, 7841, and 7861
    ◦ Category 3/5/5e/6 for 10-Mbps cables with 4 pairs
    ◦ Category 5/5e/6 for 100-Mbps cables with 4 pairs
• The IP Phone 7841
  ◦ Category 5/5e/6 for 1000-Mbps cables with 4 pairs

Power Features

• IEEE PoE class 1
  • The phone supports IEEE 802.3af PoE (Class 1); power consumption does not exceed 3.84 watts.
• Cisco power cube 3
  • This power cube is used as a standard Cisco IP Phone Power Supply for non-PoE deployments.
• Cisco power injector
  • The IP Phone 7811, 7821 and 7861 are compatible with Cisco Unified IP Phone Power Injector (CP-PWR-INJ), and 7841 is compatible with Cisco Aironet Power Injector (AIR-PWRINJ5=)

Call-Control Support

• Cisco Unified Communications Manager
  
  • 8.5.1
  • 8.6.2
  • 9.1.2
  • 10.x and later
• Cisco Business Edition 6000
  
  • 8.6.2
  • 9.1.2
  • 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

Phone Features

• Signaling protocol support
  • Session Initiation Protocol (SIP)
• Codec support
  • G.711a/μ, G.722, G.729a, iLBC
• Key call features support
  • + Dialing (E.164)
  • Abbreviated dial
  • Adjustable ringing and volume levels
  • Adjustable display contrast
  • Agent greeting
  • Auto-answer
  • Auto-detection of headset (Not available on the IP Phone 7811)
  • Busy Lamp Field (BLF) (Not available on the IP Phone 7811)
  • Call back
  • Call forward
  • Call history
  • Call park
  • Call Pickup
  • Call timer
  • Call waiting
  • Caller ID
  • cBarge
  • Corporate directory
  • Conference
    Cross Cluster Extension Mobility (EMCC)
  • Dial from the list
  • Direct transfer
  • Do not disturb
  • Extension Mobility (EM)
  • Forced access codes and client matter codes
  • Group call pickup
  • Hold/resume
  • Immediate divert
  • Intercom (Not available on the IP Phone 7811)
  • Join (Not available on the IP Phone 7811)
  • Message-waiting indicator
  • Meet me conference
  • Mobility
  • Music on hold
  • Mute
  • Network profiles (automatic)
  • On- and off-network distinctive ringing
  • Personal directory
  • Privacy
  • Private Line Automated Ringdown (PLAR)
  • Redial
  • Ring tone per line appearance
  • Shared line
  • Silent monitoring and recording
  • Speed dial
  • Time and date display
  • Transfer
  • Voicemail
  • Whisper coaching
• Language support
  • Arabic (Arabic Area)
  • Bulgarian (Bulgaria)
  • Catalan (Spain)
  • Chinese (China)
  • Chinese (Hong Kong)
  • Chinese (Taiwan)
  • Croatian (Croatia)
  • Czech (Czech Republic)
  • Danish (Denmark)
  • Dutch (Netherlands)
  • English (United Kingdom)
  • Estonian (Estonia)
  • French (France)
  • Finnish (Finland)
  • German (Germany)
  • Greek (Greece)
  • Hebrew (Israel)
  • Hungarian (Hungary)
  • Italian (Italy)
  • Japanese (Japan)
  • Latvian (Latvia)
  • Lithuanian (Lithuania)
  • Korean (Korea Republic)
  • Norwegian (Norway)
  • Polish (Poland)
  • Portuguese (Portugal)
  • Portuguese (Brazil)
  • Romanian (Romania)
  • Russian (Russian Federation)
  • Spanish (Columbia)
  • Spanish (Spain)
  • Slovak (Slovakia)
  • Swedish (Sweden)
  • Serbian (Republic of Serbia)
  • Serbian (Republic of Montenegro)
  • Slovenian (Slovenia)
  • Thai (Thailand)
  • Turkish (Turkey)
• Multiple ring tones
  • The phone supports user-adjustable ring tones.
• Directories
  • The phone identifies incoming messages and categorizes them for users on the screen. This makes it fast and
    easy to return calls using direct dial-back capability. The corporate directory integrates with the Lightweight
    Directory Access Protocol (LDAP) standard directory
• Quality-of-service (QoS) options
  
  • The phone supports CDP and 802.1Q/p standards, and can be configured with an 801.1Q VLAN header
    containing the VLAN ID overrides configured by the Admin VLAN ID.
• Security
  • Certificates
  • Image authentication
  • Device authentication
  • File authentication
  • Signaling authentication
  • Media encryption using Secure Real-Time Transfer Protocol (SRTP) using AES-128
  • Signaling encryption using Transport Layer Security (TLS) Protocol using AES-128 or AES-256
  • Encrypted configuration files
  • 802.1X authentication
  • Cryptography
• Configuration options
  • The user can configure IP address assignment statically or through the DHCP client.
• Physical dimensions (H×W×D)
  • IP Phone 7811: 207 x 195 x 33mm (exclude foot stand)
  • IP Phone 7821: 207 x 206 x 28mm (exclude foot stand)
  • IP Phone 7841: 207 x 206 x 28mm (exclude foot stand)
  • IP Phone 7861: 207 x 265 x 28mm (exclude foot stand)
• Weight
  • IP Phone 7811: 806g
  • IP Phone 7821: 867g
  • IP Phone 7841: 868g
  • IP Phone 7861: 1053g
• Display
  • IP Phone 7821, 7841, 7861: 3.5” 396×162 pixels
  • IP Phone 7811: 3.28” 384×106 pixels
• Ethernet switch
  • The phone has a 10/100BASE-T (The Cisco®
    IP Phone 7811, 7821 & 7861) or a10/100/1000BASE-T
    (The Cisco®
  • IP Phone 7841) Ethernet connection through two RJ-45 ports, one for the LAN connection and the
    other for a downstream Ethernet device connection like a PC.
• Phone casing composition
  • Polycarbonate acrylonitrile butadiene styrene (ABS) textured plastic
• Power requirements
  • The phone is an interoperable IEEE 802.3af PoE (Class 1 device); 48 VDC is required; it can be supplied
    locally at the desktop using an optional AC-to-DC power supply (CP-PWR-CUBE-3=). Use of the power supply
    also requires the use of one of the corresponding AC country cords.
• Operational temperature
  • 32 to 104°F (0 to 40°C)
• Nonoperational temperature shock
  • 14 to 140°F (-10 to 60°C)
• Humidity
  • Operating 10% to 90%, non-condensing
  • Non-operating 10% to 95%, non-condensing
• Cosmetic
  • Cisco cosmetic class A