Cisco IP Phone 7800 Series

Cisco IP Phone 7800 Series Data Sheet

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The Cisco® IP Phone 7800 Series is a cost-effective, high-fidelity voice communications portfolio designed to improve your organization’s people-centric communications, while reducing your operating costs.

It combines an attractive new ergonomic design with “always-on” reliability and secure encrypted communications. The Cisco® IP Phone 7800 Series delivers advanced IP Telephony features and crystal clear wideband audio performance to deliver an easy-to-use, full-featured voice communications experience.

The Cisco® IP Phone 7800 Series introduces three models to the Cisco IP Phone portfolio. From left-to-right (Figure 1), they are:

The IP Phone 7821 supporting two lines

The IP Phone 7841 supporting four lines

The IP Phone 7861 supporting sixteen lines

Figure 1. Cisco IP Phone 7800 Series

The line keys on each model are fully programmable. You can set up keys to support either lines, such as directory numbers, or call features like speed dialing. You can also boost productivity by handling multiple calls for each directory number, using the multi-call per-line appearance feature. Tri-color LEDs on the line keys support this feature and make the phone simpler and easy to use.

Fixed function keys on all models give you one-touch access to service, messaging, directory, hold/resume, transfer, and conference features. A full-duplex speakerphone lets you set up clear multi-party conferences for flexible, productive collaboration.

The Cisco® IP Phone 7800 Series sets a new standard in usability and delivers a context-sensitive user experience. It features a high resolution 3.5” (396x162) greyscale display, with white backlighting for easy reading. Localized language support, including right-to-left onscreen text, meets the needs of global users.

The Cisco® IP Phone 7800 Series is also more energy-efficient and eco-friendly, to support your green initiatives. Each phone supports Power-over-Ethernet (PoE) Class 1 and Cisco’s EnergyWise™, and is Energy Star certified. A standard power-save option reduces power consumption during off-hours, to save money and maximize energy efficiency.

The IP Phone 7800 Series portfolio is ideal for any mid-sized to large enterprise company that wants to update its phone system from a traditional analog or digital-based system to an IP Communications system. It’s also an excellent choice if you’re seeking to expand your voice communicatons support with your current Cisco Unified Communications solution.

Features and Benefits

Table 1 lists features and benefits of the Cisco® IP Phone 7800 Series

Table 1. Features and Benefits



Hardware Features

Ergonomic design

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

Graphical display

White backlit, greycale, 396×162 pixel-based display (3.5”) provides scrollable access to calling features and text-based XML applications.

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.

Replaceable bezel

Phone includes a black bezel. 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.


The phone has the following 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

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.

Call-Control Support

Cisco Unified Communications Manager

10.x and later

Cisco Business Edition 6000

10.x and later

Cisco Hosted Collaboration Solution

10.x and later


The Cisco® IP Phone 7821 requires a Basic User Connect License (UCL) in order to connect to Cisco Unified Communications Manager. The Cisco® IP Phone 7841 and 7861 require an Enhanced User Connect License (UCL) in order to connect to Cisco Unified Communications Manager.

Product Specifications

Table 2 lists the features and specifications of The Cisco® IP Phone 7800 Series.

Table 2. Features and Specifications



Signaling protocol support

Session Initiation Protocol (SIP)

Codec support

G.711a/μ, G.722, G.729a, iLBC

Key call features support

+ Dialing (E.164)
Adjustable ringing and volume levels
Adjustable display contrast
Auto-detection of headset
Call forward
Call history
Call timer
Call waiting
Caller ID
Corporate directory
Dial from the list
Direct transfer
Do not disturb
Immediate divert
Message-waiting indicator
Music on hold
Network profiles (automatic)
On- and off-network distinctive ringing
Personal directory
Ring tone per line appearance
Shared line
Silent monitoring and recording
Speed dial
Time and date display

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


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


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

Configuration options

The user can configure IP address assignment statically or through the DHCP client

Physical dimensions (H×W×D)

CP-7821: 207 x 206 x 28mm (exclude foot stand)
CP-7841: 207 x 206 x 28mm (exclude foot stand)
CP-7861: 207 x 265 x 28mm (exclude foot stand)


CP-7821: 867g
CP-7841: 868g
CP-7861: 1053g


3.5” 396×162 pixels

Ethernet switch

The phone has a 10/100BASE-T (The Cisco ® IP Phone 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)


Operating 10% to 90%, non-condensing
Non-operating 10% to 95%, non-condensing


Cisco cosmetic class A

Certification and compliance

Regulatory Compliance

CE Markings per directives 2004/108/EC and 2006/95/EC


UL 60950 Second Edition

CAN/CSA-C22.2 No. 60950 Second Edition

EN 60950 Second Edition (including A11 & A12)

IEC 60950 Second Edition (including A11 & A12)

AS/NZS 60950


EMC - Emissions

47CFR Part 15 (CFR 47) Class B


CISPR22: 2005 w/Amendment 1: 2005 Class B

EN55022: 2006 w/Amendment 1: 2007 Class B

ICES003 Class B

VCCI Class B



KN22 Class B

EMC - Immunity





Armadillo Light


FCC Part 68 HAC




NZ PTC 220

Industry Standards: TIA 810 and TIA 920

Industry Standards: IEEE 802.3 Ethernet, IEEE 802.3af and 802.3at

Product Specifications

Table 3 gives ordering information for the phone and its accessories.

Table 3. Ordering Information

Product Number



Cisco IP Phone 7821


Cisco IP Phone 7841


Cisco IP Phone 7861


Spare Handset for Cisco IP Phone 7800 Series


Spare Handset Cord for Cisco IP Phone 7800 Series


Spare Handset Hook for Cisco IP Phone 7800 Series, 20 Pieces


Spare Wallmount Kit for Cisco IP Phone 7800 Series


Spare Wallmount Kit for Cisco IP Phone 7861


Spare Foot stand for Cisco IP Phone 7800 Series


Spare Foot stand for Cisco IP Phone 7861


Spare Black Bezel for Cisco IP Phone 7821


Spare Silver Bezel for Cisco IP Phone 7821


Spare Black Bezel for Cisco IP Phone 7841


Spare Silver Bezel for Cisco IP Phone 7841


Spare Black Bezel for Cisco IP Phone 7861


Spare Silver Bezel for Cisco IP Phone 7861


Cisco Power Cube 3


Power Cord Asia Pacific


Power Cord Argentina


Power Cord Australia


Power cord for Brazil


Power Cord European


Power Cord China


Power Cord Japan


Power Cord North America


Power Cord Switzerland


Power Cord United Kingdom


The Cisco® IP Phone 7800 Series are covered by a Cisco standard 1-year replacement warranty.

Cisco Unified Communications Services

Cisco and our certified partners can help you set up a secure, dependable Cisco Unified Communications solution, meeting aggressive deployment schedules and accelerating business advantage. Cisco's portfolio of services is based on proven methodologies for unifying voice, video, data, and mobile applications on fixed and mobile networks.

Our unique lifecycle approach to services defines what’s needed at each phase of the solution lifecycle. Customized planning and design services help you create a solution that meets your business needs. Award-winning technical support helps you boost your operational efficiency. Remote management services simplify day-to-day operations. And optimization services let you modify and improve your network solution when business needs change.

More Information

For additional details on the Cisco® IP Phone 7800 Series, go to