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Product Details


Cisco CP-8831-K9= IP Phone


Model: CP-8831-K9= Cisco 8800 IP Phone
Detail: Cisco Unified IP Conference Phone 8831 base unit and control panel

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Cisco provides 7800, 8800 and more IP Phones for all-size business needs.

CP-8831-K9= is the Cisco Unified IP Conference Phone 8831 base and control panel for North America. It offers scalable solution to meet the challenges in various rooms by using extension wired or wireless microphones with daisy-chain configuration of two units. The ergonomic design of CP-8831-K9 offers acoustically pleasing, attached control panel makes display easily viewed with no need to move the unit. With supporting of CUCM and business edition systems, the phone offers more productive and more security during communication across the network.

Quick Specs

Table 1 shows the Quick Spec.

Product Code CP-8831-K9=
Display 3.5’’ – 396 x 162 pixel-based anti-glare graphical monochrome display with white backlight
Ethernet Switch 10/100
Programmable Line Keys 4
Number of Line Keys 1
Full Duplex Speakerphone Yes
Wideband Audio Yes
PoE Classification Class 3
Hands Free Yes Speakerphone
Third-party Call Control Yes
Bluetooth / DECT DECT (mics)
Power IEEE 802.3af line power, CP-PWR-CUBE-3
Dimensions (H x W x D) Base: 15.05 x 26.35 x 5.08 cm

Control panel: 14.61 x 12.7 x 2.54 cm

Product Details


Phone screen Keypad
Four programmable keys. Mute button
Navigation bar with Select key Volume rocker
Call button


LED indicator LED indicator
LED indicator Mute button


Network port Wired microphone ports
Wall power Linked Mode daisy chain port
Mini USB port

Compare to Similar Items

Table 2 shows the comparison of Cisco IP Phone 8811, 8831, 8841 and 8851.

Model CP-8811-K9 CP-8831-K9 CP-8841-K9 CP-8851-K9
Ethernet Switch 10/100/1000 10/100 10/100/1000 10/100/1000
Programmable Line Keys 4 4 4 4
Number of Line Keys 5 1 5 5
Full Duplex Speakerphone Yes Yes Yes Yes
Wideband Audio Yes Yes Yes Yes
PoE Classification Class 2 Class 3 Class 2 Class 3
Bluetooth / DECT No DECT (mics) No Bluetooth
Third-party Call Control Yes Yes Yes Yes
Replaceable Bezel Yes (Black, Silver) No Yes (Black, Silver) Yes (Black, Silver)
Wall Mountable Yes No Yes Yes

CP-8831-K9= Specification

CP-8831-K9= Specification

Signaling protocol support Session Initiation Protocol (SIP)
Codec support G.711, G.729 (a and ab), G.722, and Internet Low Bitrate Codec (iLBC)
Calling feature support
  • + Dialing (E.164)
  • Adjustable ringing and volume levels
  • Adjustable display brightness
  • Application launch pad
  • Auto-answer
  • Auto-detection of headset
  • Barge
  • Call forward
  • Call history lists
  • Call timer
  • Call waiting
  • Caller ID
  • Corporate directory
  • Conference
  • Direct transfer
  • Fast-dial service
  • Hold
  • Immediate divert
  • Join
  • Message-waiting indicator
  • Music on hold
  • Mute
  • Network profiles (automatic)
  • On- and off-network distinctive ringing
  • Personal directory
  • Predialing before sending
  • Privacy
  • Ring tone per line appearance
  • Shared line
  • Survivable Remote Site Telephony (SRST)
  • Time and date display
  • Transfer
  • Voicemail
Directories The Cisco Unified IP Conference Phone 8831 identifies incoming messages and categorizes them for users on the screen. This feature allows you to quickly and effectively return calls using direct dial-back capability. The corporate directory integrates with the Lightweight Directory Access Protocol Version 3 (LDAPv3) standard directory.
Apps The Apps soft key allows you to enter the Applications menu, where you are able to adjust display contrast, select background images (if available), and select from a large number of unique ringer sounds through the User Preference menu. Network configuration preferences also can be set up (usually by the system administrator). Configuration can be either automatically or manually set up for Dynamic Host Control Protocol (DHCP), Trivial File Transfer Protocol (TFTP), Cisco Unified Communications Manager, and backup Cisco Unified Communications Manager instances.
Help The online Help feature gives you information about the phone keys, buttons, and features. The pixel display allows for more flexible feature navigation and significantly expands the information viewed when using features such as Services, Information, Messages, and Directory. For example, the Directory button can show local and server-based directory information.
Hold, Mute, and Redial keys The Mute key is a fixed key. When it is active, the LED flashes on the Cisco Unified IP Conference Phone 8831 as well as on the optional wired and wireless microphone kits. Hold and Redial are provided as soft keys associated with the screen, and are always at the same position for easy access.
Wired control panel The panel allows easy control of the unit and viewing of the display without having to move the entire unit.
Display The conference station has a large high-resolution, graphical 3.5-inch backlit display (396 x 162 pixels).
Speakerphone The Cisco Unified IP Conference Phone 8831 offers full-duplex high-quality wideband speakerphone technology. Included are Automatic Gain Control, comfort-noise generation, silence suppression and voice activity detection, Echo Suppression, and dynamic noise reduction, which reduces noise by up to 9 dB from constant noise sources such as fans or heating, ventilation, and air conditioning (HVAC) systems.

A two-way high-fidelity loudspeaker system provides superior speech clarity versus traditional conferencing systems.

Volume control The convenient Volume Control buttons on Cisco Unified IP Conference Phone 8831 provide for easy, decibel-level adjustments for the speakerphone and ringer.
Quality-of-service (QoS) options The Cisco Unified IP Conference Phone supports DHCP and 802.1Q/p standards. The conference station can also be configured with an 801.1Q VLAN header containing the VLAN ID overrides configured by the Admin VLAN ID.
Multiple ring tones User-adjustable ring tones are available.
Security The Cisco Unified IP Conference Phone 8831 supports device authentication through 802.1.x supplicant (TLS) and SRTP.
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)

Configuration options You can configure IP address assignment statically or through the DHCP client.