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by Cisco
Product Line: Cisco CP8831
Product Type: audio quality
Sold out
Original price $0.00 - Original price $543.00
Original price
$0.00 - $543.00
Current price $0.00
Title: Surplus

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Product Description

The CP8831-K9 Cisco conference phone features wideband acoustics ranging from 160 Hz to 20 kHz, with a peak output of 92 dB SPL, and supports the Session Initiation Protocol (SIP) for signaling. It offers comprehensive call features including dialing, auto-answer, and conference, while ensuring security through 802.1x supplicant (TLS) and SRTP. The device operates within a temperature range of 0 °C to 40 °C, has a 396 x 162 pixel display, and is powered by 48 VDC as an IEEE 802.3af PoE Class 3 device.

Key Feature for the CP8831K9

  • What is the frequency range of the Wideband Acoustics feature?
    The frequency range spans from 160 Hz to 20 kHz, +/-3 dB.
  • How does the device support call features?
    The device supports various call features including Dialing, Auto-Answer, Barge, Call Forward, Call History Lists, Caller ID, Fast Dial, Immediate Divert, Mute, Voicemail, and Conference through the Session Initiation Protocol.
  • What are the dimensions of the phone?
    The phone measures 10.38 inches in height and width, with a depth of 2.0 inches.
  • Can you detail the device's security protocols?
    Device authentication is secured through 802.1.x supplicant (TLS) and SRTP.
  • What type of display does the phone have?
    The phone features a display of 396 x 162 pixels, with a size of 3.25 x 1.5 inches.
  • What materials are used in the phone's casing?
    The phone's casing is made from Acrylonitrile Butadiene Styrene (ABS) Textured Plastic.
  • What is the device's operational altitude limit?
    The device can operate up to an altitude of 9843 ft at 25 °C.
  • What languages does the device support?
    The device supports multiple languages.
  • What are the temperature ranges for operating and non-operating conditions?
    The minimum operating temperature is 0 °C, and the maximum is 40 °C. For non-operating conditions, the temperature ranges from -10 °C to 60 °C.
  • How is the IP address assigned to the device?
    IP address assignment can be configured statically or through the DHCP client.

Product Review

The Cisco CP8831-K9 offers wideband acoustics from 160 Hz to 20 kHz, ensuring clear audio quality for calls, and supports a broad range of call features such as dialing, auto-answer, and voicemail, enhancing user experience. However, its reliance on Session Initiation Protocol (SIP) may limit interoperability with non-SIP environments, and the acrylonitrile butadiene styrene (ABS) casing, while durable, may not appeal to all aesthetics. Additionally, the device's security features, including device authentication through 802.1x (TLS) and SRTP, provide a secure communication environment, essential for confidential business communications.


The Cisco CP8831-K9 is a conference phone designed to enhance the usability and audio quality of group calls within professional settings. The device integrates seamlessly with business communication infrastructures, offering clear, wideband acoustics, and a range of call management features. The core specifications and features of the Cisco CP8831-K9 are highlighted below, providing a comprehensive overview of its capabilities and design. At the heart of its audio excellence, the CP8831-K9 supports wideband acoustics ranging from 160 Hz to 20 kHz, within a +/-3 dB variance, ensuring that voices are heard with remarkable clarity and natural tonality. This is complemented by an impressive output of 92 dB SPL peak output, enabling sound to fill conference rooms without distortion or loss of quality. The device operates on the Session Initiation Protocol (SIP) for signaling, making it compatible with a wide array of VoIP infrastructures.
  • Display: 396 x 162 pixels, providing clear visibility of call information and menus on a 3.25 x 1.5 in. screen.
  • Security: Features device authentication through 802.1x supplicant (TLS) and SRTP, ensuring secure communication channels.
  • Power: Operates as an interoperable IEEE 802.3af PoE Class 3 device with an operating voltage of 48 VDC, simplifying installation and power management.
The CP8831-K9 supports a broad range of call features, including dialing, auto-answer, barge, call forward, call history lists, caller ID, fast dial, immediate divert, mute, voicemail, and conference capabilities. These features are designed to enhance productivity and user experience in a corporate environment. From a security standpoint, the CP8831-K9 ensures secure communications with device authentication through 802.1.x supplicant (TLS) and supports SRTP for encrypted voice transmission. This is crucial for maintaining confidentiality and integrity of business communications. The phone's casing is made from Acrylonitrile Butadiene Styrene (ABS) textured plastic, durable enough to withstand the rigors of daily use. Its dimensions are 10.38 in. in both height and width, with a depth of 2.0 in., and it weighs 3.5 lbs, making it a substantial yet manageable addition to any conference room. In terms of environmental tolerances, the CP8831-K9 operates efficiently between 0 °C and 40 °C and can be stored in temperatures ranging from -10 °C to 60 °C. Its non-operating relative humidity tolerance is up to 95% noncondensing, and it can operate at altitudes up to 9843 ft at 25 °C, with non-operational altitudes reaching up to 15,000 ft. These specifications ensure reliability across various environmental conditions. The device also meets stringent EMC immunity standards, including EN55024, CISPR24, EN300386, and KN24, ensuring resilience in the face of electromagnetic interference. The operating voltage is 48 VDC, and it supports both static IP address assignment and configuration through the DHCP client, ensuring flexibility in network integration. Overall, the Cisco CP8831-K9 is designed to meet the demands of modern business communication with its high-quality audio, comprehensive call management features, and robust security protocols. Its hardware specifications ensure durability and compliance with industry standards, making it a reliable choice for enterprise-level conferencing needs.


Part Number Cisco CP8831-K9
Manufacturer Cisco
Audio Frequency Range 160 Hz - 20 kHz, within +/-3 dB tolerance
Maximum Sound Pressure 92 dB SPL at peak
Protocol for Signaling Supports Session Initiation Protocol (SIP)
Call Management Functions Includes Dial, Auto-Answer, Call Park, Forwarding, Log of Calls, Identification of Caller, Speed Dial, Direct Divert, Mute, Access to Voicemail, and Conference Capabilities
Security Features Device verification via 802.1x with TLS and Secure Real-Time Transport Protocol (SRTP)
Language Options Supports several languages
Material of Phone Housing Textured Acrylonitrile Butadiene Styrene (ABS) Plastic
Dimensions (Height) 10.38 inches
Dimensions (Width) 10.38 inches
Dimensions (Depth) 2 inches
Base Unit Weight 3.5 pounds
Screen Resolution 396x162 pixels
Operating Temperature Range (Min) 0 degrees Celsius
Operating Temperature Range (Max) 40 degrees Celsius
Storage Temperature Range (Min) -10 degrees Celsius
Storage Temperature Range (Max) 60 degrees Celsius
Max Humidity during Storage 95% non-condensing
Max Operating Altitude 9843 feet at 25 degrees Celsius
Max Storage Altitude 15,000 feet
EMC Compliance EN55024, CISPR24, EN300386, KN24
Screen Dimensions 3.25 x 1.5 inches
Sound Pickup Range Full 360-degree coverage
Required Operating Voltage 48 VDC
Network Device Classification Compatible with IEEE 802.3af PoE, Class 3
IP Configuration Method Manual setting or via DHCP

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