Cisco CP-8811-K9 IP Phone | Gigabit VoIP Phone with PoE & Wideband Audio | New
Cisco CP-8811-K9 IP Phone with Gigabit Ethernet and PoE

The Cisco 8811 IP Phone (CP-8811-K9) is a feature-rich, business-class VoIP solution designed for high-quality voice communication in professional settings. It’s ideal for knowledge workers, remote employees and enterprise users seeking secure and scalable telephony. With wideband audio, Gigabit Ethernet support, Power over Ethernet (PoE), and a 5-inch high-resolution backlit grayscale display, the 8811 delivers exceptional performance and a modern, ergonomic user experience.

Key Features & Benefits

  • High-Fidelity Wideband Audio: Clear communication via handset, headset or speakerphone.
  • Large Backlit Display: 5" widescreen (800 x 480 pixels) grayscale LCD for intuitive navigation.
  • Secure VoIP Communication: Supports SRTP, TLS, and secure boot features for encrypted calls.
  • Dual Gigabit Ethernet Ports: Integrates your IP phone and PC on a single network cable.
  • Power over Ethernet (PoE): Simplifies desk setup with no additional power adapters needed.
  • Programmable Line Keys: 5 configurable line/feature buttons with LED indicators.
  • Unified Communication Ready: Seamless compatibility with Cisco CUCM, Webex Calling, BE6000 and more.
  • Energy-Efficient Design: ENERGY STAR® qualified for low power consumption.
  • ADA & HAC Compliant: Fully accessible and hearing-aid compatible.
  • Durable, Modern Design: Clean ABS plastic body with wall or desk mount options.

Specifications

  • Manufacturer: Cisco
  • Model: CP-8811-K9
  • VoIP Protocols: SIP, SRTP, RTP, RTCP, SDP
  • Voice Codecs: G.711u/a, G.722, G.729a, iLBC, iSAC
  • Lines Supported: Up to 5 lines
  • Display: 5" LCD, 800x480 resolution, backlit grayscale
  • Connectivity: 2x Gigabit Ethernet ports, RJ-9 headset jack, EHS supported
  • Security: TLS, SRTP, secure boot, device authentication
  • Mounting Options: Wall-mountable and desk-mount ready
  • Power: PoE (IEEE 802.3af) or optional AC adapter (not included)
  • Dimensions (H x W x D): 9" x 10.1" x 1.6"
  • Weight: 2.6 lbs
  • Certifications: ADA, HAC, ENERGY STAR

Frequently Asked Questions

  • Does the Cisco 8811 support PoE?
    Yes, it supports 802.3af PoE for power and connectivity through one cable.
  • Can it work with my VoIP provider?
    Yes, it supports standard SIP and integrates with Cisco CUCM, Webex Calling, and others.
  • Is this phone hearing-aid compatible?
    Yes, it complies with HAC and ADA standards.
  • What kind of display does the 8811 have?
    A 5-inch, backlit grayscale LCD with 800x480 resolution.
  • Does it support secure voice communication?
    Yes, including SRTP, TLS, and secure boot features.
  • Is the phone wall-mountable?
    Yes, it can be mounted on the wall or placed on a desk.
  • Can I connect a headset?
    Yes, via RJ-9 or electronic hook switch (EHS) port.
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