IP Phone Cisco CP-8811-K9

The Cisco IP Phone 8811 (CP-8811-K9) is a business-grade VoIP desk phone designed for reliable voice communications in office environments. It features a 5-inch greyscale LCD, a wired handset, speakerphone, Gigabit Ethernet with PoE support, and compact dimensions (257.3 mm x 40 mm x 229.1 mm). The phone supports multiple SIP registrations (up to 10) and a range of industry-standard voice codecs (including G.711a and G.722) to ensure clear audio quality and compatibility with corporate SIP platforms.

Advantages

The Cisco IP Phone 8811 combines a straightforward ergonomic design with enterprise-level security and network features. Wideband audio and support for high-quality codecs deliver clear voice communication, while the integrated Gigabit Ethernet switch and PoE simplify desk deployment. The device includes encrypted voice communications and common security algorithms for protected calls and dependable operation in managed business networks.

Suitable for

• Office desks and cubicles in small to large businesses
• Reception and shared workspaces requiring a reliable desk phone
• SIP-based corporate telephony systems and VoIP deployments

Key specifications

• Model: Cisco CP-8811-K9
• Display: 5-inch greyscale LCD
• Handset: Wired handset; speakerphone available
• Network: Gigabit Ethernet switch; Power over Ethernet (PoE)
• SIP registrations: Up to 10
• Supported codecs: G.711a, G.722 and other standard voice codecs
• Dimensions: 257.3 mm x 40 mm x 229.1 mm
• Weight: 1.17 kg
• Color: Black

How to use

Connect the Cisco CP-8811-K9 to your network using the Gigabit Ethernet port and enable PoE or connect an appropriate power source. Attach the wired handset and configure the phone with your SIP account credentials through the device web interface or provisioning server. Use the handset or speakerphone for calls and navigate menus on the 5-inch display to access call history, voicemail, and settings. Follow your organisation’s IT guidelines for firmware updates and security configuration.

Recommendations

For optimal voice quality and security, deploy the phone on a managed VLAN with QoS enabled and ensure the latest firmware and security settings are applied. Use PoE where available for neat cabling and centralized power management.