CP-7811-K9 Cisco IP Phone 7811 supporting one line

Cisco CP-7811-K9 - IP Phone 7811 Overview

The Cisco IP Phone 7811 is part of the Cisco 7800 Series, which delivers secure, reliable, and energy-efficient VoIP communications for businesses of all sizes. The 7811 model is the simplest in the series, offering a single line and basic features at a very affordable price point.

🔧 Key Specifications

• Lines Supported: 1 line (ideal for light/occasional use)
• Display:
  • 3.28-inch (384x106 pixel) grayscale, non-backlit display
  • High-resolution for clear text and icons
• Audio:
  • Wideband audio (G.722 codec support)
  • Full-duplex speakerphone
  • Optional wideband handset/headset
• Connectivity:
  • 2x 10/100 Ethernet ports (switch + PC passthrough)
  • Power over Ethernet (PoE) Class 1 support
  • Optional external power adapter (if PoE not available)
• User Interface:
  • Dedicated fixed keys (hold, transfer, conference, redial, voicemail, etc.)
  • Four-way navigation cluster
• Security:
  • Secure boot and image authentication
  • Device authentication and signaling/media encryption
• Deployment Options:
  • Cisco Unified Communications Manager
  • Cisco Hosted Collaboration Solution (HCS)
  • Cisco Webex Calling
  • Third-party call control (with multiplatform firmware option)

🧩 Ideal Use Cases

• Lobbies, cafeterias, or waiting areas where a simple, reliable phone is needed
• Occasional/light phone users in enterprise environments
• Cost-sensitive deployments that still require enterprise-grade security and reliability
• Organizations standardizing on Cisco Unified Communications