Cisco CP-7811-K9 Single-Line VoIP IP Phone

The Cisco 7811 IP Phone (CP-7811-K9) is a reliable, business-class single-line IP phone designed to provide crystal-clear audio, enhanced security, and energy-efficient operation for businesses of all sizes. It features wideband audio, SIP support, and an integrated 10/100 Ethernet switch with Power over Ethernet (PoE) for seamless deployment in modern VoIP environments.

With its backlit monochrome display, intuitive 2-way navigation, and four programmable soft keys, the 7811 delivers a simple yet effective telephony experience. Whether you’re a desk-based employee, a lobby user, or a light call handler, this device offers cost-effective communication with enterprise-grade functionality, making it ideal for common areas or low-to-moderate call volume users.

Product Features

Single-Line IP Communication
Supports one SIP-based voice line, ideal for basic voice communications in offices, reception areas, and hallways.

Clear, Easy-to-Read Display
Anti-glare 384 × 106 pixel monochrome backlit screen with intuitive navigation and soft key support for easy access to call features and directories.

Integrated Speakerphone
Full-duplex speakerphone provides hands-free operation with narrowband audio for clear voice performance.

Programmable Soft Keys
Includes 4 context-sensitive soft keys to streamline call handling and access key functions quickly.

Secure and Encrypted Voice
Supports TLS and SRTP encryption protocols, ensuring secure voice communication across the network.

Efficient Network Integration
Built-in 10/100 Ethernet switch allows for a PC pass-through connection and simplifies desk cabling.

Power Options
PoE-enabled (Class 1) for power and connectivity via a single Ethernet cable. Compatible with Cisco EnergyWise for optimized energy consumption.

Advanced IP Features
Support for Cisco Expressway allows secure remote access without VPN. Compatible with Cisco Spark Cloud, CUCM, and other major Cisco call control platforms.

Product Specifications

• Model: Cisco CP-7811-K9
• Color: Charcoal
• Lines Supported: 1 SIP line
• Display: 384 × 106 pixel monochrome backlit LCD
• Speakerphone: Yes, full-duplex (narrowband)
• Soft Keys: 4 programmable
• Fixed Feature Keys: 11 (no dedicated headset key)
• Headset Support: Not supported
• Navigation: 2-way navigation cluster
• Ethernet Ports: 1 × 10/100 Mbps
• Power over Ethernet: IEEE 802.3af Class 1
• Protocols Supported: SIP, DHCP, CDP, LLDP
• Audio Codecs: G.711a/u, G.722, G.729a, iLBC, OPUS
• Security Features: SRTP, TLS, 802.1X
• Advanced Features: Cisco Spark cloud registration, Mobile Remote Access
• Mounting Options: Desktop or wall-mountable
• Operating Platforms:
  • Cisco Unified Communications Manager 8.5.1 and later
  • Cisco Business Edition 8.6.2
  • Cisco Hosted Collaboration Solution (HCS) 9.1.2
  • Cisco Spark (requires Phone OS 11.0 or later)
• Encryption Compliance: FIPS 140-2 Level 1 (with Phone OS 11.5+)