Description:

The Cisco CP-8851-K9 Unified IP Phone is an enterprise-grade VoIP desk phone designed for Cisco Unified Communications systems to provide secure voice communication, high-definition audio, and advanced call management features within business telephony networks. It integrates with Cisco Unified Communications Manager (CUCM) platforms to support IP-based voice services, collaboration tools, and centralized call control for enterprise communication environments. The phone features a high-resolution color display, programmable line keys, and Gigabit Ethernet connectivity to support modern office networking requirements. Commonly installed in corporate offices, contact centers, government facilities, and enterprise communication systems where reliable IP telephony and unified communication services are required. Maintenance teams, telecom administrators, and system integrators deploy this device for VoIP phone deployment, telephony system upgrades, workspace expansion, or replacement of legacy Cisco IP phones. 

Applications:

The Cisco CP-8851-K9 IP phone is used in enterprise unified communications environments to provide reliable Voice over IP (VoIP) telephony for employees and business communication systems. It is commonly deployed in corporate offices, call centers, healthcare facilities, financial institutions, and government organizations where secure and high-quality voice communication is required. IT administrators install these phones as part of Cisco Unified Communications deployments to support internal calling, conferencing, call routing, and collaboration services across enterprise voice networks.

Technical Specifications:

• Manufacturer Part Number (MPN): CP-8851-K9
• Brand: Cisco
• Product Type: Unified IP Phone
• Series: Cisco IP Phone 8800 Series
• Display: 5-inch high-resolution color display
• Lines Supported: Up to 5 programmable line keys
• Audio Quality: Wideband HD voice support
• Network Interface: 2 × 10/100/1000 Gigabit Ethernet ports
• Power Options: Power over Ethernet (PoE) or optional external power adapter
• Connectivity: RJ-9 headset port and USB port support
• Protocol Support: SIP and Cisco Unified Communications protocols
• Compatibility: Cisco Unified Communications Manager (CUCM)
• Mounting Options: Desk stand or wall mount

Common Replacements:

• Cisco CP-8841-K9 Unified IP Phone
• Cisco CP-8861-K9 Unified IP Phone
• Cisco CP-8811-K9 Unified IP Phone