Cisco 8851 IP Phone — Corded/Cordless with Bluetooth

The Cisco 8851 IP Phone is the pinnacle of versatile enterprise communication, engineered to empower teams in both small offices and sprawling campuses. This corded and cordless phone combines the reliability of traditional desk telephony with the mobility of a cordless handset and the convenience of Bluetooth connectivity. Finished in a sleek charcoal tone, it is designed to blend seamlessly into any professional environment, from front desks to executive suites. With desk- and wall-mount options, easy provisioning, and robust interoperability with Cisco and other SIP-based platforms, the 8851 helps organizations reduce friction, boost collaboration, and scale contact center and knowledge-work efficiency without sacrificing audio quality or security.

• Flexible corded and cordless operation: Use the wired handset for steady, distraction-free calls or switch to the cordless handset to move around the office, conference rooms, or shared workspaces without losing connection or call context. The design supports smooth handoff between base and cordless components, enabling on-the-go multitasking and better on-site collaboration for teams that circulate through different zones.
• Crystal-clear audio for every conversation: Expect superior voice quality with wideband audio, advanced noise suppression, and acoustic echo cancellation. The Cisco 8851 is built to cut background noise and ensure every word is heard clearly, whether you’re negotiating a deal, coordinating a project with teammates, or delivering a remote presentation to a distributed audience.
• Seamless collaboration and interoperability: Designed to work with Cisco Unified Communications Manager and other SIP-based platforms, the 8851 supports multiple lines, call transfer, conferencing, and presence indicators. Its compatibility with Cisco’s ecosystem means organizations can deploy a consistent, policy-driven experience across all devices, simplifying IT management and improving user adoption across departments.
• Easy provisioning, security, and reliability: Centralized management, automatic software updates, and enterprise-grade security help protect communications and devices from evolving threats. With features like secure provisioning and encryption for calls, organizations can maintain compliance and reduce exposure to risk, while QoS reliability ensures steady performance even on busier networks.
• Versatile setup and ergonomic design: Build a workspace that fits your needs with desktop use or wall mounting. The 8851’s compact footprint, durable construction, and charcoal finish provide a professional aesthetic that complements any office layout. Programmable keys, an intuitive navigation system, and user-friendly menus shorten the learning curve for new users and support quick workflow customization for seasoned teams.

Technical Details of Cisco 8851 IP Phone

• Display: Color LCD with an intuitive interface designed for fast navigation, contact access, and quick access to lines and settings.
• Networking and power: Ethernet with Power over Ethernet (PoE) support to simplify cabling and power delivery; compatible with standard PoE switches for clean, scalable installs.
• Connectivity: Built-in Bluetooth for wireless headsets and peripherals; USB port(s) for accessories and expansion modules to extend functionality.
• Mounting and form factor: Desktop and wall-mount capable, offering a compact, professional footprint suitable for desks, kiosks, and reception areas.
• Security and management: Supports secure provisioning, encryption (such as TLS/SRTP), and integration with Cisco security and management ecosystems for centralized control and policy enforcement.
• Audio and performance: High-definition audio with noise reduction and echo cancellation; supports multiple lines and efficient call handling features essential for enterprise environments.

How to install Cisco 8851 IP Phone

• Unbox and verify contents: ensure you have the base unit, any cordless handset or charging cradle, stand, mounting kit, Ethernet cable, and necessary power accessories for your deployment.
• Connect to the network: insert the Ethernet cable into the phone’s network port and connect to a PoE-enabled switch or supply power via an appropriate power adapter if PoE is not available.
• Power on and initial configuration: power up the device and follow the on-screen setup wizard or use your organization’s provisioning server to load SIP settings and device policies.
• Pair Bluetooth peripherals: enable Bluetooth in the phone’s settings, then pair compatible wireless headsets or accessories to enable hands-free operation and flexible workflows.
• Provisioning and deployment: configure SIP accounts, assign lines and features, adjust presence and call-handling rules, upload directories, and determine desk or wall-mount placement with the included hardware. Verify firmware is current and perform a test call to confirm audio quality and connectivity.

Frequently asked questions

• Q: Does the Cisco 8851 support Bluetooth headsets? A: Yes. The 8851 includes built-in Bluetooth for wireless headset pairing and peripheral device support, enabling hands-free calling and easier multitasking.
• Q: Can the 8851 be wall-mounted? A: Yes. The phone is designed for both desk use and wall mounting, with the appropriate mounting kit to optimize space and accessibility.
• Q: Is the Cisco 8851 compatible with Cisco Unified Communications Manager (CUCM) and other SIP platforms? A: Yes. The 8851 is built to work with CUCM and other SIP-based systems, supporting centralized provisioning and policy enforcement for consistent deployments.
• Q: What kind of audio quality can I expect? A: You can expect high-definition audio with noise reduction and echo cancellation, delivering clear conversations even in busy environments.
• Q: How is security handled? A: The device supports secure provisioning and encryption (TLS/SRTP), with compatibility for enterprise security and management tools to protect communications infrastructure.