Description
Product Overview
The Cisco CP-8851-K9 is a premium business-class VoIP desk phone from Cisco’s 8800 Series, designed for modern office environments. It features a high-resolution 5″ color display, HD wideband audio, and advanced connectivity options such as Bluetooth and USB.
This model is ideal for professionals, managers, and knowledge workers who need reliable, high-quality VoIP communication. The Cisco CP‑8851 supports SIP and SCCP protocols, making it compatible with Cisco Unified Communications Manager and a wide range of SIP-based VoIP platforms.
Key Features of Cisco CP-8851-K9
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5″ High-Resolution Color Display (800 × 480 pixels) with intuitive menu navigation.
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Five Programmable Line Keys for managing multiple simultaneous calls.
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HD Wideband Audio with full-duplex speakerphone for clear voice quality.
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Built-in Bluetooth for wireless headset and mobile device integration.
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USB Ports for headset connectivity and desk accessories.
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Power over Ethernet (PoE) support (IEEE 802.3af/at) for easy installation.
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Advanced Call Features: hold, transfer, conference, messaging, call park, and voicemail.
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Security & QoS: SRTP/TLS encryption, VLAN support, and secure firmware updates.
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Expansion Module Support: Add up to two Cisco 8800 Key Expansion Modules for more lines and features.
Connectivity & Network
The CP‑8851-K9 supports dual Gigabit Ethernet ports for network and PC connectivity. PoE simplifies installation by providing power over the network cable. It is compatible with Cisco Unified Communications Manager for centralized provisioning, call control, and firmware updates.
Ideal Use Cases of Cisco CP-8851-K9
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Professional workstations and executive offices
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SIP and Cisco Unified Communications deployments
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Collaborative workspaces requiring Bluetooth integration
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Offices with PoE-enabled network infrastructure
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Knowledge workers and supervisors who manage multiple calls
This phone is designed for businesses seeking a high-quality VoIP endpoint with advanced features while maintaining flexibility and reliability.
FAQs – Cisco CP‑8851-K9
Q1: What is the Cisco CP‑8851-K9 used for?
It is a high-end VoIP desk phone for professional office communication, with color display and advanced connectivity.
Q2: Does the CP‑8851-K9 support Power over Ethernet (PoE)?
Yes, it supports IEEE 802.3af/at PoE, eliminating the need for a separate power adapter.
Q3: How many lines can the CP‑8851-K9 handle?
It supports up to five programmable line keys for multiple calls.
Q4: Does the Cisco 8851 support Bluetooth headsets?
Yes, it has built-in Bluetooth for wireless headsets and mobile devices.
Q5: Is this phone compatible with SIP VoIP systems?
Yes, it works with SIP and Cisco Unified Communications Manager, providing broad VoIP compatibility.
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