| Telephone Type | IP Phone |
| Voice Mail Capability | YES |
| Speakerphone | Full-duplex |
| Caller ID | YES |
| Call Forwarding | YES |
| Call Hold | YES |
| Call Transfer | YES |
| Message Waiting Capability | YES |
| Ringer Control | YES |
| Volume Control | YES |
| Hearing Aid Compatible | YES |
| Programmable Buttons Qty | 5 |
| Power Over Ethernet (PoE) Support | YES |
| Voice Codecs | G.711 a-law and mu-law, G.722, G.729a/b, Internet Low Bitrate Codec (iLBC), and Internet Speech Audio Codec (iSAC), G.722.1, G.772.2, OPUS |
| Model | CISCO UC PHONE 8851 |
| Multiline Operation Capability | YES |
| Status Indicators | YES |
| Key / Function Button | Line keys; Soft keys; Back and release keys; Four-way navigation and select keys; Hold/Resume, Transfer, and Conference keys; Messaging, Application, and Directory keys; Standard keypad; Volume-control toggle key; Speakerphone, headset, and mute keys |
Cisco IP Phone 8851 - VoIP Phone, TAA Compliant, 5-Line, Bluetooth, PoE

Key Benefits
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- Ensures compatibility and scalability with Cisco Unified Communications Manager and Hosted Collaboration platforms
- Enhanced user interaction via 5-inch full-color LCD, Bluetooth connectivity, and intuitive keypad
- TAA compliance and Hearing Aid Compatibility make it suitable for government and accessibility-focused deployments
Product Overview
The Cisco IP Phone 8851 is a feature-rich VoIP communication device that supports five programmable lines and multiple VoIP protocols including SIP, RTP, and SRTP. Its 5-inch WVGA color screen, Bluetooth integration, and PoE support provide an efficient and flexible user experience. Designed for TAA compliance, it offers enterprise-ready features such as call forwarding, conferencing, full-duplex speakerphone, and compatibility with Cisco Unified Communications platforms. The device is suitable for wall or desk mounting and supports up to two expansion modules, making it scalable and suitable for a wide range of business environments.
Specifications
Primary Information
Special Feature
| COO | CHINA / MEXICO / UNITED STATES |
| TAA compliance | Yes |
Dimensions&Miscellaneous
| Width(Base) | 10.13 Inch |
| Height(Base) | 9.02 Inch |
| Depth(Base) | 1.57 Inch |
| Weight(Base) | 2.62 lbs. |
UNSPSC Code
| UNSPSC Code | 43191511 |