Product Type | VoIP phone |
Lines Supported | 5 lines |
Speakerphone | Yes |
Conference Call Capability | Yes |
Firmware Upgradable | Yes |
Programmable Buttons Qty | 5 |
Power Over Ethernet (PoE) Support | Yes |
Weight | 2.6 lbs |
Power Requirements | Class 3 PoE (IEEE 802.3af) |
Cisco IP Phone 8851 NR, 5-Line, WVGA Display, PoE, Charcoal

Key Benefits

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- Delivers clear, vibrant display and intuitive navigation for improved user productivity
- Built-in security and rich codec support ensure high voice quality and protected communication
- PoE support and dual Ethernet ports help reduce cabling and streamline desktop deployment
Product Overview
The Cisco IP Phone 8851 NR is a professional-grade VoIP solution featuring five programmable lines and multiple communication protocols such as SIP and SRTP. Its 5-inch color LCD display with 800x480 resolution offers excellent clarity for a user-friendly experience. Connectivity includes 2x Gigabit Ethernet ports, PoE support, and integrated Bluetooth with PBAP and HFP profiles. Designed for flexibility, it supports wall or table mounting and expansion modules. With TAA compliance, advanced voice codecs, and strong security protocols like IEEE 802.1X, this model is ideal for scalable enterprise communication deployments.
Specifications
Product Overview
Wireless Features
Wireless Interface Provided | Bluetooth |
Bluetooth Profiles | Hands-Free Profile (HFP), Phonebook Access Profile (PBAP) |
Display
Type | LCD display - color |
Display Location | Base |
Diagonal Size | 5" |
Display Resolution | 800 x 480 pixels |
Color Depth | 24-bit (16.7 million colors) |
Backlit | Yes |
Cloud Management & Licensing
Compatible Software | Cisco Unified Communications Manager 8.5.1 or later, Cisco Hosted Collaboration Solution, Cisco Unified Communications Manager Express 10.0 or later |
Additional Features
Call Services | Voice Mail, Caller ID, Call Waiting, Call Forwarding, Call Transfer, Call Hold, Message Waiting Capability |
Key Expansion Module Max Qty | 2 |
Menu Operation | Yes |
Indicators | Voice message waiting indicator, speakerphone indicator, headset |
Additional Functions | Call timer, Intercom |
Service & Support | Limited warranty - replacement - 1 year |
Interfaces
Network Ports Qty | 2 x Ethernet 10Base-T/100Base-TX/1000Base-T |
Connections | Headset jack / RJ-9, Electronic hook switch (EHS), USB |
VoIP Protocols | SIP, RTCP, RTP, SRTP, SDP |
Voice Codecs | G.722, G.729a, G.711u, G.711a, iLBC, iSAC |
Dialer Type | Keypad |
Dialer Location | Base |
IP Address Assignment | DHCP, static |
Network Protocols | IP, TFTP, UDP, Cisco Discovery Protocol (CDP), HTTP, DNS, HTTPS, SRTP, LLDP-MED, RTCP, RTP |
Quality of Service | IEEE 802.1Q (VLAN), IEEE 802.1p |
Physical & Environmental
Width | 10.1 in |
Depth | 1.6 in |
Height | 9 in |
Placing / Mounting | Wall-mountable, table mount |
Body Color | Charcoal |
Hearing Aid Compatible | Yes |
Compliance & Origin
TAA Compliant | Yes |
Country of Origin | MEXICO / UNITED STATES |
Compliance Standards | IEEE 802.1X, IEEE 802.1Q, IEEE 802.1p, LLDP-MED |
Advanced Security Features
Security | IEEE 802.1X, TLS, SRTP |