Cisco 8851 Five line Color Display Unified IP Phone with Multiplatform Firmware, CP-8851-K9
| Product Type | Cisco Unified IP Phone | Form Factor | Desktop, Wall Mountable |
| Dimensions | 9.02 x 10.13 x 1.57 in | Power over Ethernet | Yes |
| Ports | 10/100/1000BASE-T | Min Operating Temp | 32°F |
| Max Operating Temp | 104°F | Min Storage Temp | 14ºF |
| Max Storage Temp | 140°F | Operating Humidity | 10 to 90% (noncondensing) |
| Brand | Cisco | Resolution | 800 × 480 |
| Display | Color | Conferencing | Yes |
| Additional Ports | Headset Port | Speakerphone | Yes |
| Connectivity Type | IP/VoIP | Firmware | MPP/3PCC |
| Audio Codecs | G722, G722.1C, G726, G.729, G.729A, G723, iLBC, Opus, PCMU (G.711A), PCMA (G.711μ) |
Cisco 8851 | Cisco 8851 Five line Color Display Unified IP Phone with Multiplatform Firmware | CP-8851-K9 | Cisco VOIP Phones | Refurbished | Lifetime Warranty
The Cisco 8851 IP Phone is a premium business VoIP solution designed to meet the needs of active voice users who require advanced functionality, superior audio quality, and seamless connectivity. With support for five SIP lines, a large color display, and a built-in USB port, the 8851 enhances user productivity in both office and remote work environments.
This model is equipped with Multiplatform Firmware (MPP), making it compatible with third-party SIP call control platforms like Asterisk, BroadSoft, Metaswitch, and others—ideal for businesses using non-Cisco VoIP systems.
Features:
- Five Programmable SIP Lines – Perfect for users handling multiple calls or extensions
- 5" High-Resolution Color Display – 800x480 pixels for a crisp, intuitive interface
- HD Wideband Audio – Superior voice clarity on handset, speaker, and headset
- Built-in USB Port – Connect USB headsets or charge mobile devices
- Bluetooth Support – Pair wireless headsets and mobile devices for added flexibility
- Dual Gigabit Ethernet Ports – High-speed connectivity with PC pass-through
- Power over Ethernet (PoE) – IEEE 802.3af/at support for simplified deployment (power adapter sold separately)
- 3-Way Local Conferencing – Easy conference call setup directly from the phone
- Multiplatform Firmware (MPP) – Compatible with open SIP systems, not tied to Cisco CUCM
Applications:
- Mid-to-large business environments
- Remote and hybrid workers
- SIP-based VoIP deployments using third-party platforms
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