

📞 Elevate your office calls with Cisco’s pro-grade clarity and connectivity!
The Renewed Cisco CP-8851-K9 is a high-performance IP phone designed for midsize to large enterprises, featuring a 5-inch color display, full-duplex wideband audio, and a built-in Gigabit Ethernet switch. Its multi-line support and programmable keys boost productivity, while ergonomic design ensures comfort during long workdays. Ideal for professionals seeking reliable, scalable, and secure voice communication solutions.
| ASIN | B07FJZMNHX |
| Answering System Type | Digital |
| Best Sellers Rank | #184,078 in Office Products ( See Top 100 in Office Products ) #268 in VoIP Phones |
| Brand | CISCO DESIGNED |
| Color | Black |
| Compatible Devices | Cisco Unified Business Communications System |
| Conference Call Capability | 3 way |
| Customer Reviews | 3.3 out of 5 stars 18 Reviews |
| Dialer Type | Single Keypad |
| Enclosure Material | Plastic |
| Is there Caller ID | Yes |
| Item Dimensions | 7 x 16 x 12 inches |
| Item Weight | 2.3 Pounds |
| Manufacturer | CISCO |
| Material | Plastic |
| Multiline Operation | Multi-Line Operation |
| Power Source | Corded Electric |
| Recording Capacity | 22 Minutes |
| Telephone Type | Corded |
| UPC | 696177617662 |
G**.
Perfect for any office!
This Renewed Cisco 8851 Unified IP Phone is a professional‑grade desk phone that delivers crisp, high‑quality voice communications — ideal for busy offices and enterprise environments where reliability matters. Its large, 5‑inch color display and intuitive interface make navigating calls, contacts, and features straightforward, while wideband audio and full‑duplex speakerphone ensure clear conversations whether you’re using the handset or hands‑free mode. The phone also includes a built‑in Gigabit Ethernet switch plus programmable line keys to support multiple directory numbers or speed dials for greater productivity. Overall, it’s a dependable, feature‑rich IP phone that combines ergonomic design with scalable VoIP functionality for modern business communication needs.
B**E
THESE PHONES ARE LOCKED AND CAN NOT BE ACTIVATED. STAY AWAY! YOU'VE BEEN WARNED
IT ASK FOR A CODE, AND PER THE TECH AT RINGCENTRAL, IF IT IS ASKING FOR A CODE, THIS MEANS THE PHONE IS LOCKED TO A COMPANY/CARRIER AND CAN NOT BE ACTIVATED ELSEWHERE.
J**S
CUCM Compatible. Not MPP/SIP without rigorous Set-Up
For those customers who are looking to buy a 8851 Cisco phone please be aware that many of the phones ordered are CUCM phones meaning that they only work with Cisco Software, these phones will not work with a aplication like FreePBX or 3CX or similar pbx softwares. Though if you know people who are in the IT industry who know how to set these up do not buy. Overall the quality of the phone is okay it is in great condition. You have been warned... Unless you know what you are doing.
M**M
Works great
I purchased this refurb for my home office. Works just like the one in my work office. Couldn't be happier.
H**.
The phone is a standard in offices
The audio quality is very good.
A**M
Device arrived bricked
Device is stuck in a boot cycle. It will not connect to network or tftp server. Device never accesses network. The MAC address never shows up in the address table.
I**S
Renewed does not mean refurbished or reconditioned
The phones I received were very worn and scratch all over.
M**A
Good Cisco Phones
We've bought quite a few and they've come in good shape. After a quick reset, we are able to set them up and deploy them without any issues
Trustpilot
2 weeks ago
3 days ago