Shipping included*
Exclusions
Additional shipping fees may apply in rare circumstances for deliveries outside standard service areas. In most cases, this only potentially affects shipments to the Northwest Territories and Yukon, as well as certain heavy or oversized items.
Cisco CP-8851-K9-RF 8851 IP Phone - Remanufactured - VoIP - PoE - 2x Ethernet - Desktop/Wall Mountable
Business volume discounts
Technical guidance
Preparation & staging
QC · ON · AB · BC
Product Features
Technical Overview
This IP phone operates on VoIP technology, enabling high-quality voice transmission over IP networks. It features built-in caller ID and a full-duplex speakerphone for hands-free conversations. The dual RJ-45 ports provide network connectivity and pass-through capability, with one port supporting IEEE 802.3af/at PoE to deliver both data and power over a single cable.
Compatibility extends to Cisco Unified Communications Manager and Unified Communications Manager Express environments, requiring appropriate user connect licenses. The device's physical design accommodates desktop placement or wall mounting, with dimensions of 10.13" wide × 9.02" high × 1.57" deep (257.30 × 229.11 × 39.88 mm).
This section brings together practical product details such as IP Phone Technology, Caller ID, Speakerphone, Network (RJ-45), so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The remanufactured 8851 delivers enterprise telephony features at a reduced cost, including professional-grade audio quality, reliable VoIP performance, and durable construction. Its Energy Star certification reflects power-efficient operation during active use and standby periods.
Simplified Deployment
PoE support eliminates the need for separate power adapters at each desk, reducing cable clutter and installation complexity. The wall-mountable design offers flexible placement in call centers, offices, or shared workspaces.
Enterprise Integration
Designed for Cisco Unified Communications ecosystems, this phone integrates seamlessly with existing call control platforms. The dual Ethernet ports allow direct connection to computers or other network devices without requiring additional switches.
Deployment / Use Cases
This IP phone serves organizations transitioning from traditional PBX systems to VoIP infrastructure or expanding existing Cisco Unified Communications deployments. It supports everyday business calling, internal collaboration, and customer service interactions with reliable voice quality.
The remanufactured condition makes it particularly cost-effective for volume deployments, temporary setups, or budget-conscious upgrades where new-equipment pricing is prohibitive. IT teams appreciate the simplified management through familiar Cisco platforms.
Office Desks & Cubicles
Ideal for individual knowledge workers, reception desks, or administrative stations where clear voice communication and basic telephony features are required. The desktop form factor fits standard workspaces.
Shared & Wall-Mounted Environments
Suitable for conference rooms, lobbies, manufacturing floors, or healthcare stations where wall mounting conserves desk space. PoE enables installation in locations without accessible power outlets.
Physical Profile
The phone presents a compact footprint designed for efficient use of desk real estate. Its dimensions—10.13 inches wide by 9.02 inches high by 1.57 inches deep—accommodate standard desk organizers or monitor stands. The approximate weight of 2.62 pounds provides stability during use without excessive bulk.
The dual-orientation design includes keyhole slots for secure wall mounting, allowing vertical installation in space-constrained areas. The construction balances durability with professional aesthetics suitable for corporate, retail, or institutional environments.
- Width
- 10.13" (257.30 mm)
- Depth
- 1.57" (39.88 mm)
- Height
- 9.02" (229.11 mm)
- Weight
- 2.62 lb (1188.41 g)
Highlights
- VoIP technology enables crystal-clear internet-based voice calls
- Power over Ethernet (PoE) support simplifies installation
- Two RJ-45 Ethernet ports for network connectivity and pass-through
- Built-in speakerphone and caller ID for business communications
- Desktop or wall-mountable form factor for flexible deployment
- Compatible with Cisco Unified Communications Manager platforms
- Remanufactured condition with one-year limited warranty
- Energy Star certified for power efficiency
- USB port for peripheral expansion
- Part of Cisco's reliable 8800 series IP phone family
Specifications
| Specifications | |
|---|---|
| Manufacturer | Cisco Systems, Inc |
| Manufacturer Part Number | CP-8851-K9-RF |
| Brand Name | Cisco |
| Product Series | 8800 |
| Product Model | 8851 |
| Product Name | 8851 IP Phone |
| Product Condition | Remanufactured |
| Product Type | IP Phone |
| Technical Information | |
| IP Phone Technology | VoIP |
| Caller ID | Yes |
| Speakerphone | Yes |
| Interfaces/Ports | |
| Network (RJ-45) | Yes |
| Number of Network (RJ-45) Ports | 2 |
| USB | Yes |
| PoE (RJ-45) Port | Yes |
| Physical Characteristics | |
| Form Factor | Desktop,Wall Mountable |
| Height | 9.02" (229.11 mm) |
| Width | 10.13" (257.30 mm) |
| Depth | 1.57" (39.88 mm) |
| Weight (Approximate) | 2.62 lb (1188.41 g) |
| Miscellaneous | |
| License Details | Unified Communications Manager,Unified Communications Manager Express,User Connect License |
| Energy Star | Yes |
| Warranty | |
| Limited Warranty | 1 Year |
FAQ
What does 'remanufactured' mean for this Cisco IP phone?
Remanufactured indicates this Cisco 8851 IP phone has been professionally refurbished to meet original performance specifications. The process typically includes thorough testing, cleaning, replacement of worn components, and quality verification. It comes with a one-year limited warranty, offering reliable functionality at a reduced cost compared to new units.
Does this IP phone support Power over Ethernet (PoE)?
Yes, the Cisco 8851 includes a PoE-capable RJ-45 port that supports IEEE 802.3af/at standards. This allows the phone to receive both data and electrical power over a single Ethernet cable, eliminating the need for a separate power adapter. PoE simplifies installation in locations without convenient power outlets and reduces cable clutter.
How many Ethernet ports does this phone have, and what are they used for?
This IP phone features two RJ-45 Ethernet ports. One port connects to your network switch or router, while the second port functions as a pass-through to connect another device like a computer. This daisy-chaining capability allows both the phone and a PC to share a single network drop without requiring an additional switch.
What Cisco call control systems is this phone compatible with?
The 8851 is compatible with Cisco Unified Communications Manager and Unified Communications Manager Express platforms. It requires appropriate user connect licenses for full functionality. This compatibility ensures seamless integration with existing Cisco voice infrastructures for enterprise-grade call handling, features, and management.
Can this IP phone be mounted on a wall?
Yes, the phone supports both desktop placement and wall mounting. The form factor includes keyhole slots on the back for secure wall installation. This flexibility makes it suitable for various environments including call centers, conference rooms, lobbies, or workspaces where desk space conservation is important.
What audio features does this VoIP phone include?
The phone incorporates a full-duplex speakerphone for hands-free conversations and built-in caller ID display. These features support professional business communications with clear audio quality. The VoIP technology ensures efficient voice transmission over IP networks with reduced latency compared to traditional analog systems.
How many SIP lines or accounts does this phone support?
Cisco 8851 IP Phone - Remanufactured - Desktop, Wall Mountable - VoIP - Unified Communications Manager, Unified Communications Manager (CP-8851-K9-RF) is best understood through its communication features, deployment fit, and connectivity profile, which help buyers confirm desk-phone suitability before rollout.
Does this model support PoE?
The listed telephony detail is Yes, which helps buyers confirm deployment fit for desk-phone and unified-communications environments.
| Qty | Price | Available |
|---|
