United States
CP-PWR-CUBE-4
$89.00$23.00
SAVE $66.00
CP-8851-K9
Original Stock
Ready to Ship
Cisco 8851 Series Unified IP Phone, 5-Line, Color Display, W...
FEATURED DEAL
Featured Deal
Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
CP-8851-K9
- Description:
- Cisco 8851 Series Unified IP Phone, 5-Line, Color Display, Wideband Audio, Charcoal
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0882658698422
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
100% Genuine Guaranteed
Global Delivery
Business Terms / PO Accepted
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
30-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
Frequently Bought Together
CP-PWR-CORD-NA
$12.00$3.00
SAVE $9.00
CP-PWR-CORD-CE
$12.00$4.00
SAVE $8.00
CP-PWR-CORD-UK
$12.00$4.00
SAVE $8.00
CP-PWR-INJ
$150.00$21.00
SAVE $129.00
263474-B23
$152.00$47.00
SAVE $105.00
Trusted by the Highest-Stakes Buyers
Federal agencies and Fortune 500 operations source through ORM Systems.
US Government & Defense
Enterprise Clients
Built Global. Stocked Local.
Regional teams and 25+ distribution partners keep stock near you and accountability in your time zone.
4Global Offices
25+Distribution Points
100+Countries Served
Buyer Protection on Every Order
Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
Verified By Federal Bodies
Every registration we claim is public record — check our federal contractor status yourself before you spend a dollar.
- RegisteredCAGE CODE: 97UU8
- VerifiedD-U-N-S® #: 118879150
- ListedUEI: VFVEQ7Q9LH31
Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
10+Years Operating
20,000+Clients Served
150K+SKUs Available
CP-8851-K9 Overview
The CP-8851-K9 is a charcoal Cisco IP Phone 8851 designed as an enterprise-grade desktop endpoint within the Cisco IP Phone 8800 Series portfolio. Built to enhance corporate collaboration and workplace efficiency, it features five programmable line keys, a high-resolution 5-inch color display, Gigabit Ethernet connectivity, integrated USB accessory support, and Bluetooth 3.0 EDR Class 1 functionality for flexible wireless headset and mobile phone audio workflows. The phone requires active registration with supported Cisco call-control environments, including Cisco Unified Communications Manager (CUCM 12.5 and later), Unified CME (10.0 and later), Business Edition 6000, Hosted Collaboration Solution (HCS), and compatible hosted calling services. It cannot function as a standalone device or generate a dial tone without a licensed call manager connection. Power is normally delivered via standard IEEE 802.3af/at Power over Ethernet (PoE), while an optional Cisco Power Cube 4 external power adapter is available separately for non-PoE desktop deployments.
Voice clarity is maintained across varied network environments using comprehensive audio codec support, including standard G.711, G.722, G.722.2, G.729ab, iLBC, iSAC, and OPUS protocols. These audio codecs deliver high-definition narrowband and wideband audio quality across enterprise collaboration networks. The integrated 5-inch 800 x 480 WVGA backlit color display presents clear visual feedback for call status tracking, soft-key prompts, corporate directories, menu settings, and interactive XML applications. Five programmable line keys support directory numbers, speed dials, shared line appearances, and custom feature access. An internal two-port 10/100/1000BASE-T Gigabit Ethernet switch connects both the phone and a co-located desktop PC through RJ-45 interfaces with IEEE 802.1Q voice and data VLAN separation. Peripheral integration includes a side USB port supplying 5V charging output, Bluetooth headset pairing capability, an RJ-9 wideband headset port, auxiliary Electronic Hookswitch (EHS) support, and a full-duplex speakerphone for hands-free calls.
The CP-8851-K9 deploys effectively across executive desks, shared-line positions, reception counters, and customer support workstations where Cisco call control manages extension routing, feature assignments, voicemail access, device pools, and system firmware updates. Monitored line capacity can be further expanded using optional Cisco 8800 Key Expansion Modules, while an optional wall-mount kit provides secure placement in space-constrained areas. ORM Systems supplies this endpoint in both brand-new and certified refurbished conditions. Every refurbished unit undergoes a complete factory reset process to remove prior registration data, directory entries, and previous user settings. Comprehensive testing protocols evaluate keypad responsiveness, display backlight uniformity, Ethernet link stability, audio path clarity, headset functionality, and PoE power negotiation. Request a custom quote today for single unit replacements, fleet additions, or large-scale desktop standardization across your Cisco voice estate.
CP-8851-K9 price is $295.96, a 59% saving from the Cisco list price of $721.86. CP-8851-K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for CP-8851-K9 for additional pricing. Browse the full 8800 Series Ip Phones series or explore all Cisco products.
CP-8851-K9 Specifications
- Product Type
- IP Phone
- Phone Type
- Desk
- Product Name
- Cisco IP Phone 8851
- Manufacturer Part Number
- CP-8851-K9
- Brand
- Cisco
- Series
- Cisco 8800 Series
- Use Case
- Enterprise / Small Business / Call Center / Home Office
- Platform Certification
- Generic SIP
- Compatible Platforms
- Cisco UCM 12.5+; Unified CME 10.0+; BE6000 8.6.2+; HCS 8.6.2+; third-party hosted call control
- Connectivity Type
- Wired / Bluetooth
- Operating System
- Cisco IP Phone firmware
- Software
- Cisco IP Phone 8800 Series firmware
- Protocols Supported
- SIP; SDP; IPv4; IPv6; DHCP; DNS; TFTP; HTTPS; VLAN; RTP; RTCP; CDP; LLDP-MED
- Codec Support
- G.711; G.722; G.722.2; G.729ab; iLBC; iSAC; OPUS
- Security Features
- Secure boot; MIC; LSC; TLS signaling; SRTP media; HTTPS; SSH; 802.1X EAP-FAST and EAP-TLS
- Display Type
- Color Display
- Display Details
- 5 in WVGA backlit color; 800 x 480; 24-bit color
- Buttons and Keys
- 5 programmable line keys; soft keys; fixed feature keys
- Audio Features
- Automatic gain control; comfort noise generation; silence suppression; acoustic echo cancellation; dynamic noise reduction
- Speakerphone Type
- Full-Duplex
- HD Voice Support
- HD Voice Supported
- Answering Machine
- No Answering Machine
- Camera Support
- Camera Not Built-In
- Expansion Module Support
- Up to two Cisco IP Phone 8800 Key Expansion Modules
- Headset Support
- RJ-9 analog; USB; Bluetooth; auxiliary electronic hookswitch
- Ethernet Technology
- Gigabit Ethernet
- Network Ports
- 2 RJ-45 10/100/1000BASE-T ports
- PoE Support
- PoE Supported
- Power Source
- PoE Powered / AC Adapter
- Power Details
- IEEE 802.3af/at PoE; class 3 before V08; class 4 V08 and later; 48V DC input
- Wall Mountable
- Wall Mountable
- Management
- On-Premises Managed / Auto Provisioning Supported
- Manufacturer Warranty
- Cisco standard 1-year replacement warranty
- Included Components
- Cisco IP Phone 8851 charcoal
- Operating Temperature
- 32 to 104 F (0 to 40 C)
- Compliance
- Safety: UL 60950 / EMC: FCC Part 15 / Telecom: HAC
- Height
- 9.02 in
- Width
- 10.13 in
- Depth
- 1.57 in
- Weight
- 1.19 kg
CP-8851-K9 Use Case
Access Layer Desk Voice Endpoint
CP-8851-K9 sits at the user desk and terminates Cisco IP voice service from an access switch through its Ethernet network port. The phone receives PoE from the switch, places the endpoint in the voice VLAN, and presents a PC pass-through path through its integrated Gigabit Ethernet switch. Administrators assign five programmable line keys for extensions, shared lines, and speed dials. The result is a standardized desk voice endpoint with clear VLAN separation, powered access, and consistent user call handling.
Unified Communications Registration Point
The phone registers into a Cisco Unified Communications environment as a managed 8800 Series endpoint for users who need five line appearances and color-screen call visibility. CP-8851-K9 receives firmware, directory access, soft-key behavior, and feature assignments from the call-control platform. Network teams map device pools, extension settings, voicemail access, and user profiles before service activation. The result is a centrally administered desk phone that keeps voice policy, user identity, and calling features under one operational control plane.
Shared-Line Operations Position
CP-8851-K9 operates at desks where staff monitor multiple directory numbers, transfer calls, and use programmed speed dials throughout the day. The five programmable line keys handle shared lines and feature access, while USB, Bluetooth, and RJ-9 headset options support different user working patterns. Optional Cisco 8800 key expansion modules extend button capacity when the position requires more monitored lines. The result is a controlled shared-line workstation with predictable call routing, visible line status, and fewer manual lookup steps.
Speak To a Hardware Specialist in Your Region
Mon–Fri: [09:00-16:00]
Avg. response under 30 mins
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
L
Lucas Turner
5
The CP-8851-K9 is an excellent phone for business use. It offers exceptional sound quality, is easy to set up, and integrates smoothly into our system.
G
Grace Lewis
4
We use the CP-8851-K9 for daily communication. It delivers excellent audio quality, is reliable, and works perfectly with our Cisco network.
D
David Roberts
4
The CP-8851-K9 is perfect for our office. It provides great call quality, easy integration, and is a reliable tool for communication.
S
Sophia White
5
This phone is a great choice. The CP-8851-K9 delivers crystal-clear audio, easy setup, and seamless integration into our system.
B
Benjamin Harris
5
The CP-8851-K9 is a reliable phone. It offers superb sound quality, easy installation, and works perfectly with our office network.
Questions & Answers
What is Cisco CP-8851-K9?
Cisco CP-8851-K9 is a Cisco 8851 Series Unified IP Phone for business voice communications. It provides five programmable line keys, a 5-inch color display, wideband audio, Gigabit Ethernet, USB connectivity, and charcoal housing. It is designed for desk users who need reliable Cisco IP telephony with clear audio, call handling keys, and integration with Cisco collaboration platforms.
What does the CP-8851-K9 model number identify?
CP-8851-K9 identifies the Cisco IP Phone 8851 hardware model in the Cisco 8800 Series. The 8851 sits above basic 8800 desk phones by adding USB and Bluetooth headset support while keeping the five-line color-display format. The K9 suffix is commonly used by Cisco for hardware that supports Cisco security and encryption features.
Is CP-8851-K9 a VoIP phone or an analog phone?
CP-8851-K9 is a VoIP desk phone, not an analog telephone. It connects to an IP network through Ethernet and registers with Cisco call control platforms for voice services. The phone is used with enterprise IP telephony systems, supports wideband voice codecs, and provides fixed call-control keys for hold, transfer, conference, messaging, directories, and applications.
Where does Cisco CP-8851-K9 sit in the Cisco 8800 Series lineup?
Cisco CP-8851-K9 sits in the mid-to-upper range of the Cisco 8800 Series desk phone family. It offers a color display and five programmable line keys like the 8841, then adds USB and Bluetooth headset support. It does not include the integrated video camera found on video-focused models such as the Cisco CP-8865-K9.
How many line keys does CP-8851-K9 provide?
CP-8851-K9 provides five programmable line keys. These keys support directory numbers, speed dials, and common telephony features depending on the Cisco call-control configuration. The phone also supports multiple calls per line, so administrators assign the keys based on user role, extension requirements, shared lines, hunt groups, and everyday call-handling needs.
What display does Cisco CP-8851-K9 use?
Cisco CP-8851-K9 uses a 5-inch widescreen VGA color display with 800 x 480 pixel resolution and 24-bit color. The backlit screen presents call status, directories, applications, soft keys, and XML-based services. This display gives desk users more visual context than grayscale entry models while keeping the device focused on business voice communication.
Does CP-8851-K9 support Gigabit Ethernet?
CP-8851-K9 supports an integrated 10/100/1000 Ethernet switch for network and PC connectivity. The phone connects to the LAN through the network port, while the PC port allows a workstation to share the same desk network drop. This helps preserve cabling capacity at the access layer while maintaining Gigabit Ethernet handoff for connected endpoints.
What audio features are included with CP-8851-K9?
CP-8851-K9 supports wideband audio using G.722 on the handset, speakerphone, and headset path. The phone also includes a full-duplex speakerphone and dedicated acoustic keys for headset, speaker, and mute functions. These features suit desk users who handle frequent internal calls, customer calls, conferences, and hands-free conversations through Cisco IP telephony.
Does Cisco CP-8851-K9 support Bluetooth and USB headsets?
Cisco CP-8851-K9 supports Bluetooth headset connectivity and includes USB connectivity for supported accessories. It also provides an RJ-9 analog headset port for wired headset use. This gives procurement teams flexibility when standardizing desk phones across users with different headset preferences, call volumes, and workplace requirements.
What power options does CP-8851-K9 support?
CP-8851-K9 supports Power over Ethernet using IEEE 802.3af and is commonly listed as PoE Class 3. It also supports external power through compatible Cisco power accessories when PoE is not available. Network teams normally power the phone from access switches, which simplifies desk deployment and reduces the need for local power adapters.
What is Cisco CP-8851-K9 used for?
Cisco CP-8851-K9 is used as an enterprise desk phone for users who need dependable IP voice, shared lines, speed dials, directory access, voicemail access, and headset support. It fits office desks, reception points, support desks, meeting support areas, and call-heavy roles where Cisco Unified Communications manages extensions, policies, and call routing.
What size of business environment suits CP-8851-K9?
CP-8851-K9 suits small, medium, and large business environments using Cisco IP telephony. It works well where teams need a consistent desk phone standard with five line keys, color display, wideband audio, and Gigabit Ethernet. The model is practical for phased rollouts because it belongs to the widely deployed Cisco 8800 Series family.
Is CP-8851-K9 suitable for shared-line or reception use?
CP-8851-K9 is suitable for many shared-line and reception-style deployments when five programmable keys are enough for the call flow. Administrators assign shared extensions, speed dials, transfer targets, and feature keys from the call-control platform. For higher button density, the phone supports optional Cisco IP Phone 8800 Key Expansion Modules.
Does CP-8851-K9 work for headset-heavy users?
CP-8851-K9 works well for headset-heavy users because it supports RJ-9, USB, and Bluetooth headset options. The phone also includes wideband audio and fixed headset controls for daily call handling. This makes the model useful for staff who spend much of the day on calls but do not require an integrated video phone.
Which Cisco platforms are compatible with CP-8851-K9?
CP-8851-K9 is designed for Cisco collaboration environments, including Cisco Unified Communications Manager and Cisco hosted or on-premises call-control deployments that support the 8800 Series. Compatibility depends on firmware, licensing, and call-control version. Procurement teams normally verify the exact firmware track and platform support before ordering mixed Cisco desk phone fleets.
Does CP-8851-K9 support third-party hosted call control?
Cisco documentation states that the IP Phone 8851 is supported on third-party hosted call-control services, subject to the correct firmware and provider support. CP-8851-K9 should therefore be checked against the intended hosted voice platform before purchase. The exact deployment path depends on firmware type, SIP configuration, provisioning method, and service-provider certification.
Can CP-8851-K9 use Cisco 8800 Key Expansion Modules?
CP-8851-K9 supports optional Cisco IP Phone 8800 Key Expansion Modules, with support for up to two modules depending on platform and configuration. These modules add line and feature key capacity for reception desks, assistants, and shared-line users. The required module, power design, and firmware support should be validated before deployment.
Which network standards does CP-8851-K9 support?
CP-8851-K9 supports enterprise IP networking features used in Cisco voice deployments, including Ethernet LAN connectivity, PoE, VLAN-based voice access, and Cisco discovery or management mechanisms depending on firmware and platform. It is normally deployed on access switches that provide voice VLANs, QoS trust boundaries, and Power over Ethernet for desk endpoints.
How does CP-8851-K9 compare with CP-8841-K9?
CP-8851-K9 and CP-8841-K9 are both Cisco 8800 Series color desk phones with five programmable line keys. CP-8851-K9 adds USB connectivity and Bluetooth headset support, which makes it stronger for users who need more accessory flexibility. CP-8841-K9 is usually selected where standard color-display desk calling is enough without those added connectivity options.
How does CP-8851-K9 compare with CP-8861-K9?
CP-8851-K9 and CP-8861-K9 both target business users who need advanced Cisco 8800 Series desk-phone features. CP-8861-K9 is positioned above the 8851 and is commonly selected where additional premium connectivity or higher-end desk-phone requirements apply. CP-8851-K9 remains a practical choice where five lines, color display, USB, Bluetooth, and Gigabit Ethernet meet the requirement.
How does CP-8851-K9 compare with CP-8865-K9?
CP-8851-K9 is a voice-focused IP phone, while CP-8865-K9 is a Cisco 8800 Series video phone with an integrated 720p HD camera. Buyers choose CP-8851-K9 for desk voice, headset use, and mobile voice integration. CP-8865-K9 suits users who require video calling directly from the desk endpoint.
How does CP-8851-K9 compare with CP-8811-K9?
CP-8851-K9 offers a richer user experience than CP-8811-K9 because it provides a color display, five programmable line keys, Gigabit Ethernet, USB, and Bluetooth headset support. CP-8811-K9 is a simpler entry-level Cisco 8800 Series desk phone. CP-8851-K9 is better suited for users who need more visible call control and accessory flexibility.
Is Cisco CP-8851-K9 available new or refurbished?
Cisco CP-8851-K9 is commonly sourced in both new and refurbished conditions through enterprise IT hardware resellers. Availability depends on current channel supply, regional stock, and required configuration. ORM Systems can list suitable condition options for buyers who need matching phones for an existing Cisco 8800 Series estate or a larger refresh project.
What is the price of CP-8851-K9?
CP-8851-K9 pricing depends on condition, quantity, warranty option, lead time, and market availability. Refurbished units usually provide a lower-cost route for expanding an existing Cisco voice estate, while new units may suit standardized procurement policies. Buyers should request a live quote to confirm current price, stock position, and volume pricing.
Is CP-8851-K9 still in production?
Cisco 8800 Series lifecycle status should be checked against Cisco’s current end-of-sale and end-of-life notices before purchase. CP-8851-K9 remains widely deployed in enterprise Cisco voice environments, but procurement teams should confirm whether the required condition, firmware, and support path match their deployment plan before ordering replacement or expansion units.
What lead time should buyers expect for CP-8851-K9?
CP-8851-K9 lead time depends on order quantity, condition, testing requirements, and destination. Single-unit replacement orders may move faster when stock is available, while larger rollout quantities may require staged sourcing and validation. Buyers should confirm the required delivery date, firmware requirement, and accessory needs when requesting a quote.
Are bulk discounts available for Cisco CP-8851-K9?
Bulk pricing is often available for Cisco CP-8851-K9 when buyers order multiple units for office refreshes, user expansion, or spare inventory. Quantity, condition, warranty level, and delivery schedule affect the final quote. ORM Systems can support procurement teams that need matched batches of Cisco 8851 phones for consistent deployment.
Can CP-8851-K9 be ordered with accessories?
CP-8851-K9 may be ordered with compatible accessories depending on stock and deployment needs. Common requirements include handsets, cords, stands, power accessories, wall-mount kits, headsets, and Cisco 8800 Key Expansion Modules. Buyers should specify whether phones are needed as base units only or as deployment-ready bundles for desks.
What warranty options are available for CP-8851-K9 from ORM Systems?
ORM Systems typically supplies enterprise hardware such as CP-8851-K9 with warranty options that vary by condition and order terms. Refurbished and new units should be quoted with the applicable warranty period clearly stated. Buyers should confirm coverage length, replacement process, and any accessory coverage before placing large Cisco IP phone orders.
Are refurbished CP-8851-K9 phones tested before dispatch?
Refurbished CP-8851-K9 phones should be tested before dispatch to confirm power, display, keypad, audio path, Ethernet ports, headset ports, and general physical condition. Testing is especially important for VoIP endpoints because small issues affect daily user experience. Buyers should request confirmation of testing standards when purchasing refurbished Cisco 8851 units.
What compliance or accessibility features apply to CP-8851-K9?
Cisco IP Phone 8851 includes business desk-phone features such as hearing-aid-compatible handset support and wideband-capable audio paths. Cisco also lists EnergyWise support and Energy Star qualification for the model. Compliance and accessibility requirements should be checked against the exact regional model, firmware, and procurement policy before deployment.
How is CP-8851-K9 first configured?
CP-8851-K9 is first connected to the voice network, powered through PoE or a compatible power adapter, and provisioned through the selected call-control platform. Administrators normally assign extension settings, device pool, firmware, line keys, soft keys, voice VLAN behavior, and user features before handing the phone to the desk user.
Does CP-8851-K9 require licenses or software?
CP-8851-K9 normally requires the correct Cisco call-control licensing, firmware, and device configuration to operate in a managed Cisco collaboration environment. The required license depends on the platform, deployment model, and user profile. Buyers should verify Cisco Unified Communications Manager, hosted call-control, or third-party SIP requirements before ordering phones.
What network prerequisites are needed for CP-8851-K9?
CP-8851-K9 deployment normally needs Ethernet access, PoE or compatible external power, voice VLAN design, DHCP or provisioning services, DNS where required, and QoS policies for voice traffic. The access switch should support the intended power and VLAN configuration. Administrators should also verify firmware compatibility with the selected call-control platform.
Where can buyers purchase Cisco CP-8851-K9 in the UK?
Buyers can purchase Cisco CP-8851-K9 in the UK through ORM Systems for business IT hardware procurement. The phone can be quoted for replacement units, desk refreshes, office expansions, or larger Cisco 8800 Series rollouts. Buyers should provide quantity, condition preference, warranty expectations, and delivery location for accurate pricing.
Does ORM Systems ship CP-8851-K9 internationally?
ORM Systems can support international procurement requests for Cisco CP-8851-K9 depending on destination, stock, export requirements, and courier availability. International buyers should confirm quantity, condition, delivery address, and any regional compliance or power accessory needs before ordering. This helps align the supplied Cisco 8851 phones with the target deployment country.