CP-8851-K9 – 5-Line IP Phone – USB and Bluetooth – Enhanced UCL
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CP-8851-K9 Description
CP-8851-K9 is the Cisco IP Phone 8851 charcoal desk phone in the Cisco IP Phone 8800 Series, built for Cisco voice deployments that need five programmable line keys, a 5-inch color display, Bluetooth headset support, a side USB port, and Gigabit Ethernet at the user desk.
For same-model orders, CP-8851-K9 maps to the charcoal 8851 path while CP-8851-W-K9 maps to the white 8851 path. For radio-sensitive environments, CP-8851-K9 should also be separated from CP-8851NR-K9, because Cisco positions the 8851NR as the no-radio 8851 variant while the standard 8851 data sheet documents Bluetooth 3.0 EDR Class 1 support.
Quote review should verify the Cisco ordering PID CP-8851-K9=, Enhanced User Connect License coverage for Cisco Unified Communications Manager, the PoE class expected for the hardware revision, any Key Expansion Module plan, and whether local power needs Cisco Power Cube 4 with the matching regional AC cord.
Quick Specs
|
Parameter |
Specification |
|---|---|
|
Product ID |
CP-8851-K9 |
|
Cisco ordering ID |
CP-8851-K9= |
|
Product family |
Cisco IP Phone 8800 Series |
|
Product type |
Cisco IP Phone 8851 desk phone |
|
Color |
Charcoal |
|
Programmable line and feature keys |
5 |
|
Display |
5 in. 800 x 480 24-bit color WVGA display |
|
USB |
Side USB port with up to 500 mA at 5V output |
|
Bluetooth |
Bluetooth 3.0 EDR Class 1 up to 66 ft (20 m) |
|
Integrated switch |
Internal 2-port 10/100/1000BASE-T Cisco Ethernet switch |
|
Key expansion module support |
Up to two Cisco IP Phone 8800 Key Expansion Modules |
|
PoE class |
IEEE PoE Class 3 before hardware V08 and Class 4 for hardware V08 and above |
|
CUCM license |
Enhanced User Connect License |
Application Scenarios
Deploy CP-8851-K9 where the desk standard needs a Cisco 8800 Series audio phone with Bluetooth headset support, a side USB charging port, and a color 5-inch display.
Use this SKU when a single access-switch connection must serve both the phone and a co-located PC through the Cisco-documented internal Gigabit Ethernet switch.
Select CP-8851-K9 for attendant or shared-line roles that may need Cisco IP Phone 8800 Key Expansion Modules, then confirm the phone hardware revision and PoE class before releasing the BOM.
Product Comparison
|
Parameter |
CP-8851-K9 |
CP-8851-W-K9 | |
|---|---|---|---|
|
Product family |
Cisco IP Phone 8800 Series |
Cisco IP Phone 8800 Series |
Cisco IP Phone 8800 Series |
|
Cisco ordering ID |
CP-8851-K9= |
CP-8851-W-K9= |
CP-8851NR-K9= |
|
Cisco model description |
Cisco IP Phone 8851, Charcoal |
Cisco IP Phone 8851, White |
Cisco IP Phone 8851NR, Charcoal |
|
Product type |
Cisco IP Phone 8851 desk phone |
Cisco IP Phone 8851 desk phone |
Cisco IP Phone 8851NR desk phone |
|
Color |
Charcoal |
White |
Charcoal |
|
Radio profile |
Bluetooth 3.0 EDR Class 1 |
Bluetooth 3.0 EDR Class 1 |
No-radio 8851NR variant |
|
Programmable line and feature keys |
5 |
5 |
5 |
|
Display |
5 in. 800 x 480 24-bit color WVGA |
5 in. 800 x 480 24-bit color WVGA |
5 in. 800 x 480 24-bit color WVGA |
|
USB |
Side USB port |
Side USB port |
Side USB port |
|
Integrated switch |
10/100/1000BASE-T internal 2-port Cisco Ethernet switch |
10/100/1000BASE-T internal 2-port Cisco Ethernet switch |
10/100/1000BASE-T internal 2-port Cisco Ethernet switch |
|
Key expansion module support |
Up to two Cisco IP Phone 8800 KEMs |
Up to two Cisco IP Phone 8800 KEMs |
Up to two Cisco IP Phone 8800 KEMs |
|
CUCM license |
Enhanced User Connect License |
Enhanced User Connect License |
Enhanced User Connect License |
- In a CP-8851-K9 vs CP-8851-W-K9 comparison, the documented difference is color: CP-8851-K9 follows the charcoal Cisco IP Phone 8851 order path, while CP-8851-W-K9 follows the white 8851 order path.
- The CP-8851-K9 vs CP-8851NR-K9 difference is the radio profile. CP-8851-K9 uses the standard 8851 data sheet with Bluetooth support, while CP-8851NR-K9 is the Cisco IP Phone 8851NR no-radio variant.
- For buyers deciding which model to choose, the CP-8851-K9 comparison should first confirm desk color, then confirm whether Bluetooth radio support is allowed or whether the 8851NR path is required.
Selection Guide
1. Choose CP-8851-K9 for the charcoal 8851 with Bluetooth
Select CP-8851-K9 when the bill of materials calls for the standard Cisco IP Phone 8851 in charcoal with Bluetooth headset support and a side USB port.
2. Use CP-8851-W-K9 for a white same-model desk standard
Move to CP-8851-W-K9 only when the same Cisco 8851 feature profile is needed in white for a room design or endpoint color standard.
3. Use CP-8851NR-K9 for no-radio requirements
Review CP-8851NR-K9 when the deployment policy requires the Cisco 8851 no-radio variant instead of the standard Bluetooth-capable 8851.
4. Confirm power and entitlement before quoting
Check the hardware revision for PoE Class 3 or Class 4 planning, verify Enhanced UCL for CUCM, and add Cisco Power Cube 4 with the correct country cord only when local AC power is needed.
Ordering Checklist
|
Check Item |
Confirmation Needed |
Ordering Risk |
|---|---|---|
|
Cisco PID |
CP-8851-K9= for Cisco IP Phone 8851, Charcoal |
Prevents substitution with the white CP-8851-W-K9= or the no-radio CP-8851NR-K9= |
|
Radio policy |
Standard 8851 data sheet documents Bluetooth 3.0 EDR Class 1 |
Avoids ordering a Bluetooth-capable phone where a no-radio 8851NR endpoint is required |
|
Voice entitlement |
Enhanced User Connect License for Cisco Unified Communications Manager |
Keeps the phone order aligned with the documented CUCM license requirement |
|
PoE planning |
PoE Class 3 before hardware V08 and Class 4 for hardware V08 and above |
Avoids KEM power planning errors when one or two expansion modules are attached |
|
Local power path |
Cisco Power Cube 4 with the corresponding AC country cord for non-PoE deployments |
Separates PoE desks from local-power desks in the quote |
|
Desk Ethernet path |
Internal 2-port 10/100/1000BASE-T Cisco Ethernet switch |
Confirms the LAN and co-located PC cabling plan before deployment |
Product Front
The following table describes the Cisco IP Phone 8800 Series Buttons.
The Cisco IP Phone 8800 Series has two distinct hardware types:
- Cisco IP Phones 8811, 8841, 8851, 8851NR, and 8861—do not have a camera.
- Cisco IP Phones 8845, 8865, and 8865NR—have a built-in camera.
|
1 |
Incoming call or voicemail indicator |
|
2 |
Camera (Cisco IP Phone 8845 and 8865) |
|
3 |
Feature and session buttons |
|
4 |
Softkeys |
|
5 |
Back, Navigation cluster, and Release |
|
6 |
Hold, Transfer, and Conference |
|
7 |
Headset, Speakerphone, and Mute |
|
8 |
Voicemail, Applications, and Directory |
|
9 |
Volume |
Specifications
Packaging weight and dimensions included:| Weight | 2.16 kg |
|---|---|
| Dimensions | 28 × 25 × 12 cm |
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Brand | Cisco | Product ID | CP-8851-K9 |
| Cisco ordering ID | CP-8851-K9= | Product family | Cisco IP Phone 8800 Series |
| Product type | Cisco IP Phone 8851 desk phone | Color | Charcoal |
| Same-model color SKU | CP-8851-W-K9= is Cisco IP Phone 8851, White | No-radio comparison SKU | CP-8851NR-K9= is Cisco IP Phone 8851NR, Charcoal |
| Programmable line and feature keys | 5 | Display | 5 in. 800 x 480 24-bit color WVGA display |
| USB | Side USB port with up to 500 mA at 5V output | Bluetooth | Bluetooth 3.0 EDR Class 1 up to 66 ft (20 m) |
| Bluetooth profiles | Hands-Free Profile and Phone Book Access Profile | Mobile integration | Cisco Intelligent Proximity audio path, call history, and contact synchronization |
| Ethernet switch | Internal 2-port 10/100/1000BASE-T Cisco Ethernet switch | PC connectivity | Single LAN connection for phone and co-located PC |
| Key expansion module support | Up to two Cisco IP Phone 8800 KEMs | Expansion button range | From 5 or 10 line buttons to 61 or 66 line buttons with KEMs |
| PoE class | IEEE PoE Class 3 before hardware V08 and Class 4 for hardware V08 and above | PoE standards | Compatible with IEEE 802.3af and IEEE 802.3at switch blades |
| Power input rating | 0.917A, 48V DC | Local power option | Cisco IP Phone Power Cube 4 with corresponding AC country cord |
| CUCM support | Cisco Unified Communications Manager 12.5 and later | Unified CME support | 10.0 and later through fast track |
| BE 6000 support | 8.6.2, 9.1.2, 10.5.2, 11.0 and later | HCS support | 8.6.2 and later using supported UCM versions |
| CUCM license | Enhanced User Connect License | Signaling protocol | Session Initiation Protocol |
| Codec support | G.711, G.722, G.722.2, G.729ab, iLBC, iSAC, OPUS | QoS and discovery | Cisco Discovery Protocol, 802.1Q/p, LLDP-MED, and switch speed auto-negotiation |
| Headset control | Electronic hookswitch through USB, auxiliary port, or Bluetooth pairing | Security slot | Kensington Security Slot compatible |
| Foot-stand positions | 35 degrees and 50 degrees | Wall mounting | Optional wall-mount kit available separately |
| Dimensions | 9.02 x 10.13 x 1.57 in. excluding foot stand | Weight | 2.62 lb (1.19 kg) with handset |
| Operating temperature | 32 to 104 degrees F (0 to 40 degrees C) | Operating humidity | 10% to 90%, noncondensing |
| Phone casing composition | Polycarbonate ABS textured plastic | Bezel | Black bezel included, optional silver bezel orderable separately |
Get More Information
Need pricing, stock, or shipping details for the CP-8851-K9 ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
Quality Certifications
Customer Reviews
Questions & Answers
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Who is CP-8851-K9 built for?
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How is CP-8851-K9 different from CP-8841-K9?
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Does CP-8851-K9 support a key expansion module?
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What is the USB port on CP-8851-K9 used for?
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Does CP-8851-K9 support Bluetooth?
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Is CP-8851-K9 a video phone?
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What power does CP-8851-K9 need?
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Can CP-8851-K9 work with third-party SIP systems?
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Got prompt help for paperwork requests our finance team needed.
When we had a question after delivery, they responded the same day. Would have liked a tracking update sooner, but the product is great.
They offered to verify compatibility before shipping. Went above and beyond. Invoice formatting was a bit different from what our AP system expects, but workable.
Deployed 20 of these. KEM support is great for reception.
Solid phone. Buttons feel good. Shipping was fast.