Cisco CP-6851-3PW-CE-K9 IP phone / endpoint
Brand: Cisco | Category: Accessories & Components
SKU: CSC-CP-6851-3PW-CE-K9 | Part #: CP-6851-3PW-CE-K9 | MPN: CP-6851-3PW-CE-K9
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About the Cisco CP-6851-3PW-CE-K9 IP phone / endpoint
The Cisco IP Phone 6851 (part number CP-6851-3PW-CE-K9) is validated for deployment on Cisco Unified Communications Manager (UCM) and Webex Calling platforms, making it a reliable choice for organizations standardizing on Cisco call control infrastructure. This model belongs to the Cisco IP Phone 6800 Series and delivers enterprise-grade voice communications across mid-market and large distributed environments.
The CP-6851-3PW-CE-K9 features a 3.5-inch greyscale backlit LCD display with 396 x 162 pixel resolution, four programmable line keys, and four available lines for flexible call handling. Audio quality is enhanced by wideband (HD Voice) support on both handset and speakerphone, paired with a full-duplex speakerphone for collaborative conversations. The phone includes two integrated 10/100/1000 Mbps Gigabit Ethernet ports for LAN and PC connectivity, an RJ-9 headset port, and support for G.711, G.722, and G.729a codecs. Security is built in via SRTP media encryption and TLS signalling. Power delivery is flexible—the included three-way power kit supports IEEE 802.3af Power over Ethernet (PoE) or external supply in Central Europe (CE) regions. Remote provisioning is enabled through TFTP and HTTP/HTTPS via Cisco UCM, and the phone communicates using the SIP protocol. Network architects and IT procurement teams will appreciate the balanced feature set and proven interoperability with major Cisco call platforms.
Deployment Scenarios
- Mid-office and executive workstations requiring four-line call management and HD Voice clarity
- Mixed Cisco UCM and Webex Calling environments across multi-site enterprises
- Branch offices and regional hubs where PoE or external power supplies are available
- Organizations standardizing on SIP-based protocols with mandatory SRTP and TLS encryption
- European deployments leveraging the CE-region power and provisioning specifications
For availability, specifications, and volume pricing on the CP-6851-3PW-CE-K9, submit your request for quotation through Omnixon Global.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-CP-6851-3PW-CE-K9 |
| Part Number | CP-6851-3PW-CE-K9 |
| Condition | New |
| Interface | 802.3af PoE |
| Manufacturer Part Number | CP-6851-3PW-CE-K9 |
| Product Series | Cisco IP Phone 6800 Series |
| Model | Cisco IP Phone 6851 |
| Display | 3.5-inch greyscale backlit LCD |
| Display Resolution | 396 x 162 pixels |
| Number of Lines | 4 |
| Programmable Line Keys | 4 |
| Audio Standard | Wideband (HD Voice) — handset and speakerphone |
| Speakerphone | Full-duplex speakerphone included |
| Headset Port | RJ-9 headset port |
| Network Interface | Two integrated 10/100/1000 Mbps Gigabit Ethernet ports (PC port and LAN port) |
| Power Options | IEEE 802.3af Power over Ethernet (PoE) or included external power supply (CE region) |
| Power Supply Included | Yes — 3-way power kit included |
| Call Control Compatibility | Cisco Unified Communications Manager (UCM), Webex Calling |
| Protocol | SIP |
| Region | Central Europe (CE) |
| Codec Support | G.711, G.722, G.729a |
| Security | SRTP media encryption, TLS signalling |
| Provisioning | TFTP, HTTP/HTTPS remote provisioning via Cisco UCM |
| XML Services | Supports Cisco XML API for custom applications and directory integration |
| Form Factor | Desktop |
| Color | Charcoal Dark Gray |
Frequently Asked Questions about Cisco CP-6851-3PW-CE-K9 IP phone / endpoint
What does the Cisco CP-6851-3PW-CE-K9 IP phone / endpoint do?
The Cisco CP-6851-3PW-CE-K9 IP phone / endpoint is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.