Cisco CP-7821-K9 IP phone / endpoint

Brand: Cisco | Category: Accessories & Components

SKU: CSC-CP-7821-K9 | Part #: CP-7821-K9 | MPN: CP-7821-K9

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The Cisco CP-7821-K9 IP phone delivers enterprise-grade voice communications with full-duplex speakerphone capability and wideband (HD) audio across both handset and speakerphone, ensuring crystal-clear conversations for distributed teams and branch offices. As a member of the Cisco IP Phone 7800 Series, this SIP-based endpoint combines reliable call control compatibility with Cisco Unified Communications Manager (UCM), Cisco Webex Calling, Cisco Unified CME, and SRST, making it an ideal choice for network engineers and IT procurement teams standardizing on Cisco's unified communications infrastructure.

The CP-7821-K9 features a 3.2-inch grayscale backlit LCD display with 396 x 162 pixel resolution and supports 2 line appearances with 2 programmable feature keys, complemented by fixed keys for Mute, Hold, Transfer, Conference, Redial, Messages, Applications, and Navigation Cluster controls. Connectivity is handled through two 10/100 Mbps Ethernet ports—one for PC passthrough (SW port) and one for network uplink (PC port)—with IEEE 802.3af Power over Ethernet (PoE) as standard and optional external power adapter support. Security is embedded throughout, including 802.1X port-based authentication, HTTPS provisioning, SRTP media encryption, and TLS signaling, alongside voice and data VLAN segmentation. The phone supports G.711, G.722, G.729a, and iLBC codecs, with provisioning via TFTP, HTTP, or HTTPS. An RJ-9 analog headset port enables seamless integration with existing wired headsets, while the adjustable desktop footstand accommodates various workspace layouts.

Typical Deployment Scenarios

• Branch office desk phones supporting mixed Cisco Unified Communications Manager and Webex Calling environments
• Contact center and customer service stations requiring dual-line presence and HD audio clarity
• Secure facilities leveraging 802.1X authentication and encrypted signaling for regulated industries
• Open desk environments where PC passthrough capability reduces cable management complexity
• Multi-site rollouts benefiting from TFTP and HTTPS provisioning flexibility

For detailed specifications, compatibility verification, or bulk procurement of the Cisco CP-7821-K9, contact Omnixon Global to submit a Request for Quote.