The Cisco CP-7821-K9= IP Phone is a cost-effective, business-class VoIP phone designed to deliver reliable voice communication, intuitive operation, and enterprise-grade performance for small to large organizations. Combining modern design, advanced telephony features, and crystal-clear HD audio, it provides a high-quality user experience ideal for office professionals, reception areas, and common workspaces.
Equipped with a 3.5-inch grayscale backlit display, the CP-7821-K9= ensures clear visibility of call details, caller ID, and feature menus even in low-light environments. The intuitive navigation cluster and context-sensitive soft keys make call handling simple and efficient.
The phone supports two programmable line keys, allowing users to handle multiple calls, extensions, or speed dials with ease. It delivers exceptional sound quality through wideband audio (G.722) technology on both the handset and speakerphone, ensuring clear, natural voice communication across every call.
Built with flexibility and efficiency in mind, the CP-7821-K9= includes dual 10/100 Ethernet ports for network and PC connectivity, and it supports IEEE 802.3af Power over Ethernet (PoE), eliminating the need for separate power adapters and reducing cable clutter.
The device integrates seamlessly with Cisco Unified Communications Manager (CUCM) and Cisco Business Edition systems, supporting secure SIP-based communication with strong encryption (TLS and SRTP). This makes it ideal for organizations seeking scalable, secure, and centralized communication management.
Designed with energy efficiency and sustainability in mind, the phone supports Cisco EnergyWise technology and meets Energy Star® standards, helping reduce operational costs and environmental impact.
Overall, the Cisco CP-7821-K9= IP Phone offers dependable performance, professional design, and essential features for high-quality business communication — making it a perfect choice for modern workplaces looking for reliability and value.
Key Features
- 2-line support for efficient call management and multitasking
- 3.5-inch backlit grayscale display for enhanced visibility
- Wideband HD audio (G.722) for superior sound clarit
- Dual 10/100 Ethernet ports for LAN and PC connectivity
- Power over Ethernet (PoE) for simplified installation
- Full-duplex speakerphone with acoustic echo cancellation
- Secure SIP signaling with TLS and SRTP encryption
- Compatible with Cisco Unified Communications Manager
- Energy-efficient design with Cisco EnergyWise suppor
- Ideal for small to medium business and enterprise users
| Category | Specification |
|---|---|
| Model | Cisco CP-7821-K9= |
| Product Type | 2-Line Business-Class IP Phone |
| Display | 3.5-inch (396 × 162 pixels) backlit grayscale display |
| Lines / Keys | 2 programmable line keys |
| Soft Keys | 4 context-sensitive soft keys |
| Audio Codec Support | G.711a/u, G.722 (wideband), G.729a, iLBC |
| Audio Features | Wideband HD audio, Acoustic Echo Cancellation, Comfort Noise Generation |
| Speakerphone | Full-duplex with HD voice |
| Headset Support | Dedicated RJ-9 headset port |
| Network Ports | 2 × 10/100 Fast Ethernet ports (LAN and PC) |
| Power Options | IEEE 802.3af Power over Ethernet (PoE) or optional external power adapter |
| Security | Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) |
| Management | Cisco Unified Communications Manager (CUCM) / Cisco Business Edition / Cisco HCS |
| Mounting Options | Desktop or wall mount |
| Operating Temperature | 0°C – 40°C (32°F – 104°F) |
| Dimensions (W × D × H) | 207 × 206 × 28 mm |
| Weight | Approx. 0.9 kg |
| Compliance | Energy Star, Cisco EnergyWise |
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