Cisco IP Phone 7821 (CP-7821-K9) — Enterprise-Grade 2-Line VoIP Phone

Save up to 70% over new with this professionally refurbished Cisco 7821 IP Phone. Ideal for offices, call centers, and enterprise UC deployments, the CP-7821-K9 delivers crystal-clear wideband audio, a high-resolution backlit display, and secure SIP communications — all backed by Reef Telecom's industry-leading 10-year warranty.

Key Specifications

• 2 Programmable Line/Feature Keys — supports directory numbers or speed dial
• 3.5" Greyscale Display — 396 x 162 pixels with white backlight
• Wideband Audio (G.722) — superior voice quality via handset, speakerphone, or headset
• Dual 10/100 Ethernet Ports — integrated Ethernet switch for single-cable desktop deployment
• PoE Class 1 (IEEE 802.3af) — power and data over one cable; Energy Star certified
• SIP Protocol Support — with SRTP encryption and TLS signaling security
• Full-Duplex Speakerphone — hands-free conferencing built in
• RJ9 Headset Port + EHS Support — flexible headset connectivity options
• Fixed Function Keys — one-touch messaging, directory, hold, transfer, and conference
• Wall Mountable — includes dual-position foot stand for desk or wall use

Compatibility

• Cisco Unified Communications Manager (CUCM) 8.5.1 and later
• Cisco Business Edition 6000 — 8.6.2 and later
• Cisco Hosted Collaboration Solution (HCS)
• Cisco Unified Survivable Remote Site Telephony (SRST) 8.x+
• Third-party SIP call control platforms
• Requires Basic User Connect License (UCL)

Why Buy from Reef Telecom?

Every refurbished Cisco 7821 is thoroughly inspected, tested, and restored to full working condition. Your purchase includes a 10-year warranty and free shipping on orders over $300. Reduce e-waste and IT costs without sacrificing quality — choose Reef Telecom for sustainable, enterprise-ready telecom equipment.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.