The Cisco 8821 is a rugged, wireless VoIP handset designed for on-the-go professionals. Featuring a 2.4-inch color LCD (240×320 resolution), it supports Wi-Fi (802.11a/b/g/n/ac), Bluetooth, and multiple voice codecs (G.711a/u, G.722, G.729a/b, iLBC). It allows for six lines, speakerphone use, conferencing, intercom, and common call services like hold, forward, and caller ID.
Key Features:
- Connectivity: Bluetooth, USB, 3.5mm headset jack
- Display: 2.4″ LCD, 240 x 320 resolution
- Battery: 2060mAh Li-ion, up to 13 hours talk time, 240 hours standby
- Security: TLS encryption, SIP protocol support
- Audio: Wideband audio, voice message indicator, speakerphone
- Dimensions: 5.2″ H x 2.2″ W x 0.7″ D, 5.7 oz
- Included Accessories: Battery, country clip, power adapter, and cable
- Certifications: Not ENERGY STAR, EPEAT, or TCO certified


