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Product Description

IP Phone 7821 supporting two lines

Increase Productivity with Clear Communications.

Deploy reliable and highly secure voice communications with the Cisco IP Phone 7821. This full-featured phone is easy to use and easy on your budget. This endpoint supports wideband audio for superior voice communications quality and advanced IP telephony features to make your business calls more efficient and productive.

The Cisco IP Phone 7821 is a two-line endpoint that is designed for information workers and managers. This phone is ideal for:

- Customers who currently use traditional analog or digital phones but want to move to IP telephony.
- Organizations that want to expand their voice communications investment by using Cisco Unified Communications.


Design
Mounting Desk/Wall
Wall mountable Yes
Case material Polycarbonate
Product colour Black, Silver
Handset type Wired handset
Product type IP Phone
Phone features
Caller ID Yes
Do not disturb function Yes
Call hold Yes
Conference call Yes
Call waiting Yes
Distinctive ring Yes
Speed dialling Yes
Call forwarding Yes
Answering machine Yes
Lines quantity 2 lines
Management features
Volume control Digital
Integrated voicemail Yes
Display
Backlight display Yes
Touchscreen No
Display resolution 396 x 162 pixels
Display diagonal 8.89 cm (3.5")
Audio
Voice codecs G.711a, G.722, G.729A, iLBC
Speakerphone Yes
Network
Supported network protocols IEEE 802.3, IEEE 802.3u, IEEE 802.3af
Security algorithms 128-bit AES, 256-bit AES, 802.1x RADIUS, SRTP, SSL/TLS
Quality of Service (QoS) support Yes
Bluetooth No
Wi-Fi No
Ethernet LAN Yes
Ports & interfaces
Ethernet LAN (RJ-45) ports 2
Certificates
Safety UL 60950, CAN/CSA - C22.2, EN 60950, IEC 60950, AS/NZS 60950, GB4943
Power
Power over Ethernet (PoE) Yes
Operational conditions
Operating temperature (T-T) 0 - 40 °C
Operating relative humidity (H-H) 10 - 90%
Storage relative humidity (H-H) 10 - 95%
Storage temperature (T-T) -10 - 60 °C
Weight & dimensions
Weight 867 g
Height 28 mm
Depth 206 mm
Width 207 mm