Tech specs
Brand
Cisco
Product Line
Cisco IP Phone
Model
7821
Manufacturer
Cisco Systems
IP Address Assignment
DHCP, Static
IP Telephony Network Ports
2 x Ethernet 10Base-T/100Base-TX
Network Features
Lightweight Directory Access Protocol (LDAP)
Network Protocols
Cisco Discovery Protocol (CDP), SRTP
Phone Connections
Headset jack
Backlit Display
Yes
Color Support
Monochrome
Display Diagonal Size
3.5 inch
Display Diagonal Size (metric)
8.9 centimetre
Display Languages
Arabic, Brazilian Portuguese, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, English, Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish
Display Location
Base
Display Resolution
396 x 162 pixels
Display Type
LCD display
Indicators & Controls
Headset, Speakerphone indicator, Voice message waiting indicator
Multiple Conferencing
Yes
Speakerphone
Yes
Voice Codec
G.711a, G.711u, G.722, G.729ab, iLBC
Additional Functions
Call timer
Call Services
Call Forwarding, Call Hold, Call Transfer, Call Waiting, Caller ID, Message Waiting Capability, Voicemail
Dialer Location
Base
Lines Supported
2 lines
Main Features
Integrated Ethernet switch, Multiple VoIP protocol support
Packaged Quantity
1
Placing/Mounting
Table-top, Wall-mountable
Power Over Ethernet (PoE) Support
Yes
Product Type
VoIP phone
Programmable Buttons
2
Quality of Service
IEEE 802.1p, IEEE 802.1Q (VLAN)
Security
IEEE 802.1X
VoIP
Yes
VoIP Protocols
SIP, SRTP
Base Depth
2.8 centimetre
Base Height
20.7 centimetre
Base Weight
867 gram
Base Width
20.6 centimetre
Body Material
PC/ABS
Color Category
Black
ENERGY STAR Certified
No
EPEAT Compliant
No
TCO Certified
No
Accessories
- CDW Recommends (8) total accessories
- Headsets (5) total accessories
- Phones & Video Conferencing (2) total accessories
- Phones (1) total accessories
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