Cisco 8821

Figure 1: Cisco Wireless IP Phone 8821 and 8821-EX
These phones, like other network devices, must be configured and managed. The phones support G.711a.
G.711u, G.722, G.729a, G.729ab, iLBC, and iSAC codecs. The phones also support uncompressed wideband
(16 bits, 16 kHz) audio.
The phones are hearing aid compatible (HAC) but do not have any TTY features. They have ridges on the
sides of the 5 key that is a tactile identifier.
The physical characteristics include:
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Resistance to damage from dropping the phone
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Tolerance of antibacterial and alcohol-based wipes
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Latex- and lead-free
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Shockproof and vibration-proof
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USB On-the-Go (OTG) 2.0 interface
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IP67 protection, which indicates dust-tight equipment that is protected against water (see below)
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Cisco Wireless IP Phone 8821-EX only:
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Certified for use in Potentially Explosive Atmosphere:
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ATEX Class I Zone 2
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CSA Certified for Class I Division 2/Zone 2
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Industry-standard yellow styling offers fast recognition in emergency situations.
In addition to basic call-handling features, your phone can provide enhanced productivity features that extend
your call-handling capabilities.
Depending on the configuration, your phone supports:
Cisco Wireless IP Phone 8821 and 8821-EX User Guide
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Your Phone
The Cisco Wireless IP Phone 8821 and 8821-EX