The Cisco Wireless IP Phone 8821 and 8821-EX are 802.11 dual-band wireless devices that provide comprehensive voice communications in conjunction with Cisco Unified Communications Manager and with Cisco Aironet and Cisco Meraki access points (APs) in a private business communications network.
The Cisco Wireless IP Phone 8821-EX is not currently supported.
The phones provide voice communication over the same wireless LAN that your computer uses, allowing you to place and receive phone calls, put calls on hold, transfer calls, make conference calls, and so on. Both phones have Ingress Protection 67 (IP67) level protection, which indicates dust-tight equipment that is protected against water (see below).
The Cisco Wireless IP Phone 8821-EX is certified for Potentially Explosive Atmosphere ATEX Class I Zone 2, North America Class I Division 2/Zone 2. The phone is certified for use in potentially explosive (hazardous) environments where flammable gasses, vapors or liquids may be present for a short period of time or under abnormal conditions. The phone has an industry-standard yellow styling that offers fast recognition in emergency situations.
図 1. Cisco Wireless IP Phone 8821 and 8821-EX.
The following figure shows the Cisco Wireless IP Phone 8821 on the left and the Cisco Wireless IP Phone 8821-EX on the right.
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:
Resistance to damage from dropping the phone
Tolerance of antibacterial and alcohol-based wipes
Latex- and lead-free
Shockproof and vibration-proof
USB On-the-Go (OTG) 2.0 interface
IP67 protection, which indicates dust-tight equipment that is protected against water (see below)
Cisco Wireless IP Phone 8821-EX only:
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:
Use of Bluetooth wireless headsets, including certain hands-free call features
Wireless access to your phone number and the corporate directory
Access to network data, XML applications, and web-based services
Online customizing of phone features and services from your Self Care portal
The Cisco Wireless IP Phone 8821 and 8821-EX
are tested under controlled laboratory conditions with a rating of
IP67 under IEC standard 60529. Ingress Protection 67 (IP67) level protection indicates dust-tight equipment that is protected against water. Splash, water, and dust resistance
are not permanent conditions, and resistance might decrease as a
result of normal wear. Users are expected to take care of the phone and should not deliberately expose the
device to a hostile environment of dust, splash, or water
To prevent device damage:
Don't bathe or swim with
Don't expose phone
to pressurized water or high velocity water, such as when
showering, cleaning, or hand washing.
Don't use the phone in
a sauna or steam room.
Don't intentionally submerge
phone in water.
Don't operate the phone
outside the suggested temperature ranges or in extremely humid, hot,
or cold conditions.
Don't store phones,
batteries, and accessories outside the suggested temperature ranges
or in extremely humid, hot, or cold conditions.
Don't drop the phone
or subject it to other impacts.
Don't disassemble the phone; don't remove any screws.
Don't use harsh cleaning
agents like bleach and more to clean phone
Don't use a broken battery door
or a battery door with a broken seal.
Minimize the exposure of your phone to
soap, detergent, acids or acidic foods, and any liquids; for
example, salt water, soapy water, pool water, perfume, insect
repellent, lotions, sun screen, oil, adhesive remover, hair dye,
soft drinks, and solvents. For more information, see Care of Your Phone.