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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.
(注) | 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.
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 immersion.
To prevent device damage:
Don't bathe or swim with the phone.
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 exterior
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.
Your wireless phone has many buttons and hardware features that you will use regularly. Use the following figure and table to identify the important button and hardware features. The figure shows the Cisco Wireless IP Phone 8821, but the Cisco Wireless IP Phone 8821-EX is similar in appearance. The table describes the functions of the keys on the phones.
When a wireless phone powers up, the startup sequence is:
The red LED lights up.
The phone loads the firmware image that is stored in nonvolatile memory.
The screen turns on.
The phone scans for an access point.
The phone authenticates with the access point.
The phone connects with the Cisco Unified Communications Manager. If necessary, the phone obtains an updated firmware load and configuration file.
You can clean your phone. Make sure you follow our cleaning instructions.
Clean your phone immediately if it comes in contact with anything that may cause stains, or other damage; for example, dirt or sand, ink, makeup, soap, detergent, acids, acidic foods, or lotions.
If you happen to drop the phone into water, or it gets splashed, you need to dry off the phone using our instructions. See If You Drop Your Phone in Water.
You can clean the phone exterior using a dry, lint-free cloth. For the health-care environment, we recommend that you use Caviwipes™ and Saniwipes™ to thoroughly clean the phone. Caviwipes and Saniwipes contain up to 17% isopropanol.
Any cleaning solution containing a higher amount of isopropanol, including pure isopropanol, or an alternative alcohol-based liquid could potentially damage the phone. Do not clean the phone with bleach or other caustic products.
Excessive use of Caviwipes and Saniwipes more than 3 times a day will damage the phone surface coating and will change the appearance of phone.
Clean your phone immediately if it comes in contact with anything that may cause stains, or other damage; for example, dirt or sand, ink, makeup, soap, detergent, acids, acidic foods, or lotions.
注意 | Do not use compressed air to clean the openings of the phone. The air can damage the phone and voids the phone warranty. |
If you drop your phone in water, here's what you do:
Gently shake the water off the phone.
Dry the phone with a soft, dry, lint-free cloth.
Leave your phone in a dry area with some air flow; for example, a fan blowing cool air can be directed onto the phone speaker grill to help the phone dry out.
Here are some things you don't do:
Don't open the battery door while the phone is wet.
Don't use compressed air to blow off the water.
Don't use a hair dryer to dry off the phone.
Don't put a cotton swab, paper towel, or cloth into the headset jack or inside the battery compartment.
Don't tap the phone on a hard surface.
Don't charge a wet phone using the charging cable. You must wait until the phone is completely dry.
Don't put a wet phone into the desktop charger, or multicharger. You must wait until the phone is completely dry.
注意 | To ensure that the phone does not get water into the battery compartment, make sure that the compartment is tightly closed. See Install the Phone Battery. If the sound is muffled after you dry the phone, there may still be water in the microphone or speaker compartments. Place your phone, speaker-side down, on a dry, lint-free cloth to see if water drips out. If there is still water in the phone, allow the phone to completely dry before you use it. |
The Cisco Wireless IP Phone 8821 and 8821-EX has a 2060-mAh smart battery. The battery capacity is reduced to 80% after 500 full charging cycles (charging from empty to full). The battery life also depends on the phone state and AP scanning configuration.
Call State |
Scan Mode |
Expected Battery Time |
---|---|---|
On Call |
Continuous |
Up to 13 hours |
Auto |
Up to 13 hours |
|
Idle |
Continuous |
Up to 48 hours |
Auto |
Up to 170 hours |
Follow these best practices to ensure that the phone conserves battery power.
Remind your users that the battery life is reduced when the phone is turned on. Calls, messages, application use, Bluetooth use, and actions like menu navigation use power.
Users should ensure that the phone remains in a good RF coverage area and that the phone can maintain a constant connection to the Cisco Unified Communications Manager. If the phone moves out of range and remains out of range for a significant time, battery life can be reduced.
For more information about RF coverage, see Cisco Wireless IP Phone 882x Deployment Guide.
Configure the Scan mode field in Cisco Unified Communications Manager to suit your enterprise. The phone supports Continuous, Auto, and Single AP scanning, where Continuous is the default. The configured scan mode determines the battery life baseline.
Continuous scan mode is designed for phone users that are constantly on the move and for whom frequent roaming events occur. This mode maximizes performance and connectivity, but at the expense of battery power.
Auto scan mode is designed for phone users that only roam occasionally, and whoe require more idle battery life than Continuous scan mode can offer.
Single AP scan mode is designed for phone users that do not roam and require maximum idle battery life.
For optimal idle battery life, we recommend that you use an access point that supports the Cisco Compatible Extensions (CCX) Proxy ARP feature. CCX Proxy ARP allows the phone to remain in suspend mode longer instead of waking up at each DTIM period. This reduces power consumption.
The Cisco Lightweight Access Points and Cisco Autonomous Access Points support CCX Proxy ARP, but Cisco Meraki Access Points do not.
For Cisco Lightweight Access Points, CCX Proxy ARP is enabled by default and nonconfigurable. For Cisco Autonomous Access Points, CCX Proxy ARP is disabled by default, but can be enabled with the dot11 arp-cache optional command.
If the access point does not support CCX Proxy ARP, then the phone must wake up at each DTIM period. Frequent wakeups can reduce the idle battery life by as much as 50%.
We recommend that you use an access point that supports the Cisco Compatible Extensions (CCX) Dynamic Transmit Power Control (DTPC) feature. When DTPC is enabled, the access point advertises its transmit power to all clients. The phone adjusts its transmit power to the minimum level necessary to communicate with the access point. A lower transmit power reduces unnecessary noise in other areas.
Limit the use of multicast. If the phone subscribes to a multicast stream, it wakes up at each DTIM period to receive multicast frames. Frequent wake-ups cause power consumption to increase.
Select an access point that supports U-APSD. This power save protocol is used when on call and when idle.
The On Call Power Save field in the Wi-Fi Profile should remain enabled so that the phone can use U-APSD.
If the On Call Power Save field is disabled, then the phone uses active mode when on call, but uses U-APSD when in idle mode.
Only disable On Call Power Save for troubleshooting purposes.
The following table contains the information that was added or changed in this book for this firmware release.
Feature |
Updates |
---|---|
FIPS 140-2 Level 1 Support |
|
Power Saving Enhancements |
The factory installs a version of the phone firmware on the phone during manufacturing. But that firmware may not be the latest firmware version.
Your Cisco Unified Communications Manager stores the firmware loads. If the version of firmware on the phone is not the latest version, the Cisco Unified Communications Manager sends the updated firmware load to the phone.
The Cisco Unified Communication Manager Device Pack contains device configuration capabilities for the phones. Many phone features require the latest device package to be installed on the Cisco Unified Communications Manager. If you do not install the device pack, the new phone features do not work.
A device pack introduces new phone types to Cisco Unified Communication Manager. The pack installs the firmware and the configuration files needed to enable features on your phone. New features may be turned off by default and they have attributes or settings that must be configured.
To find which device packs are available for your Cisco Unified Communications Manager version and phone, go to: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/compat/devpack_comp_mtx.html
Configuration files for a phone are stored on the TFTP server and define parameters for connecting to Cisco Unified Communications Manager. In general, any time you make a change in Cisco Unified Communications Manager that requires the phone to be reset, a change is automatically made to the phone configuration file.
Configuration files also contain information about which image load the phone should be running. If this image load differs from the one currently loaded on a phone, the phone contacts the TFTP server to request the required load files.
If you configure security-related settings in Cisco Unified Communications Manager Administration, the phone configuration file will contain sensitive information. To ensure the privacy of a configuration file, you must configure it for encryption. For more information, see the documentation for your particular Cisco Unified Communications Manager release. A phone requests a configuration file whenever it resets and registers with Cisco Unified Communications Manager.
A phone accesses a default configuration file named XmlDefault.cnf.xml from the TFTP server when the following conditions exist:
Refer to publications that are specific to your language, phone model, and call control system. Navigate from the following documentation URL:
The Deployment Guide is located at the following URL:
See the Cisco Unified Communications Manager Documentation Guide and other publications that are specific to your Cisco Unified Communications Manager release. Navigate from the following documentation URL:
See the publications that are specific to your language, phone model and Cisco Unified Communications Manager Express release. Navigate from the following documentation URL:
Refer to the Cisco Business Edition 6000 Documentation Guide and other publications that are specific to your Cisco Business Edition 6000 release. Navigate from the following URL:
For information on obtaining documentation, obtaining support, providing documentation feedback, reviewing security guidelines, and also recommended aliases and general Cisco documents, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Subscribe to the What’s New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.
If you are a system administrator, you are likely the primary source of information for Cisco IP Phone users in your network or company. It is important to provide current and thorough information to end users.
To successfully use some of the features on the Cisco IP Phone (including Speed Dial, Services, and voice message system options), users must receive information from you or from your network team or must be able to contact you for assistance. Make sure to provide users with the names of people to contact for assistance and with instructions for contacting those people.
We recommend that you create a web page on your internal support site that provides end users with important information about their Cisco IP Phones.
Consider including the following types of information on this site: