Refer to publications that are specific to your language, phone model, and call control system. Navigate from the following documentation URL:

https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-8800-series/tsd-products-support-series-home.html

The Deployment Guide is located at the following URL:

https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-8800-series/products-implementation-design-guides-list.html

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:

https://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-callmanager/tsd-products-support-series-home.html

See the publications that are specific to your language, phone model and Cisco Unified Communications Manager Express release. Navigate from the following documentation URL:

https://www.cisco.com/c/en/us/support/unified-communications/unified-communications-manager-express/tsd-products-support-series-home.html

The following list contains the severity 1, 2, and 3 defects that are open for the Cisco Wireless IP Phone 8821 that use Firmware Release 11.0(4)SR1.

For more information about an individual defect, you can access the online record for the defect from the Bug Search Toolkit. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the list reflects a snapshot of the defects that were open at the time this report was compiled. For an updated view of open defects or to view specific bugs, access the Bug Search Toolkit as described in View Caveats.

• CSCuw10789 Configuration: RTP/sRTP Port Range Configuration

• CSCux86153 Reverting Focus Priority set at \"Lower\" doesn't work as expected.

• CSCuz22603 Phone may fail to update trust list files after reset

• CSCva02670 Not able to delete paired BT devices when Bluetooth is turned off

• CSCva89241 Call doesn't forward to Voicemail when \"No Ring on duration\" set to 200

• CSCvb72018 Should dial from the highlighted line when posting Dial URI to the phone

• CSCvc26512 8821 FIPPA does not show notification of Server Failure on CCX Failover

• CSCvd49867 Phone doesn't execute application button activation timer accurately

• CSCvd72816 RSSI value for connected AP is slow to update when phone is in Single AP mode

• CSCve00725 Key processing failed due to QT issue

• CSCvf61864 Messages received before keypad auto lock will not display after ending incoming calls

• CSCvg06985 8821 won't boot, won't power on: LOADER authentication failure

• CSCvg33518 Entering PD/CD Multiple Times Causes Memory Leak

• CSCvg59066 Speed Dial & BLF SD are not working when on call

• CSCvh27418 Transfer soft key shall be grey before C answer while semi-transfer is diabled.

• CSCvh27809 Focus and soft key error while press up-down hard key during conference

• CSCvh27815 8821 reached its maximum number of calls after being declined twice

• CSCvh28187 Can't pair with Plantronics VoyagerPro BT headset after disable/enable BT

• CSCvh31648 Call should be disconnected while BT headset out of range for more than 30 seconds

• CSCvh40589 Call disconnected while power off Jabra MOTION BT headset during call

• CSCvh40728 Sometimes redial from Plantronics VoyagerPro BT headset not work

• CSCvh47665 No Secure tone played on protected phones while enable speaker

• CSCvh50994 No error toast prompts while cBarge failed due to maximum participants has been reached

• CSCvh55508 WFi chip is not waking up at regular interval in single AP mode

• CSCvh64535 Random roaming timeouts seen on conducted roaming testbed

• CSCvh72297 Voice mail speed dial is not working if services provisioning set to External URL

• CSCvh89574 Pressing Green button to make a call - missing in PD/CD & Line View

• CSCvi24947 Display will not off while phone has one-way incoming intercom call

• CSCvi66235 PB: When configuring a Favorite, middle button can dial number by mistake when in Contact details

• CSCvi68937 8821 advertises dongle MAC instead of phone MAC via CDP

• CSCvi87634 Sometimes time display error on call session bubble for 3-5 seconds

• CSCvj02218 Park resume is greyed out in 8821 registered in CME

• CSCvj30229 Change focus in line view app window display

• CSCvj38637 CUCM WLAN Profile download and apply occurs prior to user cert install via SCEP

• CSCvj39392 Call drop for pending conference after scroll up then press Merge all soft key

• CSCvj39548 The session can't resume when switch back to the session initiated by conf method

• CSCvj42007 DUT don't vibrate sometimes when pickup call with DND enable

• CSCvj42039 Voice volume setting of BT headset hasn't been saved after headset power off and on

• CSCvj42047 Somtimes there is no MOH when call with Bluetooth headset on

• CSCvj43956 New call soft key not work while focus on BLF speed dial

• CSCvj44276 No notification tone for callback when intercom call is in active status

• CSCvj45498 Ringer shouldn't play thu headset in Australia network locale when inserting headset during ringing

• CSCvj46981 \"Battery charging\" toast not display when power charging with USB cable.

• CSCvj47001 Ringer for incoming call switches to headset after docked when ringer output is set to speaker

• CSCvj53208 White screen flash while charging powered off phone

• CSCvj54504 Blank call view after end the call on one line and then resume call on another line

• CSCvj54731 Should delay ringer output for 4 sec if 2nd call comes in immediately after 1st call is ended

• CSCvj55168 ip can be pinged after dhcp address released through \"wifi interface\"

• CSCvj55253 Can't move focus to other lines with nav-button when phone is in dialing.

• CSCvj59203 Phone lost IP due to encryption/decryption issue caused by wrong key

• CSCvj92752 Failed to answer the reverting call by BT (Jabra SUPREME,Plantronics Legend,Plantronics PRO)

• CSCvj94952 On Phone's LCD, the DN has not been changed after access hCluster successfully with EMCC method

• CSCvk22665 8821 display comes on sometimes when on call with shared line

• CSCvk30176 No response while press conf soft key after merge all on secured SRST

• CSCvk49377 TX/Rx data packets issue after roaming during JFW stress test

• CSCvk54638 8821 Not Ringing While Connected To Single Bay Charger (CP-DSKCH-8821)

• CSCvk73764 Phone unable to connect to BTheadset after phone power cycle

• CSCvm03674 one 8821 can't fallback to sub-cucm after sub CM service start more than half an hour

• CSCvm04637 Continuous scan busy is reproducible on Conducted test bed with channel setting 36/44@20Mhz

The following list contains the severity 1, 2, and 3 defects that are resolved for the Cisco Wireless IP Phone 8821 that use Firmware Release 11.0(4)SR1.

For more information about an individual defect, you can access the online record for the defect from the Bug Search Toolkit. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the list reflects a snapshot of the defects that were resolved at the time this report was compiled. For an updated view of resolved defects or to view specific bugs, access the Bug Search Toolkit as described in View Caveats.

• CSCvg52085 Misleading unregistration reason code when 8821 is powered off

• CSCvj31724 Phone stays at blue screen with Cisco logo when booting and battery is low

• CSCvj37175 Java crash and phone reset after press merge all on secured SRST

• CSCvj44543 8821 IP Phone loses DHCP IP Address after OOR event on Meraki AP

• CSCvj47572 8821 only try to resolve IP of TVS server one time after boot up

• CSCvj61343 Cisco IP Phone 8821 Denial of Service Vulnerability

• CSCvj63107 Phone rebooted during active call due to java restart

• CSCvj65574 Hourly logs files may be corrupted which hinders troubleshooting activity

• CSCvj87057 Filled up messagequeue of pwrman thread may prevent 8821 from sleep/wakeup

• CSCvj91058 playtone in asynchronization way will use up java heap memory

• CSCvj91846 Java null pointer when viewing certificate webpage after upload user cert without private key

• CSCvj92442 Unlock softkey missed after 8821 received Init:Services

• CSCvj94600 Phone log cannot send to remote syslog server after DUT roaming success

• CSCvj97176 Continuous DHCP_DISCOVER from 8821 phone

• CSCvj99911 8821 log files can be duplicated between tar files.

• CSCvk11147 when to show app, NullPointerException may be thrown

• CSCvk13631 CP-8821 - ssl buffer limit exceeded

• CSCvk33193 Softkeys not retained on XSI page after back from second page or end a call

• CSCvk34280 After call or RTP session, Phone battery life lasts approx 24 hours

• CSCvk38084 Problems with Exit and Back keys