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(5)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

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

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

• CSCvi80433 Phone doesn't process the EAP request frame, causing de-registration

• CSCvj31950 Intermittent \"Device or resource busy\" can still happen

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

• CSCvk59324 CCKM roaming failure then call dropped on roaming stress test bed

• CSCvm04637 Continuous scan busy is reproducible on Conducted test bed

• CSCvm58907 Firmware sometimes couldn't complete the fresh association

• CSCvm66028 Phone will eventually loose WiFi when roaming between 2 AP's set at 80MHz/40MHz

• CSCvm69293 Network configuration info not displayed on current wlan profile

• CSCvm74978 8821 phone sometimes couldn't receive the EAP identity request on 2.4G JFW test bed.

• CSCvm87368 Phone can't get ip address when DHCP option 150 field configured with MaxLength

• CSCvm91475 Can't answer incoming call for a while when hold reversion is 20s with about 20 call sessions

• CSCvm94269 DTIM period in WLAN Diags shows as 3 sometimes

• CSCvm95611 XML message does not display on lock screen if http url priority is 1 or 2

• CSCvn05182 UI error while enable FAC

• CSCvn07039 \"Error:Invalid Code in Speed dial\" not display while press SD including error FAC or CMC

• CSCvn18501 MLPP priority lost in session bubble during xfer/conference

• CSCvn41362 cp8821：no \"CAL Text#\" displayed in \"incoming call toast\"

• CSCvn42965 Ring Setting of Busy Station set to Ring not work on 8821

• CSCvn43154 No \"details\" softkey in multi-leg call history

• CSCvn58894 8821 Persional Directory Login should not display again after success login & exit without logout

• CSCvn63992 UI: missing SSID if in neighbor list before WLAN connection

• CSCvn64510 Neighbor list shows multiple AP's and does not update when in Single AP mode

• CSCvn66303 Phone not vibrate while with hold or RIU session when vibrate on ring:on

• CSCvn81608 Java process sometimes has significant delay in receiving events from wlanmgr after OOR & In Range

• CSCvo02996 \"Call transferred\" prompted when just making a call out

• CSCvo03077 Conference call still in held mode when all the other parties ended the call

• CSCvo05996 No Recording Tone heard after hold/resume several times.

• CSCvo09354 No toast message displayed after unchecking \"Logged into Huntgroup\" checkbox

• CSCvo26159 8821 failing to roam flexconnect over the air after reassoc_resp it tries to auth with previous AP

• CSCvo30508 Softkey options shouldn't be shown in line missed calls page if blank

• CSCvo32881 Both speaker icon displayed when setting auto answer with speaker on shared line

• CSCvo37017 The ring doesn't play when a call in hold revert

• CSCvo44285 Multiple Vulnerabilities in qt

• CSCvo45811 Multiple Vulnerabilities in glibc

• CSCvo46442 Phone shut down when battery was showing 13%

• CSCvo55873 CFW info on non-primary line shall not be carried to SRST

• CSCvo74044 Hear short sharp ring tone during hold revert with Chirp1&2 ringtone and RIU session.

• CSCvo74177 Sometimes(90%) ringer is very small in hold reversion state when ringer volume is maximized

• CSCvo78333 Conference call UI display error on SRST

• CSCvo82607 Wrong behavior after press red key on originator phone in conference call when failover to SRST

• CSCvp02109 UI got into abnormal state after exiting PRT prior to completion then back to Settings when done

• CSCvp07713 WLAN diag not showing 2.4GHz AP's in WLAN profile set for 2.4GHz

• CSCvp14422 Phone will not roam from 5GHz WLAN profile to 2.4GHz WLAN profile if SSID disabled via WLC

• CSCvp31145 Stuttering audio quality with power save enabled

• CSCvp46085 Power button not working when initiating upgrade on multiple phones

• CSCvp63439 Vulnerabilities in wlan firmware: EAPOL M3 Embedded GTK : double buffer overflow

• CSCvq19702 Evaluation of sl-wireless-phones for TCP_SACK

• CSCvq31290 BusyBox add_match Function Arbitrary Code Execution Vulnerability

• CSCvq37631 After going Out of Range and re-registering the phone shows the line label as ????

• CSCvq42948 8821 phones are not able to renew LSC certificates via SCEP

• CSCvq48506 8821 Intermittent network busy and ps-poll versus UAPSD power save mode

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(5)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.

• CSCvp24305 Battery voltage exceeds the maximum voltage in certain stress test situations