Cisco IP Phone 8841, 8851, and 8861 Release Notes for Firmware Release 10.2(1)
Introduction
Cisco IP Phone 8841, 8851, and 8861 Features
Related Documentation
- Cisco IP Phone 8800 Series Documentation
- Cisco Unified Communications Manager Documentation
Installation
- Install the Firmware Release on the Cisco Unified Communications Manager
- Install Firmware Zip Files
Unified Communications Manager Endpoints Locale Installer
Limitations and Restrictions
Caveats
Cisco IP Phone Firmware Support Policy
Documentation, Service Requests, and Additional Information

Cisco IP Phone 8841, 8851, and 8861 Release Notes for Firmware Release 10.2(1)

Introduction

These release notes support the Cisco IP Phones 8841, 8851, and 8861 running SIP Firmware Release 10.2(1).

The following table lists the support and protocol compatibility for the Cisco IP Phones.

Table 1. Cisco IP Phones, Support, and Firmware Release Compatibility
Cisco IP Phone	Protocol	Support Requirements
Cisco IP Phones 8841, 8851, and 8861	SIP	Cisco Unified Communications Manager 8.5(1) and later Cisco Unified Communications Manager DST Olsen version D or later SRST 8.0 (IOS load 15.1(1)T) and above CME 10.0 (IOS load 15.3(3)M) and above through Fast-Track

Cisco IP Phone 8841, 8851, and 8861 Features

The Cisco IP Phone 8841, 8851, and 8861 delivers easy-to-use, highly secure voice communications. Cisco Intelligent Proximity integrates telephony features with personal mobile devices. Options, including support for Wi-Fi networks, offer added flexibility.

A comprehensive set of Cisco Unified Communications Manager features are supported.

The following sections describe some of the important phone features. For more information, see http://www.cisco.com/c/en/us/products/collaboration-endpoints/unified-ip-phone-8800-series/index.html.

Bluetooth Handsfree Profile Audio Gateway

Cisco IP Phones 8851 and 8861 support Hands-free Audio Gateway mode to work with your Bluetooth headset.

Cisco Intelligent Proximity Support

Users can share contacts and call history. They can also move the audio path of active voice and video calls from a personal mobile device to the Cisco IP Phone 8851 and Cisco IP Phone 8861 for a superior audio experience.

Bluetooth Phone Book Access Profile (PBAP)

The Cisco IP Phones 8851 and 8861 support contact and call history sharing from the mobile cellular device through the Bluetooth PBA profile. A maximum of 1500 contacts can be imported and displayed on Cisco IP Phones 8851 and 8861. Each contact item can have a maximum of 5 numbers with a maximum 30 characters for each number. The allowed contact name is a maximum of 60 characters.

Note

When an Android phone is connected, the user sees an alert pop-up asking whether Phone Book Access is allowed on that Android device. The user must select Allowed within 30 seconds in order to import the Android phone book to Cisco IP Phones 8851 and 8861.

Note

An iPhone can connect to two Cisco IP Phones 8851 and 8861 at the same time, but only one of the IP phones can access the iPhone phone book.

Bluetooth Handsfree Profile (HFP)

Cisco IP Phones 8851 and 8861 support Hands-free Unit mode to work with mobile cellular devices for full telephony integration and two-way hands-free audio.

Hands-free Unit mode with mobile cellular devices is only supported on the following devices:

Apple iPhone 4 and 5 series
Samsung Galaxy S4, Note 2, and Note 3 series

IPMA Support

The Cisco IP Phones 8841, 8851, and 8861 support Cisco IP Manager Assistant (IPMA). IPMA is supported on Cisco Unified Communications Manager Releases 9.1(2) SU2 and 10.5.

Support for IPMA on the Cisco Unified Communications Manager Releases 8.6 and 10.0 will be available soon.

IPMA is not supported on Cisco Unified Communications Manager Release 8.5.1 or earlier.

SHA-256 Manufacturing Installed Certificate

The Cisco IP Phones 8841, 8851, and 8861 use a manufacturing installed certificate (MIC) with the signature algorithm of SHA-256 with an RSA 2048 key. The signature algorithm requires Cisco Unified Communications Manager, ACS, and Secure SRST support.

The Cisco certificate authority issuing the MIC for this series of phones can be obtained from the following links if separate applications are used and these applications need to authenticate MIC from the phone.

The SHA-256 MIC feature has the following support requirements:

Cisco Unified Communications Manager releases:
- The compatible Cisco Unified Communications Manager releases are Cisco Unified Communications Manager 9.1(2) and later.
- Cisco Unified Communications Manager 8.6(2) support is planned.
- There is no plan to support this SHA-256 MIC on Cisco Unified Communications Manager Release 8.5 or earlier.
The compatible ACS release is ACS 5.2 and later.
The compatible SRST release is IOS 12.4(15)T1 and later.

USB Charging

The Cisco IP Phones 8851 and 8861 allow users to charge personal mobile devices using the phone USB ports. The following table describes the USB charging specifications for personal mobile devices.


	Cisco IP Phone 8851	Cisco IP Phone 8861
Smart phone charging	Yes (802.3af)	Yes (802.3af)
Tablet charging	No (no back USB port)	Yes (802.3at)

The side USB port on the Cisco IP Phones 8851 and 8861 only supports slow charging with limited 500mA/2.5W maximum power.

The back USB port on the Cisco IP Phone 8861 supports fast charging up to 2.1A/10.5W maximum power.

Note

When the Cisco IP Phone 8861 is using PoE with an 802.3af switch, the back USB port can only work in slow-charging mode due to the limited power supply from 802.3af switch.

Wi-Fi Client

The Cisco IP Phone 8861 supports campuses with 802.11a/b/g/n/ac WLAN enabled. Customers need to ensure that 12 Mbps is enabled in the WLAN Controller or Access Point (AP) data rate configuration.

We recommend that customers use 5 GHz as there are more channels and less interferers with those frequencies.

Attention

The network administrator must ensure that the AP configuration conforms to local regulatory laws.

Installation

Install the Firmware Release on the Cisco Unified Communications Manager

Before using the phone firmware release on the Cisco Unified Communications Manager, you must install the latest Cisco Unified Communications Manager firmware on all Cisco Unified Communications Manager servers in the cluster.

Procedure

Step 1

Go to the following URL:

https://software.cisco.com/download/navigator.html?mdfid=284729655&flowid=75283

Step 2

Depending on your phone model, choose Cisco IP Phone 8800 Series.

Step 3

Choose your phone type.

Step 4

Choose Session Initiation Protocol (SIP) Software.

Step 5

In the Latest Releases folder, choose 10.2(1).

Step 6

Select one of the following firmware files, click the Download or Add to cart button, and follow the prompts:

cmterm-88xx-sip.10-2-1-16.cop.sgn

Note

If you added the firmware file to the cart, click the Download Cart link when you are ready to download the file.

Step 7

Click the + next to the firmware file name in the Download Cart section to access additional information about this file. The hyperlink for the readme file is in the Additional Information section, which contains installation instructions for the corresponding firmware.

Step 8

Follow the instructions in the readme file to install the firmware.

Install Firmware Zip Files

If a Cisco Unified Communications Manager is not available to load the installer program, the following .zip files are available to load the firmware.

cmterm-88xx-sip.10-2-1-16.zip

Firmware upgrades over the WLAN interface may take longer than upgrades using a wired connection. Upgrade times over the WLAN interface may take more than an hour, depending on the quality and bandwidth of the wireless connection.

Procedure

Step 1	Go to the following URL: https://software.cisco.com/download/navigator.html?mdfid=284729655&flowid=75283
Step 2	Choose Cisco IP Phones 8800 Series.
Step 3	Choose your phone type.
Step 4	Choose Session Initiation Protocol (SIP) Software.
Step 5	In the Latest Releases folder, choose 10.2(1).
Step 6	Download the relevant zip files.
Step 7	Unzip the files.
Step 8	Manually copy the unzipped files to the directory on the TFTP server. See Cisco Unified Communications Operating System Administration Guide for information about how to manually copy the firmware files to the server.

Unified Communications Manager Endpoints Locale Installer

By default, Cisco IP Phones are set up for the English (United States) locale. To use the Cisco IP Phones in other locales, you must install the locale-specific version of the Unified Communications Manager Endpoints Locale Installer on every Cisco Unified Communications Manager server in the cluster. The Locale Installer installs the latest translated text for the phone user interface and country-specific phone tones on your system so that they are available for the Cisco IP Phones.

To access the Locale Installer required for a release, access the Software Download page, navigate to your phone model, and select the Unified Communications Manager Endpoints Locale Installer link.

For more information, see the documentation for your particular Cisco Unified Communications Manager release.

Note

The latest Locale Installer may not be immediately available; continue to check the website for updates.

Limitations and Restrictions

Bluetooth Phone Book Access Profile Limitations

Cisco IP Phones 8851 and 8861 cannot display certain characters in the Contact/Call history imported from a mobile device if those characters are not included in the phone locale.
In this release, Cisco IP Phones 8851 and 8861 do not support the ability to initiate a new call from the mobile contact book through the Cisco Unified Communications Manager VoIP network.

Bluetooth Handsfree Profile Limitations

Only one Bluetooth device can be connected with Cisco IP Phones 8851 and 8861 at the same time, either a BT headset or a mobile phone.
Tablet pairing and connecting is not supported in this release.
Due to mobile device OS limitations, some soft clients on a mobile device (for example, Cisco Jabber or Skype) cannot make full telephony integration with Cisco IP Phones 8851 and 8861 for call controls like Answer, End, Hold, or Resume a call. Some known issues include:
- The incoming call event sent from mobile soft client to Cisco IP Phones 8851 and 8861 causes the ongoing VoIP call to go on hold automatically.
- The call information might not be displayed correctly on Cisco IP Phones 8851 and 8861.
- The call session does not disappear on Cisco IP Phones 8851 and 8861 when the Jabber call ends on the mobile device. Jabber version 10.5 and later removes this limitation.

Phone Behavior During Times of Network Congestion

Administrative tasks, such as an internal port scan or security scan.
Attacks that occur on your network, such as a Denial of Service attack.

Caveats

Access Cisco Bug Search

Known problems (bugs) are graded according to severity level. These release notes contain descriptions of the following:

All severity level 1 or 2 bugs
Significant severity level 3 bugs

You can search for problems by using Cisco Bug Search.

Before you begin

To access Cisco Bug Search, you need the following items:

Internet connection
Web browser
Cisco.com user ID and password

Procedure

Step 1

To access Cisco Bug Search, go to:

https://bst.cloudapps.cisco.com/bugsearch

Step 2

Step 3

To look for information about a specific problem, enter the bug ID number in the Search for field, then press Enter.

Open Caveats

The following table lists severity 1, 2, and 3 defects that are open for the Cisco Unified IP Phones that use Firmware Release 10.2(1).

For more information about an individual defect, you can access the online record for the defect by clicking the Identifier or going to the URL that is shown. You must be a registered Cisco.com user to access this online information.

Because defect status continually changes, the table reflects a snapshot of the defects that were open at the time this report was compiled. For an updated view of open defects, access Bug Toolkit as described in Access Cisco Bug Search.

Table 2. Open Caveats for Firmware Release 10.2(1)
Identifier	Description
CSCum62659	Phone will DNS query (none).domain after reset
CSCum64968	Display not be lit when On-Time comes with duration 00:00
CSCum75600	Wrong CUCM IP address in REFER before and after re-registration
CSCun19698	Conference feature layer shall close while participant side park.
CSCun24183	8861 doesn't make active scan in roaming
CSCun29272	8861 may doesn't reply eap-request in roaming
CSCun30024	Phone can answer a call from same phone
CSCun38032	Accessary(CDROM) Added window keeps pop up forever
CSCun41637	Wrong ReasonForOutOfService after IP address lost
CSCun47590	softkey response time is long
CSCun62056	Unable to complete conference; toast is wrong.
CSCun64117	ethernet interface drops 2% packet periodically
CSCun72773	Phone still shown as Application softkey set when register back to CCM
CSCun75414	USB headset on 8851 phone volume not loud enough
CSCun77699	CLI: show stream summary; should have only 1 active stream
CSCun78088	softkeys for xml file is gray and xml file is not display
CSCun78115	Line sequence in Ringtone menu not consistent with line button order
CSCun80759	Incorrect date showed in "Status Messages" after changing phone's load
CSCun83523	8861 ipv6:phone restart several times if 1st CUCM refused the register
CSCun88493	Service URL PLK doesn't work when failover to SRST
CSCun88943	Toast window not popup in time when feature PLK pressed
CSCun93340	iPad Mini USB charging caused Switches shut down the switch port of 8861
CSCun93597	CLI: Cannot get callReference from SessionItemModel
CSCun94444	CLI:Remote call state return empty via cli when shared line during call.
CSCun96422	Missing XML section in ModeInfo of Add Bluetooth Device window
CSCun98930	CLI:"show line all" cannot show "All Calls" line in bigeasy
CSCun99543	CLI: Call state show incorrectly via cli when phone play busy tone.
CSCuo02024	Character can't be shown on the UI if use a white color background image
CSCuo04139	UI response slow if configure multiple PFK BLF SD with same destination
CSCuo10939	CLI: erase ctl, but ctl is still shown
CSCuo10969	Connect/disconnect USB cause wrong last upgrade time on phone UI
CSCuo18535	Crash when plug/unplug usb hub during call
CSCuo18546	plugin/plugout USB hub, phone stuck.
CSCuo18779	8861 establish a call very slowly
CSCuo21617	MWI LED off and icon disappear for seconds after power cycle
CSCuo23873	post 'key:Key:KeyPad0 to Key:KeyPad9' can not work when display is off
CSCuo26551	Earring should not be heard from headset when DND reject call on.
CSCuo26761	No lock icon at the intercom received side sometimes
CSCuo31268	setRingtone Failed if phone stay on ringtone list page
CSCuo31577	Dial window flash twice when there's other app window behind
CSCuo33582	Sometimes iphone disconnected automatically after it connected with BE
CSCuo34073	No 'DHCP6 BOUND' status message for network statistics
CSCuo35638	Pilot number overlap with the scroll bar if pilot long enough
CSCuo35834	Missed call icon not display on related line if restart on one 8851
CSCuo38121	<< softkey didn't greyed even no digit here
CSCuo38272	Wrong message for dns down when phone accesses url with domain name
CSCuo40264	iPhone does not automatical connected after paired successful
CSCuo40482	share line key led is off after switch to another line in a short time
CSCuo40517	The statistics for starMedia URI is only 1 direction
CSCuo42529	Prompt IPC error in Jindo after running switch load scripts
CSCuo42726	HFU signal display not accurate on the phone
CSCuo42755	Phone can't exit from the error application
CSCuo43206	Autopickup history is incorrectly logged
CSCuo45443	Conference call history issues
CSCuo45740	Phone may fails to accept some IPv6 multicast packets over Wi-Fi
CSCuo47255	8861 rebooted by itself when resuming a call.
CSCuo47261	No focus when switching to missed call list view
CSCuo47265	Phone still ring after all calls are ended
CSCuo47545	Nav_select hardkey didn't work on xsi object
CSCuo47565	phone doesn't show valid information when not configure the primary line
CSCuo47589	No available line to play the message during VVM stress test
CSCuo48017	Wong alert trust list message but no tftp server change
CSCuo50527	change alt-tftp tftp 1 will blank tftp 2
CSCuo50761	IPv6 default router manual config cleared after switching to IPv4
CSCuo50988	Some noise heard on 8861 P2 during a call.
CSCuo51021	UI of paired devices for bluetooth page is not friendly
CSCuo51154	Phone shouldn't send RTCP package with even number during intercom call
CSCuo51278	Bluetooth ICON disappeared.
CSCuo52950	hourly archived logs are listed in disorder
CSCuo52962	phone is stuck when alter tftp to HCUCM
CSCuo52966	8861 connect with another AP slowly when the current AP disable
CSCuo53035	A blank screen shown if press back hardkey to exit a service
CSCuo53058	88xx Phone should remember password/username for HTTP service
CSCuo53169	Missed call icon on 2nd line disappear after open HFU
CSCuo53422	Audio disconnect after roaming
CSCuo53623	Phone stuck once after pressing hfu on/off quickly
CSCuo53938	Application windows can't regenerate after end the call
CSCuo55437	The LineInfo for HFU is wrong
CSCuo55493	phone plays old ringtone chirp instead of Delight
CSCuo55998	Phone restart during EM stress test
CSCuo56015	sometimes TFTP server IP cannot be cleared by UI after releasing DHCPv4
CSCuo56065	DN logged in history detail page is incorrect
CSCuo59730	URI share line can not record call log
CSCuo59782	New call window appear slower than white background when dial by speaker
CSCuo59994	8861 slow response to the network change
CSCuo61369	Still highlight the previous item after disable setting access
CSCuo61370	[IPMA]Assistant status window popup problem when hold/resume call
CSCuo61390	Different display about conference in Recents
CSCuo61398	delete softkey always disabled
CSCuo61740	8861 may register fail after wifi Session Timeout
CSCuo61741	Press NAV_Select hardkey will create a new session
CSCuo61789	UI slow in dozens of seconds after phone restart and configured with DNs
CSCuo61817	Fail to connect to EM service during EM stress test
CSCuo61867	Dial intra-cluster call from call history will fail
CSCuo61925	arp cache not timeout on wlan interface as defined by dhcp option 35
CSCuo62126	unknown string ??? display on "Status Message" page
CSCuo62506	Wrong history logged for anonymous@domain uri call
CSCuo62527	application window still on the top when make a HFU call
CSCuo62589	Phone can't enter the sub-window when pressing digit
CSCuo62598	Bluetooth menu is still accessible when settings access is disable
CSCuo62648	disable contacts access on BE, HFU line call history still exist.
CSCuo62944	Analog headset can hear voice from Handset in activated call
CSCuo64323	The order of PBAP contacts menu changes if get exit then enter in
CSCuo64598	delete softkey always enabled in wireless sign in page
CSCuo64696	no CUCM/TFTP/CAPF/TVS when checking CTL/ITL
CSCuo64830	8861 WLAN call duration test failed with "Network Busy"
CSCuo64846	incorrect administrator password is kept for inputting
CSCuo64877	No TCLAS for IPv6 signal or voice stream
CSCuo64886	Speed Dial softkey enabled on CME
CSCuo65174	PBAP contacts not refresh immediately if disable bluetooth contacts
CSCuo65477	screen turn off to black and show cisco log again when booting
CSCuo67334	White screen will last 1-2 second during phone bootup
CSCuo67572	The speaker still light after the HFU call audio moved to cellphone
CSCuo67644	The MLPP precedence indication didn't shown on the conference window
CSCuo69658	DNS Unknown IPv6 Host xxxx is shown in Status Messages
CSCuo69759	only one call log for share line join conference call
CSCuo69840	Can't sync up call histories from cell phone after successfully paired
CSCuo70043	Phone could not add more participants in conference chain
CSCuo72112	The title of Recent page is wrong when locale is set to Arabic(ar_LB)
CSCuo72121	The content of CTL/ITL written on the line when locale is Greek(el_GR)
CSCuo72163	Status for Decline softkey does not consist
CSCuo72296	Phone didn't honor HTTP expire header
CSCuo72678	"PC Vlan" display error in Locale ar_EG
CSCuo72827	some noise can be heard during the swap between headset and speaker
CSCuo72954	Actional incoming call is not dismissed after DND-R is on
CSCuo74475	8861: phone crash if plug out USB3.0 HUB during a call
CSCuo74718	Remember me can't set to Yes after change the extension
CSCuo75197	On one phone, cannot delete or disconnect bluetooth device
CSCuo75227	Name and the date will be overlapped if HFU phone name long
CSCuo77225	8861 can't register to tftp via wifi when dns response is a invalid ip
CSCuo77424	The DTMF tone could not be heard clearly on BT headset when dialing
CSCuo77499	Disable "Logging Display" 88xx still print logs to phone console
CSCuo77660	Screenshot got 503 error
CSCuo77666	HFU call bubble disappears but audio is kept after CUCM restarts
CSCuo77670	Bad audio quality via headset connected to USB hub
CSCuo77812	PBAP cannot sync when disable then enable contacts import on cucm
CSCuo79553	8861 with wifi lost server connection during whole night conference
CSCuo79598	No expected EnergyWise alert if set level 0 from switch
CSCuo79658	dhcp off failed via wifi
CSCuo79673	Wrong ip address in CUCM
CSCuo79884	88xx phone should not support parameter "Call Pickup Toast Timer"
CSCuo80147	"Clear List" softkey doesn't work well
CSCuo80369	Failed to make call after EM login/logout many times.
CSCuo80570	Phone fail to upgrade from 10-2-2MN-21 to 10-2-2MN-23 (seen once)
CSCuo80732	[Thailand]The message of "Reset All Settings" beyond the border
CSCuo82084	Incoming call toast didn't disappear even if share line answer the call
CSCuo82111	8861 crashed after plugin/push out Jabra 6470 headset
CSCuo82199	8861 got UI stuck
CSCuo82286	Call Session is blank when reached the max remote hold call
CSCuo82365	Conference via wifi with psk may disconnect
CSCuo82402	Contact does not disappear after HFU is disconnected from BE
CSCuo82446	CLI:"show call detail line 1" return unexpected null
CSCuo82498	Phone reject CUCM SIP SUBSCRIBE message in call duration test
CSCuo82535	Toast queue is not cleared when whisper session has ended
CSCuo82546	BE can not sync contact from Samsung SIM card
CSCuo84744	Call is disconnected by pressing mute key on GN 2000 for several times
CSCuo84750	Mute status NOT sync to headset after switch audio path
CSCuo84763	PLK line is disappeared after HFU line status changed
CSCuo84769	HFU call ended up when press speak Hardkey in SIP line
CSCuo84772	BT and HFU line status can be changed during active HFU call
CSCuo84831	Conference via wifi with psk disconnect after session timeout
CSCuo84921	rapidly disconnect/connect HFU phone several times, audio path disappear
CSCuo85029	phone doesn't USB charge after plug/unplug iphone for several times
CSCuo85149	Auto Answer still work when HFU line connected
CSCuo85499	wireless phone is not able to obtain an IPv6 address when DAD enabled
CSCuo86592	No softkey displayed after modify the button template
CSCuo87108	8861 cannot make call due to network busy if 12Mbps disabled on WLC
CSCuo87177	Phone can not register after setting admin vlan
CSCuo87682	"Decline" soft key should be disabled in incoming call alert on SRST
CSCuo87718	HFU DN does not hidden after disable/enable from CUCM
CSCuo87758	wireless 8861 phone takes long time to register after associate to AP
CSCuo89344	it can't return to debug shell after executing settmask
CSCuo89379	88xx phones do not set hosts HTTP header properly
CSCuo89418	No audio for connected call if unplug aux line for ehook headset GN9330
CSCuo89460	No BE Wallpaper after installed devpack.
CSCuo89850	Service Dial:<number> not work on service URL
CSCuo89883	[PLAR]phone can't clear old config when apply sip dia rule
CSCuo89906	One PP phone may make call fail and unregister
CSCuo89992	Miss call count may confuse the user sometimes
CSCuo90088	Can not cancel out going call, session bubble can not disappear.
CSCuo90121	Max size of background image should be 1M
CSCuo90186	8861 crash -continuously initiate call, with CAC enabled
CSCuo90211	Phone may suddenly restarts
CSCuo90309	Info in Trust List Installed UI could not be displayed completely
CSCuo90322	UI freeze in stress call test via wifi
CSCuo90335	Phone ignore URI directory after %25 in the call session bubble
CSCuo90375	%25 should display as % in the BLF sd
CSCuo90406	Info is not align with the frame
CSCuo90422	DAD can't be disabled when IPv6 is manually set over Wi-Fi
CSCuo91754	Phone reset after 30 hours missed call + 48 hours idle
CSCuo91778	PBAP contacts item will flash quickly when press save
CSCuo91807	Network busy in stresscall test via wifi
CSCuo91834	two '100 half' items will be list below SW/PC port setup
CSCuo91857	Noise voice play after pressing the speaker or new call softkey
CSCuo91875	one 8861 wireless phone cannot boot after upgrading to 10-2-1-16
CSCuo91983	BLF status not display correctly if blf sd include a special character
CSCuo92047	Rarely phone lost registration after idle for a while
CSCuo92062	PBAP sync icon will never disappear if disable contacts during sync
CSCuo92106	Plantronics headset has noise when phone Idle state.
CSCuo92160	Phone can't register to cucm after restart wlan
CSCuo92242	SIP crashed during WLAN duration test
CSCuo92371	Phone UI freeze after running basic call 5 hours
CSCuo92400	occasional reboot while switching RF channels
CSCuo92489	phone may stop scanning while off-hooking during channel switch
CSCuo92541	Unexpected simplified new call ui displayed if we press session key.
CSCuo92596	Failed to register to sub after disconnect net to pub during upgrade
CSCuo92639	sometimes cucm is not shown in phone information UI menu
CSCuo94496	Call history in BE aren't synced correctly after HFU connect/disconnect
CSCuo94536	Phone is frozen occasionally after changing Alt-TFTP address
CSCuo94552	Blank screen always shown on phone UI if cancel the HTTP connection
CSCup01256	Brightness level different on different phones

Resolved Caveats

There are no resolved caveats for this release.

Cisco IP Phone Firmware Support Policy

For information on the support policy for phones, see the Cisco IP Phone Firmware Support Policy.

Documentation, Service Requests, and Additional Information

For information on obtaining documentation, submitting a service request, and gathering additional information, 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/c/en/us/td/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.

Cisco IP Phone 8841, 8851, and 8861 Release Notes for Firmware Release 10.2(1)

Bias-Free Language

Book Title

Cisco IP Phone 8841, 8851, and 8861 Release Notes for Firmware Release 10.2(1)

Chapter Title