First Published: August 5, 2024

Release Notes

Use these release notes with the following Cisco IP Phone 6800 Series Multiplatform Phones running SIP Firmware Release 12.0(5).

  • Cisco IP Phone 6821 Multiplatform Phones

  • Cisco IP Phone 6841 Multiplatform Phones

  • Cisco IP Phone 6851 Multiplatform Phones

  • Cisco IP Phone 6861 Multiplatform Phones

  • Cisco IP Phone 6871 Multiplatform Phones


Note

This document doesn't include the DECT phones.

The following table describes the individual phone requirements.

Phone

Support Servers

Cisco IP Phone 6800 Series Multiplatform Phones

Cisco BroadWorks RI

MetaSphere CFS version 9.5

Asterisk 18.0

New and Changed Features

Support for Auto Selection of SDP IP Preference

With the Firmware Release 12.0(5), you can configure auto selection of IP addresses for SIP signaling and RTP streams.

You can use the SDP IP Preference parameter in the phone administration web page from Voice > SIP to configure this feature.

Where to Find More Information

  • Cisco IP Desk Phone with Multiplatform Firmware (MPP) － Administration Guide

  • XML Reference Guide for Cisco IP Phone Multiplatform Phones

Support for DNS64 and NAT64

With the Firmware Release 12.0(5), you can configure DNS64 + NAT64 to allow MPP to operate within IPv6 deployments in compliance with RFC 7050.

Where to Find More Information

  • Cisco IP Desk Phone with Multiplatform Firmware (MPP) － Administration Guide

  • XML Reference Guide for Cisco IP Phone Multiplatform Phones

Support for Cisco BT Headset Dongle

With the Firmware Release 12.0(5), you can now use the Cisco Headset USB-C Adapter with Cisco IP Desk Phone with Multiplatform Firmware (MPP) to enhance audio quality and provide stable connectivity for users utilizing Cisco headsets with USB-C interfaces.

Cisco IP Desk Phone 6871 supports this feature.

Where to Find More Information

  • Cisco IP Phone 6800 Series Multiplatform Phones User Guide

Upgrade Firmware

You can upgrade the phone firmware with TFTP, HTTP, or HTTPS. After the upgrade completes, the phone reboots automatically.

Procedure

Step 1

Click this link:

https://software.cisco.com/download/home/286318380

On the Software Download web page that is displayed, ensure that IP Phone 6800 Series with Multiplatform Firmware is selected in the middle pane.

Step 2

Select your phone model in the right pane.

Step 3

On the next page that is displayed, select Multiplatform Firmware.

Step 4

On the next page that is displayed, select 12.0.5 in the All Releases > MPPv12 folder.

Step 5

(Optional) Place your mouse pointer on the file name to see the file details and checksum values.

Step 6

Download the corresponding file.

  • 6821: cmterm-6821.12-0-5MPP0001-325_REL.zip

  • Other phones in 6800 series: cmterm-68xx.12-0-5MPP0001-325_REL.zip

Step 7

Click Accept License Agreement.

Step 8

Unzip the file and place the files in the appropriate location on your upgrade server.

The appropriate location is the TFTP, HTTP, or HTTPS download folder, depending on the protocol that you want to use for the upgrade.

Step 9

Upgrade the phone firmware with one of these methods.

  • Upgrade the phone firmware from the phone administration web page:

    1. On the phone administration web page, go to Admin Login > Advanced, Voice > Provisioning > Firmware Upgrade.

    2. In the Upgrade Rule field, enter the load file URL as described below.

      Load file URL format:

      <upgrade protocol>://<upgrade server ip address>[:<port>]>/<path>/<file name>.loads

      Examples:

      • 6821:

        https://10.73.10.223/firmware/sip6821.12-0-5MPP0001-325.loads

      • Other phones in 6800 series:

        https://10.73.10.223/firmware/sip68xx.12-0-5MPP0001-325.loads

    3. Click Submit All Changes.

  • Upgrade the phone firmware directly from your web browser:

    In the address bar of your web browser, enter the phone upgrade URL as described below.

    Phone upgrade URL format:

    <phone protocol>://<phone ip address[:port]>/admin/upgrade?<load file URL>

    Load file URL format:

    <upgrade protocol>://<upgrade server ip address>[:<port>]>/<path>/<file name>.loads

    Examples:

    • 6821:

      https://10.74.10.225/admin/upgrade?https://10.73.10.223/firmware/sip6821.12-0-5MPP0001-325.loads

    • Other phones in 6800 series:

      https://10.74.10.225/admin/upgrade?https://10.73.10.223/firmware/sip68xx.12-0-5MPP0001-325.loads

Note

 

Specify the <file name>.loads file in the URL. The <file name>.zip file contains other files.

Limitations and Restrictions

Phone Behavior During Times of Network Congestion

Anything that degrades network performance can affect phone audio and, in some cases, can cause a call to drop. Sources of network degradation can include, but are not limited to, the following activities:

  • 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

View Caveats

You can search for caveats (bugs) with the Cisco Bug Search tool.

Known caveats are graded according to severity level, and are either open or resolved.

Before you begin

You have your Cisco.com user ID and password.

Procedure

Step 1

Click one of the following links:

Step 2

When prompted, log in with your Cisco.com user ID and password.

Step 3

(Optional) For information about a specific caveat, enter the bug ID number (CSCxxnnnnn) in the Search for field, and press Enter.

Open Caveats

The following list contains the severity 1, 2, and 3 defects that are open for the Cisco IP Phone 6800 Series Multiplatform Phones that use Firmware Release 12.0(5).

For more information about an individual defect, you can access the online history for the defect by accessing the Bug Search tool and entering the Identifier (CSCxxnnnnn). You must be a registered Cisco.com user to access this defect information.

Because the 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 the resolved defects or to view specific bugs, access the Bug Search Toolkit as described in the View Caveats.

  • CSCwf10956—Macro $SERVIP is not expanded in Log Request Msg in syslog

  • CSCwb46008—Many PRTs with logs missing for around 5 seconds

  • CSCwk90483—Small probability of USB headset detection failure

Resolved Caveats

The following list contains the severity 1, 2, and 3 defects that are resolved for the Cisco IP Phone 6800 Series Multiplatform Phones that use Firmware Release 12.0(5).

For more information about an individual defect, you can access the online history for the defect by accessing the Bug Search tool and entering the Identifier (CSCxxnnnnn). You must be a registered Cisco.com user to access this defect information.

Because the 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 the resolved defects or to view specific bugs, access the Bug Search Toolkit as described in the View Caveats.

  • CSCwk24341—6821 and 6871 crash when going off-hook

  • CSCwi87651—accented chars cause parsing error for XSI lookup

  • CSCwk25793—ES-256-CBC Encryption Cisco IP Phone with Multiplatform Firmware (MPP) Administration Guides