Revision History



June 19, 2019

Initial publication

August 19, 2019

Added the list of fixes resolved in this SU in the Caveats section

Corrected the JTAPI Plugin Version to: cm-jtapi-plugin-

October 02, 2019

Added two important CDETS, CSCvq80853 and CSCvp75162 to the Open Caveats section

Added the PSIRT fixes included in the October 2nd Advisory bundle to the list of Resolved Caveats.

August 24, 2020

Added CSCvv13565 to Open Caveats section



To view the release notes for previous versions of Cisco Unified Communications Manager, choose the Cisco Unified Communications Manager version from the following URL:


Please review all sections in this document pertaining to installation before you install this Service Update (SU). Failure to install this SU as described may result in inconsistent Cisco Unified Communications Manager behavior.

This 12.5(1)SU1 ReadMe file contains important information about installation procedures and resolved caveats for Cisco Unified Communications Manager release 12.5(1)SU1. This SU can be applied to Cisco Unified Communications Manager and Session Management Edition.


Before you install Cisco Unified Communications Manager, Cisco recommends that you review the Important Notes for information about issues that may affect your system.

System Requirements

The following sections comprise the system requirements for this release.

Server Support

In this release, you cannot install or run Cisco Unified Communications Manager on server hardware; you must run these applications on virtual machines. Please refer to the “Hardware” section of the Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1) for additional details:

Uninterruptible Power Supply

Ensure that you connect each node to an uninterruptible power supply (UPS) to provide backup power and protect your system.


Failure to connect the Cisco Unified Communication Manager nodes to a UPS may result in damage to physical media and require a new installation of Cisco Unified CM.

Version and Description

This SU is a cumulative update that incorporates all of the fixes and changes from Cisco Unified Communications Manager 12.5(1) along with additional changes that are specific to this SU.


You can only install this SU on Cisco Unified Communications Manager Release 8.6(x) through 11.x, 12.0(1x), 12.5(1), or any 12.5(1)ES from to Upgrades from any earlier supported versions require a PCD migration. Upgrades from 6x through 11x need to be requested via PUT ( to obtain the necessary license.

For a list of all supported upgrade paths and the supported upgrade method, please see the Compatibility Matrix at:


Please note that if you install an SU it may contain fixes that are not included in the newer Unified CM releases. For example, a fix in an 11.5(1)SU, 11.5(1)SU6, may not be included in 12.0(1) because the fix was not available prior to the release of 12.0(1). In this example, an SU or ES on the 12.0(1) branch may be required to retain the same fixes.

Important Notes

Compatibility between collaboration products is detailed at the following link. You must insure your versions are compatible before beginning your upgrade:

Cisco provides the following guidance to help you successfully upgrade Cisco Unified Communications Manager software:

  • To minimize call-processing interruptions during the upgrade process, register all devices to servers that are running the same version of Cisco Unified Communications Manager software. Make sure that you register all devices to the backup Cisco Unified Communications Manager server or to the primary Cisco Unified Communications Manager server, but not to both the backup and primary servers.

Before You Begin

Before you upgrade the software version of Cisco Unified Communications Manager, verify your current software version.

To do that, open Cisco Unified Communications Manager Administration. The following information displays:

Cisco Unified CM Administration System version: x.x.x

Installation Instructions


Apply this SU to all of your Cisco Unified Communications Manager servers, beginning with the publisher server and TFTP server

Refer to the Upgrade and Migration Guide for Cisco Unified Communications Manager and IM and Presence Service, Release 12.5(1) for detailed information about doing this upgrade:


Because the build is a non-bootable ISO, it proves useful only for upgrades. You cannot use it for new installations. You may however install with the base version and apply as a patch during the installation.

Release 12.5(1)SU1 is available in both restricted (which is the release type that has always been available from Cisco) and unrestricted versions of software to comply with import / export restrictions to various countries. The unrestricted version is available in limited markets. Please refer to the “Export Restricted and Export Unrestricted Software” section in the Understanding Upgrades and Migrations chapter, of the Upgrade and Migration Guide for Cisco Unified Communications Manager and the IM and Presence Service, Release 12.5(1) referenced above, for a more detailed description.


Once installed, UNRST releases can never be converted or upgraded to releases which support full encryption capabilities

The file names and hash values you will use for this upgrade are:

Table 1. Restricted ISO Names and Checksum Values

ISO Name:





f1809b2296d558d248f8fb7d6ff18a60744c7dab08977aaa2ea47ae8dddc913db3ea886e969e6708 15bdbd7b411ecb26d73c4e8805efb1f4ef9095a773d42d0c
Table 2. UnRestricted ISO Names and Checksum Values

ISO Name:





856c57bccf01d659537e36c24f5401df26108300355c424032fde764f57abced02f6a2d49e75cd91 9436ce789ce6b05d98e5b8fe1e0d15b3e6911c68f2f98130

Reverting to a Previous Version


Revert the SU on all servers in the cluster in the same order in which you performed the installation.

Refer to the “Switch to Previous Version” section in the Upgrade Procedures chapter at Upgrade and Migration Guide for Cisco Unified Communications Manager and IM and Presence Service, Release 12.5(1) for detailed instructions on “Reverting to a Previous Version.”


Caveats describe unexpected behavior on a Cisco Unified Communications server. The following sections contain lists and descriptions of resolved and open caveats in this release.

Resolved Caveats

Resolved Caveats for Cisco Unified Communications Manager Release 12.5(1)SU1 describes possible unexpected behaviors in previous Cisco Unified Communications Manager 12.5(1) releases.

Resolved CUCM Caveats in 12.5(1)SU1 (everything fixed in SU1 since base 12.5(1))
Click Here for the list

Open Caveats

Open Caveats for Cisco Unified Communications Manager Release 12.5(1)SU1 describes a few of the possible unexpected behaviors still remaining in Cisco Unified Communications Manager Release 12.5(1)SU1.

Open CUCM Caveats in 12.5(1)SU1
CSCvv13565: ITLRecovery cert is regenerated when upgrading 11.5 to 12.5 which causes phones to lose trust
CSCvq80853: CUCM Memory leak issue with CiscoJ causing TOMCAT to be unresponsive
CSCvp75162: Replication setup failed for 1 sub and no retry attempts because of missing cdrThreeStepStatu

CUCM Caveats 12.5(1) Complete List

For a complete list of caveats applicable to 12.5(1), use the following Bug Search Tool link:*&pf=prdNm&pfVal=268439621&rls=12.5(1.1&sb=afr&bt=null

To determine the caveats that were open for a specific release, download the results to Excel and use the Known Fixed Release values above to filter out the applicable releases. The Known Fixed Release for base 12.5(1) is 12.5(1.10000.22). Once the filters are applied, additional sorting / filtering can be applied for Bug Severity, Bug Status, and keywords. Here are some examples of how to generate lists for a specific release:

All SU1 Unresolved Caveats: To get a list of caveats that are applicable to 11.5(1) but are not fixed in SU1, use an Advanced Filter in Excel with an AND condition on the Known Fixed Releases column with the following values:


Security Advisory Caveats: To get a list of caveats that are applicable to Security Advisories or other security related issues, after filtering for a specific release using the examples above, an additional filter for the keyword PSIRT can be applied to the Release Note Enclosure column.

Firmware Versions

SUs contain firmware loads, however, Cisco recommends that you always download the latest firmware load from the Software Download Center.

Phone Firmware

To download phone firmware, follow this procedure:

  1. Go to

  2. Click on Browse All

  3. Click on Collaboration Endpoints

  4. Choose the desired Endpoint Type

  5. Choose the desired Endpoint Model

Device Packages

To download phone firmware, follow this procedure:

  1. Go to

  2. Click on Browse All

  3. Click on Unified Communications

  4. Click on Call Control

  5. Click on Unified Communications Manager (CallManager)

  6. Choose the desired UCM version

  7. Click on the Device Packages link

Firmware Versions in this Release

Device type                               Load name                       Version
----------------------------------------  ------------------------------  ----------
1                                         1-5-1-15                        5.1(15.0) 
3905                                      3905.9-4-1SR3                   9.4(1SR3.0)
3911_3951-sip                             3911_3951-sip.8-1-4a            8.1(4.0)  
6608                                      6608-              4.0(0.32) 
6608cfb                                   6608cfb-           4.0(0.3)  
6608mtp                                   6608mtp-           4.0(0.6)  
6624                                      6624-              4.0(0.13) 
6901-sccp                                 6901-sccp.9-3-1-SR2-2           9.3(1.0)  
6901-sip                                  6901-sip.9-3-1-SR2-3            9.3(1.0)  
6911-sccp                                 6911-sccp.9-3-1-SR2-3           9.3(1.0)  
6911-sip                                  6911-sip.9-3-1-SR2-4            9.3(1.0)  
6945-SCCP                                 6945-SCCP-9-4-1-3SR3            9.4(1.3)  
6945-SIP                                  6945-SIP-9-4-1-3SR3             9.4(1.3)  
69xx-SCCP                                 69xx-SCCP-9-4-1-3SR3            9.4(1.3)  
69xx-SIP                                  69xx-SIP-9-4-1-3SR3             9.4(1.3)  
7832-sip                                  7832-sip.12-5-1SR3-74.k3        12.5(1SR3.74)
78xx                                      78xx.12-5-1SR3-74.k3            12.5(1SR3.74)
7911_7906-sccp                            7911_7906-sccp.9-4-2SR3-1       9.4(2SR3.1)
7911_7906-sip                             7911_7906-sip.9-4-2SR3-1        9.4(2SR3.1)
7914-sccp                                 7914-sccp.5-0-4                 5.0(4.0)  
7915                                      7915.1-0-4-2                    1.0(4.2)  
7916                                      7916.1-0-4-2                    1.0(4.2)  
7925-sccp                                 7925-sccp.1-4-8SR1-5.k3         1.4(8SR1.5)
7926-sccp                                 7926-sccp.1-4-8SR1-5.k3         1.4(8SR1.5)
7931-sccp                                 7931-sccp.9-4-2SR2-2            9.4(2SR2.2)
7931-sip                                  7931-sip.9-4-2SR2-2             9.4(2SR2.2)
7936-sccp                                 7936-sccp.3-3-21                3.3(21.0) 
7937                                      7937-1-4-4-SCCP                 1.4(4.0)  
7937                                      7937-1-4-5-7-SCCP               1.4(5.7)  
7940-7960                                 7940-7960-8.12.00-sip           8.12(00.0)
7940-7960-sccp                            7940-7960-sccp.8-1-2SR2         8.1(2SR2.0)
7941_7961-sccp                            7941_7961-sccp.9-4-2SR3-1       9.4(2SR3.1)
7941_7961-sip                             7941_7961-sip.9-4-2SR3-1        9.4(2SR3.1)
7942_7962-sccp                            7942_7962-sccp.9-4-2SR3-1       9.4(2SR3.1)
7942_7962-sip                             7942_7962-sip.9-4-2SR3-1        9.4(2SR3.1)
7945_7965-sccp                            7945_7965-sccp.9-4-2SR3-1       9.4(2SR3.1)
7945_7965-sip                             7945_7965-sip.9-4-2SR3-1        9.4(2SR3.1)
7975-sccp                                 7975-sccp.9-4-2SR3-1            9.4(2SR3.1)
7975-sip                                  7975-sip.9-4-2SR3-1             9.4(2SR3.1)
7985                                      7985-4-1-7-0-sccp               4.1(7.0)  
8821-sip                                  8821-sip.11-0-5-17.k3           11.0(5.17)
8831-sip                                  8831-sip.10-3-1SR4b-1           10.3(1SR4.0)
8832-sip                                  8832-sip.12-5-1SR3-74.k3        12.5(1SR3.74)
8845_65-sip                               8845_65-sip.12-5-1SR3-74.k3     12.5(1SR3.74)
88xx-sip                                  88xx-sip.12-5-1SR3-74.k3        12.5(1SR3.74)
894x-sccp                                 894x-sccp.9-4-2SR3-1            9.4(2SR3.1)
894x-sip                                  894x-sip.9-4-2SR3-1             9.4(2SR3.1)
8961                                      8961.9-4-2SR4-1.k3              9.4(2SR4.1)
9951                                      9951.9-4-2SR4-1.k3              9.4(2SR4.1)
9971                                      9971.9-4-2SR4-1.k3              9.4(2SR4.1)
ata                                       ata-3.2.4-sccp                  3.2(4.0)  
ata187                                    ata187.9-2-3-1                  9.2(3.1)  
ata190                                    ata190.1-2-2-003                1.2(2.3)  
ata191                                    ata191.12-0-1-29                12.0(1.29)

Plug-In Report

TZDATA file                               Version
----------------------------------------  ----------
platform-tzdata-2018g-1.el7.noarch.rpm    2018-g    

Obtaining Documentation and Submitting a Service Request

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:

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.