Introduction to Cisco Collaboration Systems Release 12.5(1)

As part of our standard methodology for each Cisco Collaboration Systems Release, we:

  • Perform system-wide testing of Cisco Collaboration products to supplement the product-level testing performed on each collaboration product.

  • Recommend compatible software releases that were verified by the testing teams. The recommendations are not exclusive and are in addition to interoperability recommendations for each of the individual applications or products.

    For software compatibility data, see the Cisco Collaboration Systems Release Compatibility Matrix.


    Software compatibility data for all Cisco Collaboration Systems releases before 10.5(1) is available from the Cisco Collaboration Systems Compatibility Tool.


    Not all Collaboration System product release versions may be available at the same time. For latest product version availability, see individual product support pages at, Support and Downloads.

This document focuses on the Collaboration components tested as part of the Cisco Collaboration Systems Release. For information focused on Contact Center components that were tested as part of Cisco Collaboration Systems Release, see:

This document provides release notes details based on the system-wide testing which includes the following types of components:

  • Call Control components, such as Cisco Unified Communications Manager, Cisco Unified Communications Manager IM and Presence Service, Cisco Business Edition, Cisco Unified Communications Manager Express, and Cisco Unified Survivable Remote Site Telephony.

  • Conferencing components, such as Cisco Meeting Server, Cisco Meeting App, Cisco Meeting Management, Cisco TelePresence Management Suite, Cisco TelePresence Management Suite Provisioning Extension, and Cisco TelePresence Management Suite Extension for Microsoft Exchange.

  • Enterprise Edge components, such as Cisco TelePresence Video Communication Server, Cisco Expressway Series, and Cisco Unified Border Element.

  • Server Applications, such as Cisco Emergency Responder, Cisco Paging Server, and Cisco Unified Attendant Consoles.

  • Cloud and Hybrid Services, such as Cisco Webex Teams, Cisco Webex Meetings for Cisco Collaboration Meeting Rooms (CMR) Cloud, Cisco Webex Meetings Server, Cisco Webex Meetings, and Cloud Webex Edge Video Mesh.

  • Voicemail and Messaging components, such as Cisco Unity Connection and Cisco Unity Express.

  • Endpoint components, such as Cisco IP Phone Series, Cisco TelePresence IX5000, Cisco Webex DX80, Cisco TelePresence MX and SX Series, Cisco Jabber, and Cisco Virtualization Experience Media Engine.

  • Service Management components, such as Cisco Prime Collaboration.

  • Communication Gateway components, such as Cisco Integrated Services Routers (ISR).

Tested Functionality

System-wide testing was done for features and upgrade paths.

Feature Testing

In this release, the following features were system-tested.


  • Jabber for iOS Push Notifications

  • Cisco Web Security Applicance for iOS Push Notifications

    For details on iOS Push Notifications, see: Push Notifications Deployment for Cisco Jabber on iPhone and iPad with Cisco Unified Communications Manager.

  • Mobile and Remote Access (MRA):

    • Interactive Connectivity Establishment (ICE) with SIP OAuth (for on-premise and MRA)

    • MRA recording through Built-in Bridge (BiB) for Jabber

    • Persistent chat for Jabber mobile

    • Jabber multi-line support over MRA

    • IM and Presence Service Centralized Deployment—for large-scale deployments (225K users)

Cisco Webex Teams Hybrid Services

  • Cisco Jabber and Webex Teams interoperability via IM and Presence Service Connector

  • Diversion on Decline


  • RFC 2833 DTMF Support on SCCP Media Resources

  • VoLTE Interoperability for TelePresence and Jabber


  • Multi-fork recording from Unified CM—testing recording resilience for FS compliance


Simplified Administration

  • Simplified upgrade with cluster-wide configuration

  • Cisco Prime Collaboration Deployment enhancement – batch/bulk task chaining

  • Jabber configuration file management

  • Device onboarding via activation codes (on-premise phones)


  • Cisco Meeting Server (CMS) enhancements that support Cisco Telepresence MCU migrations to CMS

  • Media Adaptation and Resilience (MARI) enhancement that allows unknown SDP passthrough for on-premise endpoint that connects to a cloud-hosted conference

  • @CMS Scheduling

  • Interoperability enhancement with Skype for Business

  • Conferencing enhancements for on-premise endpoints that connect to cloud-hosted conferences (including when a Hybrid Media Node is deployed):

    • Roster List

    • Dual Screen UX

  • Active Control for on-premise Jabber

Upgrade Paths

The system-wide functionality testing included verifying upgrade paths across various product components for a single stage upgrade from Cisco Collaboration Systems Release 12.0(1) to Cisco Collaboration Systems Release 12.5(1).

For a list of versions that are compatible with Cisco Collaboration Systems Release 12.5, see the Cisco Collaboration Systems Compatibility Matrix.

New and Changed Features

For details about what is new for Cisco Collaboration Systems Release 12.5(1), see the Solution Overview.

For details about new and changed collaboration product features, access individual product release notes from Product Documentation.

System Requirements

This section provides information about system requirements for this Cisco Collaboration Systems Release.

End-of-Sale Components

The following components have reached end-of-sale (EOS) status but are still supported.

The EOS date is the last date to order the product through Cisco point-of-sale mechanisms. The product is no longer for sale. Another process, the end-of-life (EOL) cycle, guides the final business operations associated with the product.

The EOL process consists of a series of technical and business milestones and activities that, when completed, make a product obsolete. After a product becomes obsolete, it is not sold, manufactured, improved, repaired, maintained, or supported.

For information about recommended replacements and a comprehensive list of announcements, see Products & Services End-of-Sale and End-of-Life Products.

For information about specific products, go to Product/Technology Support. Then click End-of-Sale and End-of-Life and select products or technologies from the lists to the right.

Go to End-of-Life Policy for more information about the EOL policy.

Deployment Considerations

This section lists deployment considerations for Cisco Collaboration Systems Release. Cisco Collaboration Systems validation does not test every rebuild. Therefore, more regression testing in a customer or Cisco-specific certification lab is recommended before deployment.


When deploying Cisco Collaboration Systems, consider the following.

  • At the minimum, deploy the software release that is recommended in:

    Cisco Collaboration Systems Compatibility Matrix


    For compatibility information before Collaboration Systems Release 10.5, refer to the Compatibility Tool.

  • For other software components, use the most current rebuild of a maintenance release. For IOS, information about the latest releases, including deferral advisories, is available at:

  • If the recommended release has been deferred to a subsequent release, use the subsequent release.

  • Before deploying a release, examine the open caveats in the chosen release to determine if any affect your implementation. View open caveats through the Bug Search tool, which is located at:

  • Deploy the chosen release in a lab environment that uses the same product components as your product components before moving to a production environment.

Component Versions

For current Cisco Collaboration Systems Release compatible component versions, refer to the Cisco Collaboration Systems Compatibility Matrix.


For compatibility information before Collaboration Systems Release 10.5, refer to the Compatibility Tool.


Product-specific compatibility documents provide complete compatibility information between components.


Not all Collaboration System product release versions may be available at the same time. For latest product version availability, see individual product support pages at, Support and Downloads.


You can set up a virtualized environment by running collaboration applications on a virtual machine on a Unified Computing System (UCS). For more details, including UCS hardware information and third-party requirements, see:


Cisco Hosted Collaboration Solution (Cisco HCS) is a hosted solution that includes various Cisco Collaboration Systems release components. For more information about Cisco HCS, see: Cisco Hosted Collaboration Solution and Cisco HCS Product Support.

Related Documentation

Product Documentation

The following table provides links to product documentation for the major Collaboration Systems Release components. The table provides links to:

  • Product Overview pages, from which you can access marketing material, such as product data sheets.

  • Product Documentation pages, from which you can access technical documents such as release notes, design, installation, configuration, and troubleshooting guides.

Table 1. Related Documentation Links



Call Control

Cisco Unified Communications Manager

Cisco Unified Communications Manager IM & Presence Service

Cisco Business Edition 6000

Cisco Business Edition 7000

Cisco Unified Communications Manager Express

Cisco Unified Survivable Remote Site Telephony

Contact Center

Cisco MediaSense (EOS)


Cisco Meeting Server

Cisco Meeting App

Cisco Meeting Management

Cisco TelePresence Management Suite

Cisco TelePresence Management Suite Provisioning Extension

Cisco TelePresence Management Suite Extension for Microsoft Exchange

Cisco TelePresence Server on Virtual Machine (EOS)

Cisco TelePresence Server on Multiparty Media 820 (EOS)

Cisco TelePresence Conductor (EOS)

Cisco TelePresence MCU 5300 Series (EOS)

Cisco Collaboration Meeting Rooms (CMR) Cloud

Cisco Collaboration Meeting Rooms (CMR) Hybrid

Enterprise Edge

Cisco Expressway Series

Cisco Unified Border Element

Server Applications

Cisco Emergency Responder

Cisco Unified Attendant Console Standard

Cisco Unified Attendant Console Advanced

Cloud and Hybrid Services Applications

Cisco Webex Teams

Cisco Webex Devices

Cisco Webex Board

Cisco Webex Hybrid Services

Cisco Directory Connector

Cisco Expressway Series

Cisco Webex Meetings Server

Cisco Webex Meetings

Voicemail and Messaging

Cisco Unity Connection

Cisco Unity Express


Cisco DX70

Cisco TelePresence DX70

Cisco Webex DX80

Cisco Webex Room Kit

Cisco Webex Room Kit Plus

Cisco DX650 (EOS)

Cisco TelePresence System EX Series (EOS)

Cisco TelePresence System 500-32 (EOS)

Cisco TelePresence System 500-37 (EOS)

Cisco TelePresence IX5000

Cisco TelePresence MX Series

Cisco TelePresence SX Series

Cisco TelePresence System 1100 (EOS)

Cisco TelePresence Integrator C Series (EOS)

Cisco TelePresence Precision 60 Camera

Cisco IP Phone 7800 Series

Cisco IP Phone 8800 Series

Cisco Jabber for Android

Cisco Jabber iPhone and iPad

Cisco Jabber for Mac

Cisco Jabber for Windows

Service Management

Cisco Prime Collaboration (Provisioning, Assurance)

Cisco Prime Collaboration (Deployment)

Communication Gateways

Cisco IOS 15 M&T

Cisco IOS XE 16

Cisco 2900 Series Integrated Services Routers (EOS)

Cisco 3900 Series Integrated Services Routers

Cisco 4400 Series Integrated Services Routers

Limitations and Restrictions

If you are a Cisco partner or a registered user with a Cisco service contract, you can use the Bug Search tool to find caveats of any severity for any release. Access Bug Search at:

We offer a Cisco Notification Service that allows you to set up one or more profiles. These profiles enable you to receive email notification of new Field Notices, Product Alerts, or End of Sale information for the products that you have selected. The Product Alert Tool is available at:

Important Notes

This section includes important notes related to the testing of this Cisco Collaboration Systems Release.

Duplicate Certificates Leads to CPU Spike during Certificate Sync

In a customer environment where multiple certificate operations have taken place, it is possible to end up in a situation where multiple certificates for the same Common Name exist in the database. When this occurs, the CPU spikes every 30 minutes during standard certificate maintenance by the Certificate Sync service. The following types of lines may appear in Change Notification logs:

  • 2018-10-26 08:48:02,731 INFO [Timer-0] - IN -- - deleteTrustCertInFileSystem.. unit : tomcat-trust :: FileName :: /usr/local/platform/.security/tomcat/trust-certs/<CN2>.pem

  • 2018-10-26 08:49:01,943 INFO [Timer-0] - IN -- - deleteTrustCertInFileSystem.. unit : CallManager-trust :: FileName :: /usr/local/cm/.security/CallManager/trust-certs/<CN1>.pem

To verify whether there are duplicate certificates in the DB, run the below queries from CLI:

  • For CallManager-trust:

    run sql select serialnumber, subjectname from certificate A, certificateservicecertificatemap B where B.fkcertificate=A.pkid and B.tkcertificateservice=4 and subjectname like '%<CN1>%'

  • For Tomcat-trust:

    run sql select serialnumber, subjectname from certificate A, certificateservicecertificatemap B where B.fkcertificate=A.pkid and B.tkcertificateservice=6 and subjectname like '%<CN2>%'

For additional details, see CSCvn65359.

Memory Corruption Issue Causes System Crash

Under extended heavy load conditions, Cisco Unified Communications Manager has been observed to crash due to a memory allocation issue. This issue results in a ccm process coredump. The issue is currently being investigated.

For additional details, see CSCvn32181.

System Crashes when Allocating Memory for Multiple Threads Simultaneously

Cisco Unified Communications Manager has been observed to crash in situations with very heavy call loads. This may occur due to multiple threads allocating memory simultaneously. In normal conditions, this situation does not occur as simultaneous memory allocation would not occur.

For additional details, see CSCvn77809.

DHCPv6 as Default for Dual-stack DX

If you configure a DX with CE build as dual-stack endpoint on Unified CM, you won’t see an IPv6 address on the endpoint. To allow the endpoint to use an IPv6 address, turn on the DHCP IPv6 setting under the endpoint’s network configuration. For more details, see CSCvi49092.

show dspfarm profile Information Not Displayed

In calls from endpoints that don’t support Keypad Markup Language (KPML), the show dspfarm profile command doesn’t show the actual resources being used. The profile shows only the SCCP connections. For more details, see CSCvd91119.

Caller-ID Not Changed After Transfer

On Cisco Webex Call phones, the caller-ID is not updated properly after a transfer from enterprise phones. For more details, see CSCve56223.

Support for Hostname When Configuring InformaCast Wizard

If you enter the FQDN of the InformaCast server on the Connecting to InformaCast page of the wizard, the install wizard for Emergency Notifications Paging may fail to connect to InformaCast. To work around this potential issue, enter the IP Address instead of the FQDN of the InformaCast.

For more details, see CSCvf58052.

Show Connection Status Not Updated After Unified Communications Manager Failover for Jabber in Mobile and Remote Access Deployment

When Jabber is registered using Mobile and Remote Access, the "Connection status" window shows connected address as the primary Unified Communications Manager, even after a Unified Communications Manager failover has happened, and the client is registered to the secondary Unified Communications Manager. For more information, see CSCuo89949.

Open Caveats

The following table lists known caveats, grouped by severity, related to Cisco Collaboration Systems Release testing. It also includes caveats from previous releases, which were not resolved at the time this document was written. For more information about each defect, click the linked caveat number in the Identifier column.

For information about a defect not listed in the table, go to Bug Search Tool.

For information about known issues with Cisco Webex Hybrid Services, go to Help Central: Cisco Cloud Collaboration Management - Known Issues.

Table 2. Collaboration Open Caveats



Severity 2-3 Caveats


Caller-ID not changed after transfer since Expressway-c doesnt update P-Asserted-Identity


Expressway changes for APNS calls failing with jabber app killed/device standby and UCM failover


TCP conn. failed between source (28405) & destination (5071) on same Expressway-C server


Under extended traffic load, Memory corruption caused ccm process core dump


Utils os kerneldump status shows enabled when kerneldump is not enabled


APNS cluster onboarded but IMP xcpconfigmgr failing to fetch token due to missing certs


Time elapsed details while doing upgrades


CertSync causes CPU spikes due to duplicate certs in DB/file system, even with fix for CSCvg47019


Jabberd process core dump just after L2 system upgrade.


Threads allocating memory at the same time leading to deadlock condition that cause CM process core


RTMT shows AMC service down in publisher


Install of cleanup gets stuck in some conditions


CUCM Upgrade command asks to re-use credentials, but also uses directory path of SFTP from Pub


For troubleshooting information, tips, and recommendations related to Cisco Collaboration Systems Releases, see individual product Troubleshooting Guides located in Component Documentation.