Release Notes for Cisco Unified Communications Manager, Release 9.1(1)
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These release notes describe new features, requirements, restrictions, and caveats for both Unified Communications Manager and IM and Presence Service. These release notes are updated for every maintenance release but not for patches or hot fixes.

Unified Communications Manager, the call-processing component of the Cisco Unified Communications System, extends enterprise telephony features and capabilities to IP phones, media processing devices, voice-over-IP (VoIP) gateways, mobile devices, and multimedia applications.

The IM and Presence Service collects information about user availability, such as whether users are using communications devices (for example, a phone) at a particular time. IM and Presence Service can also collect information about individual user communication capabilities, such as whether web collaboration or video conferencing is enabled. Applications such as Cisco Jabber and Unified Communications Manager use this information to improve productivity amongst employees, that is, to help employees connect with colleagues more efficiently and determine the most effective way for collaborative communication.


In the past, export licenses, government regulations, and import restrictions have limited Cisco System's ability to supply Unified Communications Manager and IM and Presence Service worldwide. Cisco has obtained an unrestricted US export classification to address this issue.

Be aware that after you install an unrestricted release, you can never upgrade to a restricted version. You are not even allowed to fresh install a restricted version on a system that contains an unrestricted version.

Before you install or upgrade either product, Cisco recommends that you review the Related Documentation for information about the documentation available.

Hardware Server Requirements

Server Support for Cisco Unified Communications Manager

The following sections describe the system requirements for this release of Cisco Unified Communications Manager and IM and Presence Service.

Make sure that you install and configure Unified Communications Manager and IM and Presence Service on a Cisco Media Convergence Server (MCS), a Cisco Unified Computing System (UCS) server, a Cisco-approved HP server configuration, or a Cisco-approved IBM server configuration. For information about which MCS and UCS servers are compatible with this release of Unified Communications Manager or IM and Presence Service, see the related compatibility matrix.

Server Support for the IM and Presence Service


The IM and Presence Service requires 4 GB of RAM, except for the 500-user and Business Edition 6000 OVA deployments, which require 2 GB of RAM.


Additional server requirements, such as port and IP address requirements, are described in the Cisco Unified Communications Manager TCP and UDP Port Usage Guide here: http:/​/​​en/​US/​docs/​voice_ip_comm/​cucm/​port/​9_0_1/​CUCM_​BK_​CCBD7A20_​00_​cucm-tcp-udp-port-usage.html.

The IM and Presence Service installer checks for the presence of the DVD-ROM drive, sufficient hard drive and memory sizes, and sufficient CPU type and speed.

IM and Presence Service supports bridge upgrades from any of the following servers:

  • MCS-7825-H2-IPC1
  • MCS-7825-H2-IPC2
  • MCS-7835-H1-IPC1
  • MCS-7835-I1-IPC1
  • MCS-7845-H1-IPC1
  • MCS-7845-H2-IPC1 (only if each of the two disks has less than 72 GB of storage space; otherwise it is fully supported)
  • MCS-7845-I1-IPC1

The bridge upgrade allows you to create a DRS backup on the discontinued hardware. You can then restore the DRS backup on supported hardware after you complete a fresh IM and Presence Service installation on the supported hardware. If you attempt an upgrade on discontinued hardware, a warning appears on the interface and on the CLI, informing you that Unified Communications Manager or IM and Presence Service supports only the functionality to create a DRS backup on this server.


If your pre-9.0 Unified Communications Manager or IM and Presence Service runs on a deprecated server, you can upgrade it by using the Bridge Upgrade procedure.

Uninterruptible Power Source

Cisco recommends that you connect each Unified Communications Manager or IM and Presence Service server to an uninterruptible power supply (UPS) to provide backup power and protect your system against a power failure.


When the MCS-781x and MCS-782x servers are not connected to a UPS, they run a higher risk of file corruption during power outages because any cached data is lost during a power outage on these servers with drive write cache enabled (and no internal RAID cache battery backup). To prevent such file system corruption, you must connect these servers to a UPS.

When Unified Communications Manager and IM and Presence Service run on one of the servers listed in the table below, basic integration to UPS models APC Smart-UPS 1500VA USB and APC 750VA XL USB is supported.

This integration occurs through a single point-to-point USB connection. Serial and SNMP connectivity to the UPS is not supported, and the USB connection must be point to point (in other words, no USB hubs). Single- and dual-USB UPS models are supported with the APC Smart-UPS 1500VA USB and APC 750VA XL USB. The feature activates automatically during bootup if a connected UPS is detected.

Alternatively, you can run the CLI command show ups status to show the current status of the USB-connected APC Smart-UPS device and starts the monitoring service if it is not already started. The CLI command also displays detected hardware, detected versions, current power draw, remaining battery runtime, and other relevant status information.

When the integration feature is activated, graceful shutdown begins as soon as the low-battery threshold is reached. Resumption or fluctuation of power will not interrupt or cancel the shutdown, and administrators cannot stop the shutdown after the integration feature is activated.

For unsupported Unified Communications Manager or IM and Presence Service releases, MCS models, or UPS models, you can cause an external script to monitor the UPS. When low battery is detected, you can log in to the Unified Communications Manager or IM and Presence Service server by using Secure Shell (SSH), access the CLI, and run the utils system shutdown command.

Table 1 Supported Servers for UPS Integration
HP servers IBM servers
MCS-7816-H3 MCS-7816-I3
MCS-7825-H3 MCS-7816-I4
MCS-7825-H4 MCS-7816-I5
MCS-7828-H3 MCS-7825-I3
MCS-7835-H2 MCS-7825-I4
MCS-7845-H2 MCS-7825-I5

Server software requirements

Unified Communications Manager and the IM and Presence Service run on the Cisco Linux-based operating system. This operating system is included with the purchase of either application.

Supported browsers

Use the following Internet browsers to access the Unified Communications Manager and IM and Presence Service interfaces:

  • Microsoft Windows: Microsoft Internet Explorer Version 6.0 or later or Mozilla Firefox Version 3.x, 4.x, or 10.x
  • Mac: Safari 5.x or Mozilla Firefox Version 4.x or 10.x

The following Internet browsers are officially supported to access the Enterprise License Manager interface:

  • Firefox: Version 8, 9, 10
  • Internet Explorer: Version 8, 9
  • Google Chrome: Version 15, 16, 17
  • Safari: Version 5.1