The Cisco® Universal Media Services (UMS) is a critical component of the Cisco IP Interoperability and Collaboration System (Cisco IPICS). The UMS enforces talkgroup memberships defined and controlled by Cisco IPICS Server. The UMS mixes audio from multicast and Session Initiation Protocol (SIP) streams and broadcasts it back to other multicast and SIP streams. The UMS offers an extensible, upgradable platform for media services.
The UMS bridges multicast and unicast users, performs proxy mixing for resource-constrained endpoints, and provides G.711 and G.729 transcoding services so that local Cisco IPICS Dispatch Centers (Cisco IDC's), remote IDCs, and IP phones can participate in the same virtual talkgroup. The UMS platform supports the creation of virtual talkgroups composed of diverse endpoints.
Figure 2. Cisco Unified Computing System™ for Virtualized UMS
Features and Benefits
A UMS performs functions similar to those performed by the router media service (RMS) and is controlled by the Cisco IPICS server. The new feature in the UMS is the P25 Talker ID re-streaming support. There are several new features in the UMS, shown in Table 1.
Table 1. Cisco UMS Features and Descriptions
Mixes audio from multicast and SIP streams and broadcasts the mixed audio to other multicast and SIP streams.
Supports Talker ID between multicast and SIP endpoints including P25 and other signaling supported through serially controlled donor radios.
Dispatch from IP SIP endpoints
Provides radio control from SIP endpoints, removing the need for expensive proprietary handsets.
Improved multicast voice quality
Contains an improved voice quality algorithm that allows for better multicast mixing.
Supports Apple iPhones, and IP phones as dispatching endpoints*
Allows remote users to join audio and video communications as part of a virtual talkgroup. This allows users from proprietary radio networks or systems to connect to Wi-Fi or public carrier networks using smartphones with the IPICS mobile client.
Virtualized proxy mixing
Mixes proxy users so that audio processing can occur on either a network appliance or virtualized environment, which enables the existing network infrastructure to be reused.
Provides G.711 and G.729 audio transcoding between local dispatchers, remote dispatchers, smartphone users, and IP phones assigned in a round-robin type fashion to ensure distributed resources.
Provides audio high availability through the use of a high availability server. If the primary server goes down, the secondary server automatically takes over.
As a Linux-based solution, the Cisco UMS can potentially run on a wide range of platforms. The UMS will run on the 2RU Cisco Physical Security Multiservices Platform server with two hard drives. The UMS comprises the following functional building blocks (see Figure 3).
The UMS extends the functionality provided by the RMS in current IPICS deployments. RMS is router-based software that provides channel mixing (bridging of multicast channels) and support for remote IDC users. The UMS offers an extensible, upgradable platform for media services. The UMS has advanced signaling which informs users of who's talking (talker ID) or, in native P25 mode, the dispatcher's talker ID will be sent to all subscribers.
In the RMS, configuration can be done manually in Cisco IOS Software (e.g., dial peers, multicast-unicast-multicast [MUM] trunks, etc.) or can be run in Cisco Unified Communications Manager Express. In the UMS, although manual configuration can be done from the command line interface (CLI), the change state is not maintained when the IPICS Server alters any configuration.
Table 2 compares the RMS and the UMS.
Table 2. Cisco RMS and UMS Comparison
Talker ID Multicast talkgroup
Talker ID SIP
Talker ID Virtual talkgroup
Talker ID P25
Yes (P25 or IPICS User ID)
Yes; Layer 3
Table 3 provides ordering information.
Table 3. Ordering Information
UMS Appliance: Order as option to 2-RU Cisco Physical Security Multiservices Platform or as an option to the Virtualized IPICS Software (CIS-IPICS-VM).
UMS HA Appliance: Order one for each UMS that requires high availability.
Virtualized IPICS Software: Order this for a virtualized version of the UMS, and structure all previous software as options to this part number.
Cisco UMS is an integral part of the Cisco IPICS System and is the key enabler for enforcing Project 25 audio communications. Cisco IPICS provides secure, reliable, and scalable communications to organizations using the IP network as the core infrastructure.
Please contact your local or regional Cisco account representative for Cisco IPICS ordering information.
Services and Support
Cisco and our certified partners can help you accelerate success and improve the return on your investment in a Cisco IPICS solution. The Cisco lifecycle approach to services defines the requisite activities at each phase of the solution lifecycle:
• Reduce deployment costs by identifying the features that will best meet your business requirements
• Accelerate migration by assessing the readiness of your network to support the system and by developing a sound design
• Support smooth implementation through effective planning and expert installation, configuration, and integration
• Increase operational efficiency and extend the value of your investment with award-winning technical support