Zetron Moves Moscow Metro Forward Acom Supports Light-Rail Communications Expansion

Case Study

Location: Moscow, Russia Product: Acom

The Moscow Metro system has been moving passengers throughout Russia’s capital city since 1935. In recent years, the Moscow Metro network was extended outside of the city boundaries to the new urban development of Orekhovo-Borisovo- Severnoe in the south of Moscow. This light-rail line, known as the L19, runs from Ulitsa Starokachalovskaya to Bunninskaya Alleya. It is an extension of the longest line in the Metro network. Unlike the older parts of the Metro, this extension is entirely above ground. Moscow Metro often uses this extension to develop and test new technologies, such as those for lighting, seating, and communications. Once the technology has been refined and proven through this testing process, it is incorporated across the entire Moscow Metro system. The challenge When the time came for Moscow Metro to update the Supporting the system’s six sites communications system for the L19 Metro line, it chose RCI The communication system comprises six sites. Site One is located and Usttelecom as its partners in the effort. The updated in the Metro’s main control room, near the centre of Moscow. communications system would have to support the integration The equipment includes PABX connections and a voice-logger of radio, telephone hot lines, tunnel lines, alarms, and the public interface and is connected to the legacy intercom system. Site One address system. It would also have to connect to the existing connects to Site Two (located at Ulitsa Starokachalovskaya some intercom system and be flexible enough to accommodate Moscow 30 kilometers to the south) through E1 links. Metro’s defined method of operations. Site Two controls all of the stations’ communications, including The solution radio base stations (for communications to and from the trains, Zetron’s Acom Advanced Communication System was chosen as well as communications for maintenance, security and station for this project because of its ability to meet Moscow Metro’s staff), the public address system, and telephone hot lines. It requirements. also houses the train-dispatcher/controller console and a local Acom is built on a modular technology platform that ensures management PC that includes the potential for an additional exceptional performance, high-speed response, multimedia operator position. facility, and cost-effective evolution. In addition, Acom’s fully Six more consoles run from this site, but they are physically digital, distributed architecture supports the networking of located in the main control room at Site One and are connected communication centers with common control equipment in through the E1 links. These support the control and management different geographical locations. It does so by using E1 links, fiber of the line from the central office. optics, telephone connections, or data services such as ISDN. This The other four sites are located at each of the stations along the provides the distributed switching and wide-area control that are line and are connected to Site Two through a fiber-optic loop. The particularly useful for citywide rail networks. facilities at Sites Three and Six are identical to those at Site Two for controlling each of the stations’ communications. Sites Four

www.zetron.com and Five, however, have no base stations because Sites Three and Six provide their coverage. The results The greatest advantage of the Acom system is that it combines all of the system’s different types of communication functionality and equipment–PA, telephone, hot lines and radio–into one simple console. Even the legacy network is integrated into the Acom system. This ensures that the Acom system works with the existing network, not just alongside it. The Acom system has worked so well for Moscow Metro that it is now being used in other parts of the network. In addition, Acom will continue to be used in the ongoing effort to expand the system over time.n

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