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Networking dependability in the lifeline of more than 7.85 million commuters every day A case where Commtel's mission-critical application networked 22 suburban stations to support one of Asia's busiest railway networks.

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The mission was complex. Reliability was critical. The aim was to deliver seamlessness.

CONTROL CENTER

The Task Commtel was entrusted with the responsibility of setting up a failsafe communication backbone to provide connectivity across 22 suburban stations as part of the Train Management System (TMS). The networking had to support the integrated management, monitoring of train movements and signaling as well as planning of routes, diversions and disruption of services.

The Challenge Transporting more than 7.85 million commuters daily demanded an ultra-reliable train management built on a system where innumerable complex array of data is carried on a 24x7 basis across the rail network. The challenge was to establish and monitor a robust communication network across 22 stations, (some of which did not have the requisite infrastructure) in a seamless, fail-safe manner with the help of world-class equipment that comes with high durability and longevity.


The Solution Commtel provided a communication infrastructure based on Nokia Siemens Networks Dynanet Primary add/drop multiplexers and a network management system. The equipment was interfaced with the TMS network elements. Some stations that were not equipped with the requisite infrastructure to support the fiber network were connected through copper wire on line drivers to the adjacent stations, facilitating un-interrupted communication. A robust communication system was set up by providing a protected path on fibre as well as microwave network.

RAILROAD CROSSING SIGNALING

REDUNDANT FIBRE OPTICS/MICROWAVE BACKBONE

SDH DB2B TICKET VENDING MACHINE

CCTV VIDEO SURVEILLANCE

TRAIN MANAGEMENT SYSTEM SURVEILLANCE CAMERA

POWER SUPPLY

The Highlights ST 8

ST 16

ST 1

ST 23

The system provided by Commtel was deemed as the most commercially viable and technically sound solution designed to provide high availability required for such applications. The solution offered, not only met all the technical requirements, it also gave a new life to the rail network communications which is still up and running and would remain so for years to come.

The Benefits

MAIN PATH CHANNELS

BACK-UP PATH CHANNELS

OPTICAL FIBRELINK

MICROWAVE LINK

The field proven reliability of Nokia Siemens Networks solution offered the mission-critical support required for smooth operation of the Train Management System. The end-to-end solution also reduced project management costs and risks. High availability of the communications system reduced the project's maintenance and spares stock cost for the future. Most of all Nokia Siemens Networks’ reputation and proven technology bolstered the whole network communication process by protecting important data and ensuring optimum redundancy. This rail network project was entrusted by one of Commtel's very satisfied customers who had impeccable faith in Commtel's ability to handle a system as critical as this one with utmost reliability. To Commtel's long association with the world renowned brand Nokia Siemens Networks, this was a further reinforcement. The successful completion of the project and its crisis-free operation stands testimony to the trust reposed by customers and associates and reaffirms Commtel's expertise in mission-critical applications.


Networking dependability in the lifeline of more than 7 million commuters every day  

Case Study

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