The technology used heretofore had always caused communications breakdowns. Every user organization had its own communications system, which were not set up countrywide, but regionally subdivided. They delayed particularly the coordination of rescue forces in emergency and disaster situations. The mobile radio network we developed offers the current more than 10 user groups a common communication platform - and, at the same time, every authority the possibility to communicate independently.

To achieve the goal of a homogenous wireless system, we used a flexible ACCESSNET-T network architecture to combine Virtual Private Networks (VPN) with our proven cluster technology. This allows it to cluster individual subnetworks, i.e. to bundle them. As a result, the number of required connection lines in the transport network could be significantly reduced in Malaysia and the costs lowered.

In close cooperation with the integrator NSN and the Sapura group as local partner, we implemented the project in several expansion stages. In the last phase, Sapura installed 70 ACCESSNET-T switching nodes, the network features over more than 500 base stations each with up to eight TETRA carriers.

A decentralized architecture is meaningful particularly for such large networks to save connections in the transport network and rule out communication problems. For this reason, we are networking the regional base stations and switching nodes, such as those under the authority of the administrative district, in this project using cluster technology. They are connected with each other using highly available communication channels: The voice and data traffic is automatically redirected as soon as interferences occur on a connection path. For this purpose, the integrated network management system (NMS) permanently monitors all the components of the wireless system and analyses the current performance of the network using KPIs (Key Performance Indicators). This allows our solution to ensure that every piece of information always reaches its destination.

The network presently features twelve highly available switching centres with fully redundant components. Today, 10,000 mobile stations are registered in the network which can accommodate a total of 70,000 subscribers and can be expanded upon demand without any problems.