Hytera Mobilfunk has won a contract to expand the existing TETRA radio system in Macedonia.The network is used by the Macedonian security authorities for public safety.
Together with its partner Nokia Siemens Networks (NSN), Hytera Mobilfunk began work on delivering the TETRA radio system of the security authorities in Macedonia back in 2008 when it still operated under the name of Rohde & Schwarz Professional Mobile Radio.
The first network installation comprised 42 base stations, redundant exchange nodes and network management features, as well as control centre technology made by NSN.
In 2012, Hytera Mobilfunk was awarded the contract to expand the network by adding further base stations within the context of a tendering process to augment the service area with ACCESSNET-T IP.
The network expansion comprises 26 TETRA base stations of the type DIB-500 R4.1, a completely IP-based TETRA exchange IP Node, as well as workstation computers to administer the radio system.
In addition, the existing control centres were modernised and provided with new features such as GIS (geographic information systems) and AVL (automatic vehicle location).
The special feature of the upgraded network is that with ACCESSNET-T IP the new network constituents are completely networked with each other via a completely IP-based network. E1-links can still be used in the existing network, however.
The link between the new network segment and the existing network is implemented by a CS/IP bridge that permits Hytera's customers to expand their existing networks with the state-of-the-art ACCESSNET-T IP at any time.
The project handling division of Hytera Mobilfunk was able to implement the installation of the network as well as the integration of the new network elements at the end of 2012, thus beating the customer's schedule by two months.
Apart from delivering the TETRA infrastructure, Hytera Mobilfunk was also responsible for rendering the entire location fit for the expansion including masts and service rooms.
Since the acceptance test, the TETRA system has been operating in test mode and was due to go live at the beginning of February 2013.