The air traffic over the Maldives archipelago is already managed through a SITTI system that was installed some years ago. The connectivity from VCS to the radio sites have been recently converted from analogue to MPLS, hence there is a need to connect the radio devices to the existing MULTIFONO® system via a WAN.
The interface to the new radio sites is going to be granted by means of SITTI GVS gateways (Gateway Voice System), that provide the capability of converting analogue signals to standard VoIP messages and protocols, thus allowing any kind of radio equipment to be interfaced over a LAN or WAN. Similar gateways are also available for telephone links.
GVS devices have been conceived to provide the Customers with a powerful and a cost-effective solution to handle legacy analogue connections and convert them to the latest VoIP technology, in accordance with EUROCAE VoIP Recommendations (ED136, ED137, ED138). These products are characterized by very high flexibility, expansibility, modularity, reliability, in line with the overall architectural principles that drive all SITTI VCSs (Voice Communication System).
Remote radios are connected over the WAN via unicast IP links (RTP) that are automatically transformed into an internal multicast IP session, to allow many different controllers to access the same radio while saving bandwidth on the connecting WAN. Thanks to two independent Ethernet connections to the internal LAN and other two connections to the external WAN, GVSs ensure redundancy and non-blocking 24-7-365 functioning.
Once again, even through the provision of VoIP radio gateways to Maldives, SITTI proved its being a complete solution provider, helping the customer to properly deal with all voice interfaces that are made seamlessly available to the controllers, regardless of their being analogue or standard VoIP.