Telecom Lead Asia: Rohde & Schwarz Topex has supplied ATC communications system including IP-based R&S VCS-4G voice communications system to Al Massira International Airport in Agadir, Morocco.
Al Massira International Airport uses the IP-based system based gateways to interconnect to existing radio stations and to PSTN, PBX or telephones, protecting the investment made in the past.
VoIP in line with EUROCAE ED-137 is the upcoming communications technology for ATC. The fully IP-based R&S VCS-4G voice communications system adheres to this standard.
Rohde & Schwarz says the VCS is built on a redundant architecture and contains 14 controller working positions distributed over several locations at the airport, including the tower, approach and technical room.
The company could eliminate several challenges. For instance, the main challenge for the new system was to integrate and share the radio resources with the two existing VCSs used by ONDA in the control tower.
Special line switching devices, according to Rohde & Schwarz, enabled these radio resources to be be used from any of the three VCSs at Al Massira Airport.
Besides the complete redundancy for the VCS, Rohde & Schwarz Topex provides a bypass device as last resource to enable radio communications at any time.
The IP approach of the R&S VCS-4G made it easy to implement VPN-based communications with Casablanca and Inezgane airports. Dedicated media gateways were installed at the three locations in order to ensure secure voice over IP (VoIP) communications.
