PRESCOM developed automatic switching and routing units
for satellite Networks.

To these units are linked Telephones, fax, local telephone
Networks (PSTN), specialized Networks (Rita, Switch Radio, ...),
Inmarsat, and computers using X.25 or IP protocols.

Each transportable unit allows local communication and multiplexing
of communications towards a central switching system, via a satellite link.

Communication is possible between transportable units and towards
the telephone and data Networks (satellite double-hop).