:: This type of link is best suited for data transmission between two locations.

  :: This type of transmission can connect two sites that can't be linked using other terrestrial infrastructure and also has excellent reliability and security, given the fact that the terminals are placed only at the customer's premises.

  :: The two terminals use two carrier frequencies, one for Tx, one for Rx. Thus the channel is always available.

  :: Advantages:
        � bandwidth: 32 kbps - 5 Mbps;
        � minimal delay;
        � guarantied bandwidth;
        � few points of failure;
        � total independence of another networks;
        � data transfer, voice, video (optional).