atecom™ provides one of the most advanced MPEG-TS protection switching available in the market. It prevents from service outages caused by equipment failure or errors being introduced by disturbed transmission lines. Packet aligned protection switching guarantees at all time the integrity of the output stream. Each switch provides a passive loop-through to assure the presence of an output signal even in case of a power or card failure. In case of two copies of the same stream as input signals, the switches first synchronize the two inputs to enable seamless switching. The switches can eliminate a differential delay of up to 87.380 TS packets (~6s@20Mbps). Furthermore, if corrupted TS-packets are identified, the switch can replace such packets by the corresponding packet from the other input, leading to an improved quality of the output stream compared to the individual input streams. For this kind of operation no external time references, like GPS are required. Our Advanced ASI Protection Switching functionality comes either as a standalone unit, named Raven, or as a plug-in card for our Falcon system.