MRTC, the master router/real time clock, is a compact device for transmission of signals over non-deterministic IP circuits, like the public internet. What makes it uniquely powerful is that it includes a receiver for a freely-available time source, like a cellular signal or GNSS. This gives each node in a complex remote production its own PTP grand master, ensuring synchronization to millisecond accuracy across the whole production chain, more than sufficient for broadcast purposes.

The latest version of MRTC, to be unveiled at NAB, incorporates additional functionality to manage and control NDI sources, ensuring they are presented to the master control in the correct frame rate and broadcast stability. This means, for example, a remote contributor to a production simply needs an NDI camera and a SipRadius MRTC to connect to the internet. MRTC provides stable and accurate timing to the camera and to the signal delivered to master control.