Since acquiring Aviwest earlier this year, a commonly asked question is what the differences and similarities between the Secure Reliable Transport (SRT) protocol and the Safe Streams Transport (SST) protocol are. . Before we take a deeper dive, let’s start by explaining the fundamentals of what SRT and SST are. SST and SRT are both real-time transport protocols designed to transport high-quality and low latency video over unmanaged networks. The fundamental difference between the two is that SRT was initially designed for wired IP networks including the internet whereas SST was developed for streaming over mobile and wireless networks.