Similar Concepts
The Audio Engineering Society's MADI or AES10, although similar in function, uses 75-ohm coaxial cable with BNC connectors instead. It is most similar in design to AES3, which can carry only two channels (stereo).
The Audio Engineering Society's AES47, provides linear audio networking by passing AES3 audio transport over an ATM network using structured network cabling (both copper and fibre). This is used extensively by contractors supplying the BBC's wide area real-time audio connectivity around the UK.
In broadcasting and to some extent in studio and even live production, many manufacturers equip their own audio engines to be tied together with Ethernet. This may also be done with gigabit Ethernet and optical fibre rather than wire. This allows each studio to have its own engine, or for auxiliary studios to share an engine. By connecting them together, different sources can be shared among them. Logitek Audio is one such company using this approach.
An audio over IP setup differs in that it works at a higher layer, encapsulated within Internet Protocol. These systems are usable on the Internet, but may not be as instantaneous, and are only as reliable as the network route — such as the path from a remote broadcast back to the main studio, or the studio/transmitter link (STL), the most critical part of the airchain. This is similar to VoIP, however AoIP is comparable to AoE for a small number of channels, which are usually also data-compressed. Reliability for permanent STL uses comes from the use of a virtual circuit, usually on a leased line such as T1/E1, or at minimum ISDN or DSL.
Read more about this topic: Audio Over Ethernet
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