Double Streaming :Audio links always more reliable, always safer!
The AETA "Double Streaming" system is an efficient way of strongly increasing the robustness of an AoIP link, thanks to a redundant link that can compensate for losses on the main link.
Audio transmission over IP (AoIP) is indeed sometimes subject to data losses for various reasons (network congestion, signal loss or temporary interruptions).
Double Streaming relies on setting up two SIP links, simultaneous but via two separate routes.
In addition to the "main" SIP link, a "secondary" SIP link is set up between the units. This link transports a copy of the audio stream of the main link. On each codec, a specific transmission interface can be selected for each of the two AoIP connections. In this way two independent routes are created, whose possible losses are not correlated. The codec which receives the two (normally) identical streams recombines them, discarding the duplicates.
The system works on a normal SIP architecture, and is compatible with any SIP server.
Like for a normal SIP link, it is also possible to make links without a SIP server
For more reliability, it is possible to use packet duplication, as for a standard link. At the same time, there is a "temporal" redundancy internal to each link (packet duplication), and "spatial" redundancy between the two links (double streaming).
Double Streaming is now available by simple software update* for the following AETA Audio Systems codecs:
ScoopTeam (V1.05)
Scoopy+ S (V.1.11)
Scoop5 S and Scoop5 S-IP (V.1.11)
μScoop (V1.07)
*: To use the Double Streaming feature with the SIP protocol, the device must have 2 SIP accounts. AETA codecs will now be provided with 2 free factory SIP accounts For devices already in use, use a Premium SIP account or contact your usual AETA Audio Systems distributor.
AETA Audio Systems is a leading international developer of portable sound recording units, mixers and advanced audio codecs, optimised for any kind of media and transmission infrastructure.
