October 14 teleconference with "Progress" Russian Antarctic station passed within the Moscow stage of XIII All-Russian science festival of NAUKA 0+. Для организации трансляции использовалась система видеоконференцсвязи российского производителя Vinteo.
Teleconference connected some platforms of festivals in different parts of the country: Shuvalov building of Lomonosov Moscow State University and Zaryadye park in Moscow, Vladivostok State University of economics and service and Progress Russian Antarctic station. For the broadcast organization was used a Vinteo software server of video conferencing located in MSU (Vinteo video core installed to the Dell T630 server with one processor and two NVIDIA Quadro professional video cards).
The feature of teleconference was the use of satellite communication channel which suggests long delay of image and sound (until 2 seconds of round trip time - RTT). For connection specialists of MSU used 512 kbps channel and WebRTC account was created to the server for speed limit to the "Progress" station with chosen indicator of 256 kbps due to existing information redundancy on connection channel (system encoding of overhead). Vinteo solution showed its effeciency and flexibility during use on non-standard connection channel that is competent work with audio and video (technoly of prioritization of audio traffic than video) and Forward Error Correction (FEC) protocol allowed to get a good sound and image on the conference.
«Satellite channels are usually enough 'clear'; the main problem is in delay of transmission. But in our case during the start of testing huge losses were discovered, until 90% packages. Nevertheless though image froze during such values of losses, the voice was legible as to the one side as to other. Satellite provider was informed about the bad state of the channel and at the moment of the video connection session the problem was solved. I notice that Vinteo solution adjusted to work on satellite channel of connection easy providing the possibility of choice of resolution and speed for participant and quality of service stayed to a high level», Michail Barishev, Vinteo company chief engineer, said.
Thanks to organized teleconference visitors of the festival got the unique possibility of live communication with employees of the polar station fully isolated from connection with other continents for many months of polar winter. Scientists from "Progress" station told about features of their scientific activity, routine life and answered many questions of participants of teleconference.
This year XIII All-Russia festival of science of NAUKA 0+ conducts in 72 regions of Russian Federation. In Moscow events conducted from 12 till 14 October on 8 central platforms (Shuvalov building of MSU, fundamental library of MSU, central exhibition complex of Expocentr, Russian science academy, Digital business space, Nikitsky boulevard, Zaryadye park and Cosmos pavillion on VDNKh) and in more than 90 universities, museums, and scientific centers of the city. Central regional platforms became Belgorod (21-22 September), Murmansk (9-10 November) and Krasnoyarsk (7-8 December). According to the press service of Lomonosov MSU NAUKA 0+ Moscow festival were visited by 870 thousands humans 70% of them were students and pupils.
More about festival www.festivalnauki.ru