Specifications


The following table presents the main system specifications
Characteristic Value Unit of measurement
Minimum network speed required for one video channel 128 kbps
Minimum network speed required for one audio channel 10 kbps
Maximum number of users connected to one server 1000+ (*) Pc
Maximum number of simultaneous video calls 100+ (**) Pc
Maximum number of participants in one conference 30+ (***) Pc
Maximum number of simultaneous conferences on one server 3+ (****) Pc
Minimum video channel resolution 160x120 (SubQVGA) Width x Height of points
Maximum video channel resolution 4096x3112 (UltraHD/4K) Width x Height of points
Audio channel sampling rate 16 кГц
Audio channel operating frequency range 0-8000 Гц
Default video codec VP8
Default audio codec Opus
Channel of audio / video streaming SRTP (RFC 3550)
Control channel WebSocket over HTTP(s)
* - determined by the performance of the server hardware and network bandwidth.
** - determined by network bandwidth.
*** - is determined by the performance of the server hardware, network bandwidth and the power of client PCs.
**** - determined by the performance of the server hardware and network bandwidth.

Network and hardware requirements


The system works according to the following principle - AV streams from each participant are sent separately to each client device via the server, which acts as a traffic multiplier. Thus, each participant transmits to the server one AV stream (its own) and receives N AV streams, where N is the number of participants in the conference.

The minimum requirements for the outgoing communication channel of each participant is 160 kbps. To ensure SD quality, an outgoing channel of 384 kbps is required, for HD 864 - kbps, for FullHD - 1152 kbps. Channel inbound bandwidth must be at least N * (outbound bandwidth), where N is the number of participants in a video conference.

Server network requirements - incoming channel: N * (outgoing bandwidth of the participant), outgoing channel: N * N * (outgoing bandwidth of the participant), where N is the number of participants in a video conference.

The system works reliably with losses in communication channels up to 5%, retains speech connectivity with losses up to 10%.

                The table below presents the approximate hardware and network requirements depending on the number of users and quality.
Number of participants Quality Server network bandwidth Client network bandwidth Server hardware requirements Client hardware requirements
2 SD In: 760 kbps
Out: 760 kbps
In: 380 kbps
Out: 380 kbps
CPU is not worse Intel Atom E6xx, 512 Mb RAM CPU is not worse Intel Atom E6xx, 512 Mb RAM
2 HQ In: 1024 kbps
Out: 1024 kbps
In: 512 kbps
Out: 512 kbps
CPU is not worse Intel Atom E6xx, 1024 Mb RAM CPU is not worse Intel Atom E6xx, 1024 Mb RAM
2 HD In: 2048 kbps
Out: 2048 kbps
In: 1024 kbps
Out: 1024 kbps
CPU is not worse Intel Atom E6xx, 1024 Mb RAM CPU is not worse Intel Celeron 2GHz, 1024 Mb RAM
8 SD In: 3 mbps
Out: 24 mbps
In: 3 mbps
Out: 380 kbps
CPU is not worse Intel Celeron 2GHz, 1024 Mb RAM CPU is not worse Intel Celeron 2GHz, 2048 Mb RAM
8 HQ In: 4 mbps
Out: 32 mbps
In: 4 mbps
Out: 512 kbps
CPU is not worse Intel Celeron 2GHz, 1024 Mb RAM CPU is not worse Intel Core 2 Duo, 2048 Mb RAM
8 HD In: 8 mbps
Out: 64 mbps
In: 8 mbps
Out: 1024 kbps
CPU is not worse Intel Celeron 2GHz, 2048 Mb RAM CPU is not worse Intel Core i3, 4096 Mb RAM
16 SD In: 6 mbps
Out: 48 mbps
In: 6 mbps
Out: 380 kbps
CPU is not worse Intel Celeron 2GHz, 2048 Mb RAM CPU is not worse Intel Core 2 Duo, 4096 Mb RAM
16 HQ In: 8 mbps
Out: 64 mbps
In: 8 mbps
Out: 512 kbps
CPU is not worse Intel Celeron 2GHz, 4096 Mb RAM CPU is not worse Intel Core i3, 4096 Mb RAM
16 HD In: 16 mbps
Out: 128 mbps
In: 16 mbps
Out: 1024 kbps
CPU is not worse Intel Core 2 Duo, 4096 Mb RAM CPU is not worse Intel Core i5, 8192 Mb RAM
32 SD In: 12 mbps
Out: 96 mbps
In: 12 mbps
Out: 380 kbps
CPU is not worse Intel Core 2 Duo, 4096 Mb RAM CPU is not worse Intel Core i3, 8192 Mb RAM
32 HQ In: 16 mbps
Out: 128 mbps
In: 16 mbps
Out: 512 kbps
CPU is not worse Intel Core i3, 4096 Mb RAM CPU is not worse Intel Core i5, 8192 Mb RAM
32 HD In: 32 mbps
Out: 256 mbps
In: 32 mbps
Out: 1024 kbps
CPU is not worse Intel Core i5, 8192 Mb RAM CPU is not worse Intel Core i7, 8192 Mb RAM


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