Russian unified communications system based on the principles of peer-to-peer architecture. P2P unified communications network node (peer). Allows to provide ease of scaling of the network, the highest degree of its fault tolerance, territorial distribution of devices, mobility of users, as well as efficiency of investments. 50 IP trunks, up to 800 SIP subscribers, 400 concurrent calls. Network: Ethernet 10Base-T/100Base-TX Static IP, DHCP QoS. Protocols: SIP (RFC3261), IAX2. Transport type: UDP, TCP, TLS. Codecs: G.711, G.729, GSM, G.722, iLBC, Speex, Opus. Fax: T.30, T.38. Dimensions, mm: 440х250х44 (1U). Weight, g: 3100. Power supply: AC 115-230 V, 50 Hz.