VoIP Trunk Gateway SMG-4 platform can be used as a trunk gateway for conjugating signal flows and media flows of TDM and VoIP networks.
Optimal Solution for Digital PBX
SMG-4 gateways make possible smooth transition from TDM- infrustructure to advanced VoIP – networks providing full compatibility with existing Devices provides an excellent opportunity of digital PBX connection with NGN
Functional compatibility
Strict conformity to the requirements of up-to-date protocols, recommendations and standards ensure 100% functional compatibility of SMG-4 with different equipment: digital АТS, IP-PBX, Softswitches, VoIP gateways, SIP telephones, program SIP clients, etc.
RADIUS-routing
Intellectual call routing based on billing system responses according to RADIUS protocol enables to create flexible methods of call processing.
Intellectual protection of IP networks
The intellectual protection against unauthorized external connections of SIP users (fail2ban, iptables, white/blacklists, etc.) has been implemented in trunk gateway SMG-4.
Media Flows Transcoding
The hardware transcoding based on MediaCodecs Mindspeed Technologies helps coordinate media flows with different VoIP codecs.
High Quality of Voice proccessing
Modern hardware platform, support of all basic audio codecs used in VoIP- networks (G.711, G.723.1, G.726, G.729), echo elimination functions, silence detector, comfort noise generator, DTMF signal reception and generation, and traffic prioritization mechanism (QoS) provide high quality of voice processing.
Interfaces
SMG-4 converter has 4 RJ-48 ports on board for E1 flows connection , 1 LAN 10/100/1000 Base-T (RJ-45) port to connect IP-network.
