VoIP Trunk Gateway SMG-4

SMG-4 is a trunking gateway for converting signal and media flows of TDM and VoIP networks. VoIP-VoIP calls are not supported.

Optimal solution for digital PBX

SMG-4 provides a smooth transition from TDM infrastructure to modern VoIP networks, while ensuring full compatibility with existing equipment. The device provide an excellent opportunity to connect digital PBXs to NGN networks.
 

Functional compatibility

Strict compliance with modern protocols, recommendations and standards ensures 100% functional compatibility of SMG with digital PBX, IP PBX, Softswitch, etc.
 

RADIUS routing

Intellectual call routing based on billing system responses according to the RADIUS protocol allows creating flexible methods of call processing.
 

Unauthorized access protection

SMG gateways have intelligent protection against external connections of SIP subscribers (fail2ban, iptables, white/ black lists).
 

Media flows transcoding

The hardware transcoding helps to coordinate media flows with different VoIP codecs.
 

High quality voice processing

The high quality of voice processing is provided by the up-to date hardware platform, support for main audio codecs used in VoIP networks (G.711, G.723.1, G.726, G.729, Clearmode), echo cancellation, silence detector, comfort noise generator, DTMF signal receiving and generating, as well as traffic prioritization (QoS) mechanisms.
 

Interfaces

SMG-4 has 4 ports of RJ-48 for E1 stream connection and 1 LAN port of 10/100/1000BASE-T (RJ-45) for IP network connection.