StarTrinity Softswitch

The software is a free Windows-based class 5 softswitch with billing and web interface. It can be used for VoIP wholesale, origination, termination, also as a platform for building various VoIP applications: PBX systems, IVR servers, conference servers, SBCs, call centers, auto-dialers. Call procesing in the softswitch is based on CallXML scripts. The softswitch is a continuously-self-tested system with high stability and performance. SIP and RTP modules are used by more than 350 customers all over the world.

Key features

Freeware for unlimited channelsFAS detection and suppressionGeneration of FAS: before connection, after disconnection, loopback audioLong PDD detectionDetection of dial tone signal in RTP packets, post-dial delay (PDD) measurement. Detection of ringback tone inside RTP packets, reporting of RBT delayDead air, one-way audio detectionRTP jitter, packet loss, low MOS detectionWeb API for integration with your third-party softwareTest call generator (TCG) robot calls blocking (against SIM block issues)Detection of ringback tone, call answer and call termination events from RTP audio stream (for SIP-bluetooth-GSM termination with asterisk module chan_mobile)Human/machine detection to reject machine calls or avoid SIMs from blocking in GSM gateways (SIMBOXes)Whitelisting, blacklisting with custom complex logicGoogle Speech API v2 for automatic speech recognition (ASR) IVRsContinuous VoIP call quality measurement of both caller and called party. Embedded testing of softswitch, IP network, trunks and SIP phonesProtocols: SIP over UDP and TCP, RTP, RTCP, HTTPCallXML scripting engine: easy-to-understand, compact scripts, from simple to complexWeb interface for configurationSupported audio codecs: G.711, G.723, G.729.Email alerts and reports on SIP trunk call capacity overloads and low audio quality detections