StarTrinity SoftSwitch 3.1 was available as a free download on our software library. Our antivirus analysis shows that this download is malware free. The most popular version among the software users is 3.1. The program lies within System Utilities, more precisely Device Assistants. This free program is a product of StarTrinity.com.
From the developer:
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, etc. Call procesing in the softswitch is based on CallXML scripts. The softswitch is a continuously-self-tested system with high stability and performance.
You may want to check out more software, such as Billion Softswitch, Billion Phone or Mizu VoIP Server, which might be similar to StarTrinity SoftSwitch.