TERRATEL is a company providing services of designing embedded electronic and computing systems and telecommunication equipment: a full range of customized electronic design services of any complexity.
IXC Softwitch is a high performance scalable Class 4 VoIP Softswitch solution with user friendly GUI web interface, which enables secure large VoIP traffic flow over various IP networks.
Houyuan Technology (HK) Limited ( http://www.houyuanhk.com ) is a professional voip manufacturer in China.
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