technology
Our systems are based on a combination of open and closed source software, in addition to our own custom software.
We integrate applications and networks with the following core components:
| Logitel | redundant voice switches with centrex features |
| Sangoma | E1/T1 interface cards, SS7 gateways |
| OpenSIPS | high performance SIP proxy |
| Digium | provider of Asterisk and echo/transcoding DSP cards |
Our system for Diskavontade, a CLEC, illustrates how we built
comprehensive infrastructure to handle VoIP traffic for a large customer base spread between Brazil and the U.S.
See the overview here.
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Recent development projects:
- real-time software based T1 switch with custom Q.931 layer to implement precedence & preemption (MLPP) for a DoD customer
- custom DSP software and descision-tree heuristics to reliably detect DTMF over a noisy GSM channel for a customer's calling-card application
- specialized signaling application in Java using the JAIN SIP stack
