Having more then decade experience in developing VOIP products.
Expertise in following area -
1) Freeswitch development in C / Linux
2) Asterisk development in C / Linux
3) Installation , configuration of PBX (for e.g FreePBX, Vicidial )
4) Troubleshooting of various VOIP issues like calls , DTMF , audio , fax, system hang, heavy traffic system not working, etc.
5) Comfortable with Freeswitch , Asterisk backend configuration, browsing logs, debugging issues either by logs or by digging into C code.
6) Love to follow proper process whether its development or deployment.
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