We have working experience of more than 6yrs on Asterisk, Freeswitch, A2billing, Elastix, MOR billing, OpenSER/Open Sip, Vicidial, vTiger, CRM, FAX integration and other VoIP related technologies.
Below is the list and brief detail of some of our previous work. Hope you will look into our experience.
1. Opensip/Kamilio, asterisk, a2billing, Media proxy, RTP proxy, Radius server etc installation and configuration.
2. DID Setup for different provider, Digium, DID callback with asterisk/Freeswitch. DID number forwarding to mobile phone or different extensions.
3. Callback spoofing.
4. Xlite, web phone, SIP phone implementation.
5. Web/Audio conferencing with moderator/inviters pins with real time billing.
6. Registration/Phone verification/Balance alert/notification through SMS.
7. Creation of sip accounts/extension and management.
8. Scheduled conferencing, SMS, Callback.