DOTEL/R/2017/50069

DOTEL/R/2017/50069
Request :

Sir/Madam,

I need clarification in terms of using VoIP for business (both in SMB & Enterprise segments) in India. As per the information available in internet there are lot of ambiguities in understanding the legal requirements. Hence request your help in getting full details in terms of usage policies as per the latest Indian telecom policy.
1.Can I use Open Source Telephony system Asterisk as PBX for business use
2.Can I connect branch office PBX systems through Internet using VoIP protocols
3.Is OSP license mandatory to inter connect branch offices over internet using VoIP protocols
4.Can I have SIP trunks to connect branch offices & PSTN for local calling on the same server
5.Can I connect international work location PBX system to India office PBX system over internet using SIP trunk
6.Is it legal to use services like Skype, Google Hangout (both free & business models) for business purpose
7.I came to know that FreeConferenceCall.com is offering bridge services with both India & US numbers. Is it legally allowed to use these services