3G CallNet is a VOIP service provider and one of the top leading distributors of Sangoma, Digium, Grandstream, Plantronics, Dascom products (PRI Cards, VoIP Phones, GSM Gateway, PRI Gateway, FXO / FXS Gateway and VoIP Headset) all over the world. . 3G CallNet | Call center dialer provider in India | Also provide call center dialer, IP PBX, IVR, TTS. Lesson 2 Speech |, Call Blasting, Click to call and many more VoIP services according to your specification and requirements. It is a solution-oriented organization, with a single view of service within the parameters that can prevent in each case.