This is a Voice over Internet Protocol (VoIP) and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services and unified communications to customers equipped with SIP-based private branch exchange (IP-PBX) and Unified Communications facilities
Opto Network Private Limited is an Internet Telephony Service Provider in India. Head office is in Noida, India, Band having branches in Bangalore and Mumbai.