The common name shared by communication protocols, technologies and
methods ensuring the transfer of the voice signal via the Internet network or
by any other IP-networks. The signal is transferred by the communication
channel in the digital form and, as a rule, before transferring compresses in
order to remove abundance.
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.