The mushrooming of unregistered Voice over Internet Protocol (VoIP) or Internet Telephony has become a security problem as the origin of caller and time of call cannot be ascertained prompting central agencies to ask service providers to come up with a solution within a month.
A series of meetings between security agencies, Department of Telecom, National Technical Research Organisation and service providers have failed to come up with any solution to block the unregistered VoIP, who operate from outside the boundaries of the country, sources privy to the developments said.
