Around 15 per cent of international call traffic is likely to go to Internet telephony services over the next few years. Consultants are warning telcos to begin planning new tariffs for international fixed wire calls now.
Robin Duke-Woolley, consultant at telecomms consultancy Schema, said: ?A substantial portion of international PSTN call revenue - worth nearly $15 billion per annum within the EC alone - is under threat as telephony services, fax services and voicemail all move towards the Net.?
More than half of business calls are one-way communications, such as faxes, and so are a target for Net voicemail services, continued Duke-Woolley. The opportunity is now being actively pursued by systems vendors and Internet service providers, offering substantial savings for business users.
One-way communications do not suffer the quality problems associated with interactive Internet calls as transfer does not need to occur in real time, he explained.
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