Tokyo Telephone Calling Cards Whol and Mfrs 2-10-8 Kanda Tsukasamachi OTEL International Calling Cards is one of the various products owned by Ocean Technology (OTECH), a Japan based VoIP and carriers service provider. The head office located in the capital city of Japan has also established its branch in Lalitpur (Nepal) to scatter its services and products for large number of end-users. Tokyo Out Telephone Calling Cards Whol and Mfrs Otel International www.otelint.com calls prepaid phone cards calling cards calls prepaid phone cards calling cards Business Reviews Otel International Testimonials