In a statement released on Tuesday, Sumitomo and NEC announced that they would be supporting Myanmar's "emergency communications network improvement plan" by building a high speed optical cable to link the country's biggest cities.
The cables will enhance the cities' internet connectivity, as well as provide more than 1.5 million fixed-telephone lines when they are completed at the end of 2013.
The project has been made possible by a grant of 1.71 billion yen (US$16.6 million) provided by the Japan International Cooperation Agency to assist in Myanmar's communications' network development last December.
Japan has made no secret of its bid to be the champion of Myanmar's development on the international scene. Prime Minister Shinzo Abe will arrive in Myanmar for a three-day visit on Friday, further strengthening the countries ties.