The RJCN was constructed by Rostelecom and KDDI according to the Construction and Maintenance Agreement signed in December 2006, to meet the rapid growth in demand for not just Japan-Russia communication, but also Japan-Europe broadband Communication with minimal transmission delay.

Upon completion of the RJCN, it was seamlessly connected with the Transit Europe Asia (TEA) terrestrial cable, a trans-Russia DWDM network owned by Rostelecom.

RJCN and TEA Cable Route

With the combination of the RJCN and the Transit Europe Asia (TEA) network, KDDI and Rostelecom can offer capacity up to 10 Gbps between Japan and Russia or Europe, with the shortest latency less than 200 ms. For example, the round trip delay (RTD) over the RJCN and TEA network between Tokyo and London is 196 ms, with a significant improvement compared with the trans-pacific route via the US and the submarine cable route via the Indian Ocean.

RJCN+TEA and Alternative Routes between Asia and Europe

On the other hand, the RJCN and the Transit Europe Asia (TEA) network enables an alternative solution for traffic between Asia and Europe. For example, the following four solutions may be available for the traffic between Hong Kong and London:

  • Solution I:   trans-pacific route via the US continent and Atlantic;
  • Solution II:  submarine cable route via Indian Ocean, the Persian Gulf and the Mediterranean, over SMW3, SMW4, or FEA, etc.
  • Solution III: terrestrial cable route via Mainland Chiina and Russia, over TEA, ERA(Europe-Russia-Asia) or ERMC (Europe-Russia-Mongolia-Asia)
  • Solution IV: submarine+terrestrial cable route via intra-Asia cables to Japan and transiting to the RJCN and TEA network.

And the RJCN and TEA network is going to offer transparent 10 Gbps wavelength in the end of 2011.