In the beginning of 2007 Neterra completed a project for crossing the Danube river with fiber optic cable. The project connects the Bulgarian city of Russe with the Romanian town of Guergevo and includes fiber optics between Neterra's Telecom Center Russe and Romanian service providers  through the water border of the two countries. Several fiber optics have been placed for greater reliability. They have enough capacity to satisfy the long-term needs of the international  telco operators.

A special fiber optic cable for underwater laying with appropriate protection and steadiness has been used.

The technology of laying and protection of the fiber optics is unique and has been engineered specially for the project.