The Trans-Caspian Fiber Optic Cable is a backbone fiber-optic cable between the Republic of Azerbaijan and the Central Asian Republics through the bottom of the Caspian Sea, being an Asian part of the mega Digital Silk Way project, and creating a digital telecommunications corridor. The Trans-Caspian Fiber Optic Cable is a backbone fiber-optic cable between the Republic of Azerbaijan and the Central Asian Republics through the bottom of the Caspian Sea, being an Asian part of the mega Digital Silk Way project, and creating a digital telecommunications corridor. The Trans-Caspian Fiber Optic Cable is a backbone fiber-optic cable between the Republic of Azerbaijan and the Central Asian Republics through the bottom of the Caspian Sea, being an Asian part of the mega Digital Silk Way project, and creating a digital telecommunications corridor between Europe. The ambitious Azerbaijan-Kazakhstan Trans Caspian Fiber Optic (TCFO) project, set to lay a fiber-optic communication line (FOCL) across the Caspian Sea bed, is slated for completion by 2025. President Kassym-Jomart Tokayev of Kazakhstan disclosed this milestone during a joint session of the. ASTANA – Kazakhstan and Azerbaijan have officially commenced the active phase of a telecommunications project to lay the first-ever underwater fiber optic cable along the bottom of the Caspian Sea. The arrangement was officially signed during a visit by Kazakhstan's Prime Minister Olzhas Bektenov to Baku, Azerbaijan, as reported by Primeminister. kz «The project is. The Trans-Caspian Fiber-Optic Cable project, set to establish the first fiber-optic connection between Azerbaijan and Kazakhstan, has reached a new milestone in its construction phase, which is expected to be completed by the end of 2026.