OC-768

OC-768 is a network line with transmission speeds of up to 39,813.12 Mbit/s (payload: 38,486.016 Mbit/s; overhead: 1327.104 Mbit/s).

As of December 2007, AT&T has deployed 50,000 wavelength-miles of OC-768 in its Internet/MPLS backbone network [1]. OC-768 SONET interfaces have been available with short-reach optical interfaces from Cisco since as early as 2006. Infinera made a field trial demonstration data transmission on a live production network involving the service transmission of a 40Gb/s OC-768/STM-256 service over a 1,969 km terrestrial network spanning Europe and the U.S.

Read more here.