United States : Columbus III and Xtera Communications sign contract to upgrade subsea cable network.Byline: sanjayV03 The Columbus III consortium awarded Xtera Communications a contract to upgrade the transatlantic segment of the Columbus III submarine cable See Telegraph. See See also: Cable Submarine system between Hollywood, FL and Lisbon, Portugal. The work and acceptance testing (programming) acceptance testing - Formal testing conducted to determine whether a system satisfies its acceptance criteria and thus whether the customer should accept the system. was completed on Sept. 30, 2009, and the system is now ready to be placed in service, with Xtera's 20-Gbps differential phase-shift key (DPSK (Differential Phase Shift Keying) A common form of phase modulation used in analog modems. DPSK does not require complex demodulation circuitry and is less susceptible to random phase changes in the transmitted waveform. See PSK, FSK and QPSK. ) submarine line terminal equipment (SLTE SLTE Submarine Line Terminal Equipment SLTE System Level Test Equipment SLTE Submarine Lightwave Transmission Equipment ), offering increase capacity as well as headroom for future growth. The consortium parties participating in the upgrade are AT&T, PT Comunicaes, TATA Communications, Telkom SA
Telkom SA Ltd. (NYSE: TKG, JSE:J653) is a wireline and wireless telecommunications provider in South Africa. Telkom is a semi-privatised, 39% state-owned company. Limited, and Verizon Business. The consortium says the upgrade will increase the capacity between the United States United States, officially United States of America, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third largest country in population and the fourth largest country in area. and Portugal to 160 Gbps initially, thus improving service to other countries such as Africa. The system can accommodate up to 320 Gbps with potential to grow further. "The Columbus III system spans 7,500 km -- more than any other transatlantic link -- and it is a major accomplishment to provide an N x 20 Gbps solution on line plant originally designed for only 8 x 2.5 Gbps," says Jon Hopper, chief executive officer of Xtera. "We are very pleased to be selected by the Columbus III consortium for this strategic upgrade." The Columbus III network was originally placed in service in December 1999 and connects Portugal, Spain, Italy, and the United States. In addition to the diversity of landing it was designed to offer reduced latency from the southern United States The Southern United States—commonly referred to as the American South, Dixie, or simply the South—constitutes a large distinctive region in the southeastern and south-central United States. and the Americas to points in southern Europe and beyond. The introduction of 10-Gbps technology enables a direct, high-capacity, diverse route from the southern United States to southern Europe and allows the Columbus III owners to offer alternative landings to the Northeast corridor in the United States and the U.K. and France landings in Europe. Xtera's submarine upgrade, the NXT NXT Next system, is optimized for operation on existing submarine cables. It offers advanced monitoring capabilities, including monitoring existing submerged repeaters, supports detection of faults in the existing plant, low power consumption, high-reliability sealed clam-shell circuit packs, and NEBS Zone 4 earthquake compliance. The NXT system uses 20-Gbps DPSK to increase capacity in existing fiber, while being completely compatible with the existing repeaters and other equipment. Copyright : Euclid Infotech Pvt. Ltd. Provided by Syndigate.info an Albawaba.com company |
|
||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion