No one knows everything there is to know about technology and that is why suppliers offer maintenance contracts. This can be an important factor for software — the annual fee of 20 per cent of the purchase price is quite common. Some packages are so important to your environment that you can`t even consider waiting for support. Other packages may not be that important. Parking charges (SC) for maintaining standby wiring capable of loading spare parts for repair immediately after a formal request and leaving the base port within 24 hours. Since 1967, submarine cables have been buried as a means of eliminating cable breaks caused by fishing activities on continental plateaus and in some parts of the world to signal water depths of 1,500 metres. The first commercial use of a “sea flight” was made with AT-Tes Sea Plow 3, which equipped TAT 3 and 4 off New Jersey along the length of the continental shelf. Sea Plow 3 was first operated in 1967 by CS John Cabot and has been operated by CS Vercors since 1975. TAT 3 and TAT4 were renovated in 1967 and TAT 5 was the first cable buried in the two continental plateaus of Spain and the United States in 1969. Then the funeral was generalized everywhere possible; As a result, funerals reduced overall error time when fishing activity increased sharply. For example, a rapid evolution was triggered in the cable jet with manned submarines, which culminated in 1976 in the “remotely controlled vehicle” (ROV), when the SCARAB program was developed by the service providers of the Atlantic Cable and Maintenance Agreement (AT-T, BT, FPTT, C-W and Teleglobe). A selection of key references from the telephone coaxial cable period is mentioned in [6,7,8].
ACMA was founded in 1965 and is a not-for-profit co-operative cable maintenance contract that acts exclusively in the interest of its members. ACMA members are companies responsible for the operation and maintenance of under-sea communications and electricity cables, as well as operators of the oil and gas platform in the Atlantic, North Sea and Southeast Pacific. Much of the submarine systems are in addition to private or unionized maintenance contracts for the sea, where they have access to strategically located repair vessels in the area, for a quarterly fee called parking fees. Because cable defects are rare, these vessels are shared by many cable systems, and the likelihood of more simultaneous errors than available vessels is relatively low. Table 17.1 shows a comparison between the two types of maintenance contracts. The maintenance technician should be required to respond to emergency repairs within a reasonable time (usually four hours after the emergency is dered) and to return the system to service within a certain number of hours after arrival (usually within eight hours).