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– Line Type: the type of DS1 Line implemented on this circuit. The type of circuit affects the number of bits per second that the circuit can reasonably carry, as well as the interpretation of the usage and error statistics. Select fromt he following values: • other(1)—Link is disabled • dsx1ESF(2)—Extended Superframe DS1 • dsx1D4(3)—AT&T D4 format DS1 • dsx1E1(4)—Based on CCITT/ITU G.704 without CRC (Cyclical Redundancy Check) • dsx1E1-CRC(5)—Based on CCITT/ITU G.704 with CRC (Cyclical Redundan