Power and Repeaters
The T1A power feed system (60 mA constant current source at -130 Vdc) can power multiple span line repeaters in any of several power feed options. The number of
repeaters is a function of the repeater voltage and wire gauge used between repeaters. The external power feed resistance of the T1A card must not exceed a 2000 Ω
equivalent resistance for the network.
Alarms, Test and Stastics
The transceiver has selectable alarm thresholds, BER calculation, performance monitoring statistics, and alarm history.
Line Coding and Signaling
Line coding options are AMI or B8ZS. The T1A card does not perform signaling conversion or datalink termination, only clear transport.