LED indicators System Configuration
When the T1-XCVR cards are linked in an AccessMAX system, the green ACTV LED indicates that the unit is communicating with the counterpart T1 and a datalink is present. The ACTV LED blinks rapidly (120 flashes per minute) during self-test, and slowly (60 fl ashes per minute) during a loopback test. The red FAIL LED indicates a plug-in card failure. The red LOC LED indicates a problem with in coming data. The amber REM LED indicates that the far end is not receiving data. The card can be disabled using CLI commands, in which case the green ACTV LED will turn off (other LEDs may remain on). If all LEDs are off, this indicates either Alarm Indication Signal (AIS) or that the card has been disabled via software.
LED indicators TR-8 Configuration
When the T1-XCVR unit is connected in a TR-8 configuration, the green ACTV LED indicates that the card is communicating with the switch and that the TR-8 group “A” datalink is present. The red FAIL LED indicates a hardware failure. The red LOC LED indicates a problem receiving data. The yellow REM LED indicates a protection switch from the far end.
Alarms, Test and Stastics
The T1-XCVR transceiver has selectable alarm thresholds, BER calculation, performance monitoring statistics, and alarm history.