ADTRAN NT1 ACE4 user manual LED Indicators, Status Indicators

NT1 ACE4 User Manual

The U interface complies with ANSI T1.601 and ITU- T1.430 Recommendation Standard. The S/T interface com- plies with ANSI T1.605 and ETSI ETS 300012 Standard.

The ADTRAN NT1 ACE4 is a stand-alone unit and is pow- ered by an external power supply (the ADTRAN power supply, part number 336012VUR01).

LED Indicators

Table 1-1 describes the status of the LEDs located on the front panel of the NT1 ACE4. There is a READY and ERROR indicator for each port of the NT1 ACE4.

		Table 1-1. Status Indicators
LED	Color		Description
READY	Green		S/T and U interfaces are
			ready to place call.
ERROR	Red		S/T or U interface not
			ready.

If an ERROR indicator is illuminated, check the flash rate of the READY indicator to determine the source of the error. A faster 8 Hz flash rate (8 flashes per second) indicates a net- work problem. A slower 1 Hz flash rate (1 flash per second) indicates an S/T interface problem.

2 NT1 ACE4 User Manual 61200242L1-1