User manual

2 NT1 ACE
3
User Manual 61200236L1-1
NT1 ACE
3
User Manual
The U-interface complies with ANSI T1.601 and ITU-
TI.430 recommendation Standard. The S/T-interface com-
plies with ANSI T1.605 and ETSI ETS 300012 Standard.
The ADTRAN NT1 ACE
3
is a stand-alone unit. An external
power source is provided for the NT1 ACE
3
. External power
is supplied by the ADTRAN Power Supply, part number
336012VUR01.
LED Indicators
Table 1-A describes the status of the LEDs located on the
front panel of the NT1 ACE
3
. There is a Ready and Error in-
dicator for each port of the NT1 ACE
3
.
Table 1-A
Status Indicators
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
LED Color Description
READY Green S/T and U- interfaces ready
to place call
ERROR Red S/T or U-interface not ready