ADTRAN XRT - Manual (Page 75)

61200.153L1-13 Express XR/XRT Quick Start Guide 63
Appendix B. LEDs
Appendix B
LEDs
LEDs
The Express XR/XRT front panel contains five LEDs associated
with the DTE port and the ISDN interface as shown in Figure B-1
and described in Table B-A.
TD RD B1 B2
TEST
PWR
LINE Express XRT
Figure B-1
Front Panel LEDs
Table B-A
Express XR/XRT LEDs
LED Color Description
B1 or B2 Slow Green Flash Attempting SPID registration.
Fast Green Flash Attempting TEI registration.
Off Ready. No data traffic.
Solid Green B channel passing data (in-use).
Solid Amber Loopback protocol test
(one or both channels).
Amber Flash Remote test originate.
PWR/Line Green (On Solid) Link established.
Calls can be placed.
Off No Power.
Flashing Link is not established.
Calls cannot be placed.
TD Green Transmit Data (TxD).
RD Green Received Data (RxD).