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

PWR

Express XRT

 

TEST

 

LINE

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).

 

61200.153L1-13

Express XR/XRT Quick Start Guide

63

Page 75
Image 75
ADTRAN 336048VUR-2, 3360.9VU01, 1200153L2, 1200153L1, XRT quick start Appendix B LEDs, Table B-A, Led, Color Description