Adtran Express XL Manual Do Utilizador

Chapter 1: Understanding ISDN and the Express XL/XLT

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Express XL/XLT User Manual

LNK

Flashes when the link is being negotiated; solid when the link 

is active.

B1

Flashes when a call on the B1 channel is in progress; solid 

when a call is connected.

B2

Flashes when a call on the B2 channel is in progress; solid 

when a call is connected.

Loop

Indicates ISDN layers status.  Indicator is off when layer 1 is 

down.  A fast flash indicates layer 1 is up and layer 2 is down.  

A slow flash indicates layer 2 is up and layer 3 is down.  A sol-

id illumination indicates all layers are up.

PWR

Flashes when self-test has failed; solid when unit is powered 

on and self-test has passed.  

ERR

Illuminates when self-test or front panel test has failed.

B1/B2

Indicates test selected by front panel buttons.

The echo request test can be executed by pressing the SELECT button one time 
and pressing TEST. A ping test is executed by pressing the SELECT button 
twice and pressing TEST. The IP address pinged comes from the previously 
pinged address set in the menu. If it is blank, the default gateway is used. If 
the default gateway is blank, an error is indicated. The ERR indicator illumi-
nates if any pings are not returned. The dial self-test is invoked from the front 
panel if the SELECT button is pressed three times. The LDN(s) must be al-
ready programmed for this test to work.