Aethra d2000 lite User Manual

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USER’S MANUAL                                                                                 ISDN TESTER AND ANALYZER D2000
PRO
/D2000Lite/D2000 
 
During the test the instrument makes a loop on every active B channel. 
The screen indicates the total number of calls and the number of failed cycles the 
instrument has detected.  
 
“Failure” means that the instrument was not able to make all 
calls. 
To view and analyze failures:   
 
Scroll through the pages indicating a failed call with related 
information. Observe that the cause number for each 
failure appears on the screen. 
 
This example shows Failure 1 with related information, such as the time of the failure, 
the call with the corresponding burst that has failed, and the cause number. 
3.7. Performing a U Interface Test (NT1-U only) 
 
Use the U INTERFACE test to check the line quality of the U interface to a user. Line 
quality is measured in analog way.  
 
 
 
 
 
 
 
CHAPTER 3 - PERFORMING A MANUAL TEST 
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