Aethra d2000 lite Manuel D’Utilisation

Page de 186
ISDN TESTER AND ANALYZER D2000
PRO
/D2000Lite/D2000                                                                                USER’S MANUAL
 
 
 
To begin to send tones toward the acoustic band. 
 
To stop sending tones toward the acoustic band. 
 
To send another tone (next), in case of ‘Sweep Time: 
Manual’. 
 
In order to send the next tone, in case Freq.start is equal 
to Freq.stop.  
 
In order to send the previous tone, in case Freq.start is 
equal to Freq.stop. 
3.13.3. Measuring the B channel round trip delay (ECHO) 
The delay can be measured in ISDN configuration, after connecting a B channel. The 
delay is the time needed to transport a byte from the local to the remote terminal and 
back. Its value depends on the call routing. 
 
The line’s response time measurement can’t be carried out in 
case the tone generator test is in progress.  
 
86
 
                           CHAPTER 3 - PERFORMING A MANUAL TEST