Aethra d2001 nx 用户手册

ISDN TESTER AND ANALYZER D2001

NX

 

                                                                                        USER’S MANUAL 

 

The ‘loop’ test allows to check a point-to-point connexion by the use of a testing 
equipment and a remote loop. According to the network type, it may be a physical 
loop or a device used as terminal (e.g. a second D2000

PRO

 set as ‘act as loopbox’) 

which performs a logical loop. The ‘loop’ test checks the global quality of the line, but 
it can’t determines the problematic route (NTÆTE or TEÆNT). 

To perform the test in ‘loop’ mode, a remote instrument must be set  with an active 
loop on the channel. 

 

‘End-to-end’ mode qualifies the line between two terminals (point-to-point), in order to 
carry out this test you have to use two testing equipments and place them at the 
extreme points of the line. It is possible to perform this test over ISDN connections 
with signalling protocol over D channel, and over leased connections. The test ‘end-
to-end’ allows to check the quality of the single line (NTÆTE and TEÆNT) going to 
determinate the problematic route. 

To perform the test in end-to-end mode, a remote instrument must be set with the 
same test configuration of the local instrument, by pressing the START key on both 
instruments. 

In case of leased connections, without signaling protocol, data is sent toward the 
channel when the softkey START is pressed and the physical layer is active. 

Define the following parameters for a BER test: 

 

 

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  CHAPTER 3 - PERFORMING A MANUAL TEST