19 Operation on an ISDN Access
ARGUS 152
219
BERT Start
Single tests
BERT
BERT start
Enter the phone number
Select service
Select B channel
ARGUS - Main Menu.
The speed-dialling memory will now open
(see page 364). Enter/dial your own
number to perform the BERT in an
extended call to oneself (two B channels)
Enter/dial a remote number for a BERT to
a loopbox (one B channel) or end-to-end.
Using the cursor keys, select the service
which should be used for the BERT.
First press
<Delete>
and then enter the
B channel on the keypad. If you enter an
"*", the ARGUS will choose any B channel
that is free.
BERT Start
The ARGUS display after the connection
has been setup and synchronized in both
the send and receive directions:
Scroll through the speed-dialling
memory.
- The bit pattern and B channel / bit rate used
- The synchronicity of the bit pattern
(in this example, synchron)
- Sync. time in h:min:s
(time in which the ARGUS can sync to the
bit pattern)
- LOS counter: shows the absolute number of
synchronization losses.
Synchronization is lost at an error rate
greater than or equal to 20 % within a
period of a second.
- The number of bit errors that have occurred
