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14 Operation on an ISDN Access
ARGUS 145
PLUS
253
14.4.2 BERT start
Single Tests
Bit error rate test
BERT start
Enter the phone number
Select service
Select a B-channel
The ARGUS - Main menu
The speed-dialing memory will now open
(see page 339). Dial your own number to
perform the BERT in an extended call to
oneself (two B-channels) 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.
Enter the B-channel on the keypad (first
press
<Del.>
). 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-dialing
memory.
-
the bit pattern and B-channel / bit rate
used
-
the synchronicity of the bit pattern (in
this example, synchronous)
-
Sync.time in h:min:sec
(The time in which the ARGUS can sync
to the bit pattern)
-
LOS counter: shows the absolute
number of synchronization losses.
Synchronization is lost when at the
error rate is greater than or equal to
20% within a period of a second.
-
The number of bit errors that have
occurred