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14 Operation on an ISDN Access
ARGUS 145
PLUS
259
14.4.5 B-channel loop
“B-channel loop” mode is required in order to run a bit error rate test using a loopbox (an
ARGUS is the loopbox) at the remote end as well as testing leased lines.
The ARGUS - Main menu
Activate a “B-channel loop”
The ARGUS will wait for a call. Any
incoming call (regardless of the service)
will be taken immediately. The ARGUS will
switch a loop back in the B-channel that is
specified by the exchange and then send
the recieved bit pattern back to the caller/
sender.
Display shown after taking a call:
<Menu>
Open the Main menu:
the “B-channel loop” remains active.
If you press
<TM>
the ARGUS will return to the "B-
channel Loop, wait active" display.
From this menu, you can start a
second B-channel loop connection
(this is also possible using
<TM>
).
<TM>
Opens the Test Manager (page 297)
Exit “B-channel Loop” mode
-
B-channel used and service
-
The caller's number (from:)
-
The number dialed (to:)
-
If available: TON, NP, UUS etc.
<TM>
Opens the Test Manager (page 297)
<Menu>
Open the Main menu.
Clear down the B-channel loop
connection,
the B-channel loop, however,
remains active!
Single Tests
Bit error rate test
B-channel loop