Testing
5-5
7985-A2-GB20-00
October 1998
Send Remote Line Loopback
The LTU initiates the test by sending a line loopback up or down command to the
remote unit for 10 seconds. When the remote unit detects the loopback up
command, it puts itself in line loopback and lights the front panel test LED. The
remote unit remains in loopback until it receives a loopback down command. The
send line loopback tests both units. External equipment can be used to verify the
link.
98-15939-01
NTU/LTU
Port
Interface
Framer
EIA-530
Port
CAP
All 1s
NTU/LTU
Port
Interface
Framer
CAP
Local
Remote
"
Procedure
To run a Remote Send Line Loopback:
1. Position the cursor at the Up or Down selection next to Send Line Loopback
on the Network Tests screen.
2. Press the spacebar to select either Up or Down.
3. Position the cursor at the Send command next to Up or Down selection.
4. Press Enter.
The loopback stops automatically after 10 seconds. You cannot stop the test
manually.
The Send Remote Line Loopback cannot be started when any other loopback or
a Send and Monitor 511 test is active on the network interface.
