5. Testing
5-6
April 2003
8799-A2-GB20-10
Remote Send Line Loopback
The local device initiates this 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 or the remote unit's test timeout value is exceeded.
The Send Line Loopback tests both units. External equipment can be used to
verify the link.
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 DSL & G.703 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 local device stops sending the loopback command automatically after
10 seconds. Status is changed to Sending for 10 seconds, then back to
Inactive.
The Remote Send Line Loopback cannot be started when any other loopback or a
Send and Monitor 511 test is active on the DSL interface.
G.703
Port
E1
LIU
Framer
Framer
Transceiver
02-17118
E1
LIU
Framer
Framer
Transceiver
AIS
Local
Remote
