Zhone 7995 Guia Do Utilizador
7. Testing
7-6
September 2004
7990-A2-GB20-20
Remote Send Line Loopback
The local unit 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 into 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.
to the remote unit for 10 seconds. When the remote unit detects the loopback Up
command, it puts itself into 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 Tests or 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 the Up or Down selection.
4. Press Enter.
The local unit stops sending the loopback command automatically after
10 seconds. You cannot stop the Send Line Loopback test manually.
10 seconds. You cannot stop the Send Line Loopback test manually.
The Remote Network Send Line Loopback cannot be started when any other
loopback test is active on the DSL interface.
loopback test is active on the DSL interface.
For the loopback to activate, the remote unit must be configured to enable
Remotely Initiated Loopback.
Remotely Initiated Loopback.
G.703
Port
Port
E1
LIU
Framer
Framer
Transceiver
02-17118
E1
LIU
Framer
Framer
Transceiver
AIS
Local
Remote