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Testing
8-6
8700-A2-GB20-00
April 2000
DTE Loopback
DTE Loopback loops the DSX-1 or G.703 signal back to itself before the signal is
sent to the Framer. Also, for DSX-1 models:
H If the DSX-1 port is in a DS0 cross-connection, corresponding DSL time slots
are sent all ones.
H If the DSX-1 port is in Bypass mode or a DS1 cross-connection, all ones are
sent to the corresponding DSL port and data received on the DSL link is
ignored.
CAP
DSL
Port
DSX-1
or G.703
Port
CAP T1/E1
LIU
FramerFramerTransceiver
99-16614
All Ones
" Procedure
To run a DTE Loopback:
1. Position the cursor at the Start command next to DTE Loopback on the
Network & DSX-1 or Network & G.703 Tests screen.
2. Press Enter.
The Start command is changed to Stop.
3. To manually stop the test, verify that the cursor is positioned at the Stop
command.
4. Press Enter.
A DTE Loopback cannot be started when any other loopback test is in progress.