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Basic iDSL and T1/E1 test modes 75
Model 3196RC T-DAC User Manual 5 • Troubleshooting and maintenance
Figure 52. Local loopback
To select local loop go to the iDSL page and find the port to be placed under loopback. Locate the
Test Mode
drop down menu and select
local Loop(1)
. Go to the bottom of the screen and click on the
Submit
button.
To turn off the loop mode, use the Test Mode drop down menu, select “Off” and click on the
Submit
button.
The port field should be highlighted in green when the port returns to data mode.
Remote loop
The remote loop, initiated from the 3196RC, will place a remote CPE (3092) in loopback mode. Under this
condition, data sent by the 3196RC over the DSL link and destined to the iDSL port of a Model 3092 will be
sent back to the 3196RC (see figure 53).
Figure 53. Remote loopback
Note
The test mode LED on the CPE will illuminate when the CPE’s
iDSL port enters remote loopback mode. However the CPE does not
notify users when its iDSL port enters remote loopback mode. There-
fore, you may wish to notify any active users connected to the CPE
device that service will be interrupted before executing any remote
loopback testing.
3196RC
T1/E1 port
1
DSL port
DSL data stream
iDSL port
3196RC
1092