Figure 6-13. Dsx-1 Local Loopback Test; Figure 6-14. Line Loopback Test - ADTRAN T3SU 300 User Manual

#x Local Loopback
During this test, all information from the network side (DS3) for the
selected DSX-1 interface is looped back towards the network. This
test is similar to the Framer Loopback test (described previously),
with the exception that this test penetrates the circuitry deeper into
the Quad DSX-1 interface card. See Figure 6-13 for an illustration of
this test.
DSX-1
#x Line Loopback
During this test, all information on the selected DSX-1 interface,
including framing, is looped back towards the DTE. See Figure 6-14
for an illustration of this test.
DSX-1
61202217L1-1B
T3SU 300
Quad DSX-1

Figure 6-13. DSX-1 Local Loopback Test

T3SU 300
Quad DSX-1

Figure 6-14. Line Loopback Test

T3SU 300 User Manual
Chapter 6. Diagnostics
DS3 MUX T3
DS3 MUX T3
103