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4-24
Diagnostics
GDC 048R154-000
Figure 4-23
DTE Remote Digital Loopback with Self Test, Front
Panel Control
2. Press RL and ST switches to start DTE
Remote Digital Loopback with Self Test.
Press switches again to end test.
1. T1 indicator must be Off; press T1
switch if indicator is On.
3. TM, ST, and RL indicators are
On during the test.
TM flashes to indicate detect-
ed errors.
General Data-
Comm
DeskTop
T1
ON
SD
RD
OOF LOS BPV ALM
TM
T1
ST
LL
RL