Indicator color description – ADTRAN D4 U-BR1TE V User Manual
Page 7
7
Section 61104020L4-5, Issue 3
61104020L4-5C
3. TESTING
The U-BR1TE V responds to embedded operation
channel loopbacks, including B1, B2, and 2B+D, when
configured for D channel operation. When used in B1
configuration (non-D channel modes of operation) the
U-BR1TE V will respond to an in-band DS0 DP
latching loopback sequence. When remote testing is
not available, or during isolation of trouble or
equipment malfunction, the U-BR1TE V front panel
provides local test capabilities. Using the internal
2047 pseudorandom test pattern generator or the
bantam jacks allows craft personnel to test in both the
downstream and upstream directions, including
loopback for 6 addressable ISDN devices and the
customer’s NT1.
Table 2. Rotary Switch Options
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Table 3. LED Indication
Loop Status (LP)
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F
Indicator
Color
Description