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BRTS-100 ISDN TEST SET
Figure 4-6. Check loop flow chart (1 of 3)
TX & RX
PAIRS ARE
TRANSPOSED
PUT CIRCUIT IN
POINT TO POINT
CONFIGURATION
(CONFIG. 1)
A
CHECK LOOP
LINE, LINE TEST
INITIATE
TEST STATUS?
CHECK IF TX &
RX PAIRS ARE
TRANSPOSED
DONE
GRN
RED
SWITCH TO
REVERSE, INITIATE
LINE TEST
LINE, RECEIVE
SWITCH TO
NORMAL
CHECK LOOP
Assume
1. Power good
2. LINE TEST failed
3 Test Set is in NORMAL mode