BRTS-100 ISDN TEST SET
b. If the Red Test Status light goes on, the terminals’ wires are crossed— pin 3 of terminal is electrically connected to pin 6 of the other terminal. At this point, you should check the wiring of both terminal A and terminal B.
10.Repeat steps five through eight until all ports on the bus have been checked.
Assume LINE TEST passe independently on every port. Test Set should be in NORMAL mode
PB2
UNPLUG ALL
(IF ANY) TERMINALS FROM BUS
PUT
ON FIRST PORT ON BUS, UNTERMINATED
TRANSMIT,
INITIATE
GREEN LIGHT
SHOULD BE ON
A
Figure 4-9. Pair reversal flow chart (1 of 2).
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