Black Box BRTS-100 manual Pair reversal flow chart 1

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 BRTS-100 (A)

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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