AT&T administration and, Installation And Maintenance Manual

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21
22
b Try another tie line port, then retest the condition.
> If the condition has been corrected, the original
tie line port is faulty. Go back to step 8.
> If the condition has not been connected, go on
to step 19c.
c Replace the Tie Line Module, then retest the
condition.
> If the condition has been corrected, the original
Tie Line Module is faulty. Go back to step 8.
> If the condition has not been connected, stop
testing and call the equipment supplier.
If the problem was either the tie line port or the Tie
Line Module, call the equipment supplier when you
have finished testing.
Connect the volt meter between the E lead and ground
at the 66-type block for the tie line being tested.
> if the voltage is -48 volts, go on to step 21.
> If the voltage is not -48 volts, go to step 19.
Select the tie line being tested and go off hook at
station A.
Reconnect the volt meter between the M lead and
ground at the 66-type block.
NOTE: This measurement must be made within 5
seconds after going off-hook
> If the voltage is -48 volts, go on to step 23.
> If the voltage is not -48 volts, go to step 19.
4-16 Tie Line Troubleshooting