AT&T 518-600-016 manual Try another tie line port, then retest the condition

bTry 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.

cReplace 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.

20Connect 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.

21Select the tie line being tested and go off hook at station A.

22Reconnect 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