MAINTENANCE
6.If “no loop current on outgoing call” is displayed, either of the above conditions could be true. It is more likely, however, that the facility is down .
7.Place an outside call on the line using the trunk test call procedures listed in outgoing Trunk Problems. If you get fast busy tone, switch trunk ports and try again.
8.If the problem does not move, replace the Loop Start CP.
9.If the problem moves, the fault is with the CO. Notify CO personnel through the proper channels.
Error Log Interpretation: Ground-Start Trunks
Procedures:
1.Check the Error Log for messages pertaining to
2.If “no loop current on incoming call” is displayed, no loop current was detected on an incoming call. The CP detected ringing, but not loop current when it closed the loop. In this case, the CO facility is probably good, but either the current sensor on the CP is faulty or the CO battery circuit is faulty.
3.Switch trunk ports and see if the problem moves to the new ground- start trunk.
4.If the problem does not move, replace the Ground Start CP.
5.If the problem moves, the fault is with the CO. Notify CO personnel through the proper channels.
6.If “fault on outgoing seizure” is displayed, either of the two conditions is true. The first condition is that the trunk CP did not detect loop current as in the case of the “no loop current on incoming call” message. The second condition is that the trunk CP did not detect tip ground. This could be either a problem with the CO or the ground detector on the CP.
7.Place an outside call on the line using the trunk test call procedures listed under Outgoing Trunk Problems. If you get fast busy tone, switch trunk circuits and try again.
