Following window will be displayed. Enter the Private Circuit Number and press Check button

The eCo Repair Narrowband Quick Test is a continuity check for Narrowband circuits only – i.e. those circuits with a prefix of KX and NX

It should be noted the Narrowband Quick Test is an intrusive test and if the circuit is not already ‘down’ then carrying out the test will result in a loss of service for the duration its takes for the test to complete – this can be up to approximately two minutes. Once started the test cannot be stopped until it reaches completion

The following should also be noted when using the eCo Repair Narrowband Quick Test:

• A short-duration continuity check such as the Narrowband Quick Test is not a suitable test for all faults types and problems of an intermittent nature and erroring type problems cannot be detected with this test.

• All tests must be preceded by an Alarm Check

• A test can only be performed where the Alarm Check indicates the circuit is alarm free

• If the circuit is Alarm Free then an alert is displayed asking the user whether they want to Commence Narrowband Quick Test

• Not all network technologies can support the Narrowband Quick Test and those circuits routed via older non-compatible technologies cannot be continuity checked using this tool. An appropriate message is returned where this is the case

The circuit continuity check is carried out by means of remotely applying loops at both circuit ends and sending a known short-duration test pattern around those loops in a Fig 8 format.

Circuit continuity is confirmed as a Pass result where the test pattern successfully travels the length of the circuit and arrives back at the point of its introduction. A loop can only be applied at the circuit ends however where that circuit terminates on a Network Terminating Unit or NTU and many narrowband circuits, particularly those provided for mobile operators, do not terminate on a NTU. Where a NTU does not exist at one or both circuit ends a loop will be applied at the BT exchange and the continuity check will be established to this point.

In displaying the test results, the Narrowband Quick Test will indicate where the loops were applied – i.e. circuit ends or at the BT exchange. A Fail result indicates a problem has been detected with the circuit and the CP should report the fault to BT using eCo Repair