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EchoLife ONT Maintenance and Troubleshooting Guide

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VoIP Loop-Line Test

VoIP Loop-Line Test

A VoIP loop-line test is used for locating a fault that occurs on wires A and B. It includes the voltage test, resistance test, and current test.


  • The user is a user with the operator authority or higher.
  • The OLT and the NMS communicate with each other properly.
  • The NMS is able to discover an online ONT and VoIP service parameters are configured.


If a loop-line test is required in communication, No Test must be set to Force.


  1. In the Main Topology, double-click the required OLT in the Physical Root navigation tree; or right-click the required OLT and choose NE Explorer from the shortcut menu.
  2. Choose GPON > GPON Management from the navigation tree.
  3. On the GPON ONU tab page, set the filter criteria or click to display the GPON ONUs.
  4. Select a required record from the ONT list, and then click the Current ONU: UNI Port Info tab in the lower pane.
  5. Select a record from the list whose UNI Type is Pots, right-click, and choose Outer Line Test from the shortcut menu.
  6. In the dialog box that is displayed, set Busy Processing to No Test or Force, as shown in the following figure.

    Figure 1-13 VoIP loop-line test

  7. Click Start. After the test is complete, test results will be displayed on the NMS.
Updated: 2019-07-10

Document ID: EDOC1100009118

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