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EchoLife ONT Maintenance and Troubleshooting Guide

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Automatic Emulation Test

Automatic Emulation Test

The automatic emulation test verifies the basic calling services and preliminarily locates a fault.


  • 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.
  • The user connected to the POTS port that is enabled with automatic emulation successfully registers with the softswitch.


The call emulation test verifies the basic calling services during service provisioning, and works with the POTS line test to preliminarily locate a fault.

There are three types of call emulation tests: caller emulation test, callee emulation test, and automatic emulation test. The call emulation test is irrelevant to protocols for the upstream transmission. That is, it is applicable to SIP and H.248.

Before enabling an automatic emulation test, you need to enable a callee emulation test and then analyze the test according to the returned results. The test is performed automatically.

Impact on the System

  • After callee emulation is enabled on the POTS port, the callee cannot hear the dial tone after offhook but hears mute. After the POTS port is enabled with callee emulation, services carried on the POTS port are interrupted. These services will be recovered after callee emulation is complete.
  • After a POTS port is enabled with callee emulation, if the user of this port is not called by a caller, the user will exit callee emulation in three minutes. Within these three minutes, the VoIP service and other services are interrupted.
  • After a POTS port is enabled with the automatic emulation test, services carried on the POTS port are interrupted. These services will be recovered after automatic emulation is complete.


  • Before enabling an automatic emulation test, enable a callee emulation test. This is because when an automatic emulation test is enabled, the dialing operation will be automatically performed. If the callee is not in the callee emulation state, the test will fail.
  • In the automatic emulation test, the preset called number must be the number of the callee.


  1. Enable a callee emulation test for the callee. For details, see Callee Emulation Test.
  2. Enable an automatic emulation test for the caller.

    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 Auto Caller Emulation Test from the shortcut menu.
    6. In the dialog box that is displayed, set Callee Number to the number of the callee, as shown in the following figure.
      Figure 1-11 Automatic emulation test

    7. Click Start.


After an automatic emulation test is enabled, the caller automatically dials the number of the callee to call the callee and the callee picks up the phone automatically. After the test is complete, test results are displayed on the NMS.

Updated: 2019-07-10

Document ID: EDOC1100009118

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