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EchoLife ONT Maintenance and Troubleshooting Guide

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Caller Emulation Test

Caller Emulation Test

The caller 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 caller 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.

After the POTS port is configured with parameters for the caller emulation test and is enabled with the caller emulation test, the offhook and dialing emulation can be performed on the POTS port. If the called number is correct and the callee is free, the phone of the callee is ringing. After picking up the phone, the callee hears his/her own voice.

Impact on the System

After a POTS port is enabled with the caller emulation test, services carried on the POTS port are interrupted. These services will be recovered after caller emulation is complete.


  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 Caller Emulation Test from the shortcut menu.
  6. In the dialog box that is displayed, set Callee Phone Number, as shown in the following figure.

    Figure 1-9 Caller emulation test

  7. Click Start.


After the caller emulation test is enabled, if the phone on the callee side (whose number is dialed by the emulated caller) rings and the ringing is audible, the signaling connection is successful. A test engineer answers the phone, and if the test engineer's voice can be heard on the receiver, the media channel is available.

Updated: 2019-07-10

Document ID: EDOC1100009118

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