The Echo Test service is used to test the SIP signals and audio streams of SIP phones.
After local users dial a specific call prefix, their calls are routed to miniSIPServer. The server automatically answers the calls and sends the users' voice back to the callers in real time. By hearing their own voice playback, the users can confirm that their phones have been successfully registered and connected to miniSIPServer.
The default specific call prefix for the Echo Test in miniSIPServer is *1001.
No additional configuration is required by default. Users can directly dial the prefix *1001 to initiate a call and perform the echo test. However, during actual deployment, it may be necessary to use another prefix for making test calls, such as *666. In this case, you need to configure a Lua Service for the new prefix.
Please click the menu "Services – Lua services", and configure it as shown in the figure below:
Set the key item Called Number Prefix to the new call prefix, which is *666 in this example. Set the Lua module name to echo_test, which is the built-in service implementation for the echo test inside miniSIPServer. (Please refer to "manual document" for more details about Lua services.)