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 cloud miniSIPServer. The virtual 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 the virtual server.
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.