Download and open the SessionTalk app on your smartphone. You will be prompted to create an account:
Select "Generic SIP"
Enter the following details:
"Account Name" - any name of your choice
"Display Name" - your full name
"UserName" - the internal extension number from the employee configuration section
"Password" - SIP password from the employee configuration section
"Domain" - MikoPBX server address
In the "Advanced" section, set the priority for "WiFi Codecs" and "Mobile Codecs"
In "Advanced" → "Miscellaneous" → "Incoming Caller Id", select "P-Asserted-Identify"
Switch the checkbox "Enabled" to "On" and wait for the registration to complete.
Successful registration will be indicated by the message "Registered" in the app interface, as well as "Online".