Link:- Official Linphone Website
Once you have done this and the app is installed, you will need to email firstname.lastname@example.org for your SIP Username & Password.
Once you have done this, click "I Understand"
On the following Page, enter the details you have been given by the support team. Once you have completed the information, the page should look similar to the below example.
Once these details have been entered, click USE
Your Softphone is then ready to use.
You can then use the search bar to search for contacts or dial numbers.
IMPORTANT: Please note, we are not Linphone and do not develop this software - we can only assist you with the Linphone softphone product if you are an ONSIM customer.