Launching Linphone
First download the app on Playstore, Applestore or the preferred app for your device.
Linphone Website: https://www.linphone.org/category-product/windows-desktop
After installing Linphone, please launch the softphone from your applications menu.
If this is your first time launching Linphone, please view the welcome message and then select the Use SIP Account option.
If this is not your first time running Linphone, please bring up the menu (represented as 4 horizontal bars near the top left corner of the application) and select Assistant.
Configuring your SIP account
We will now create a profile and enter the required credentials; such as your landline number, password, and SIP server:
All the details above(Username, Password, Domain, Transport is always UDP unless told otherwise) you will be provided with.
The configuration screen should look similar to the one shown in the picture below:
That's it! You can now make a phone call.
You can test for incoming and outgoing calls.