How to configure Telephone.app for macOS / OS X

To add a softphone to your Mac, search the Mac App Store for Telephone. It's a free and easy app for Macs.

Follow these steps to activate a device with the app:

• In Platform, add the Device and assign User as neded.
• In Platform, while looking at the Device, use the Advanced view to find the SIP credentials we'll need below.
• In Telephone app, choose Preferences, and the + to add an account.
• For Full Name, enter a nick-name for the app. (Can be anything)
• For Domain, enter the sever (or realm) for your account.
• For User Name, enter the username from the Device in Platform above.
• For Password, enter the password from the Device in Platform above.