Depending on your intent, here is the complete content for both interpretations. 1. Mobilis Algeria: Apps and Services
These apps allow you to make calls over the internet using SIP credentials:
Open your downloaded SIP app and navigate to "Account Settings" or "Add New Account".
You need your SIP User ID (often your phone number), Password/Secret, and the Domain/Outbound Proxy provided by your service provider.
Modern SIP usage with Mobilis usually involves having an active 4G/5G data plan that supports VoIP/SIP signaling. 2. SIP Software & Technology (2022 Context)