Make and receive voice calls using VoIP services. Manage contacts and call history. Set up accounts with preconfigured providers. Use advanced call controls and mute features. Support for high-quality audio without battery drain.
Manage settings on iPhone. Activate or deactivate when busy, no answer, or out of reach. Check status of each type. Use standard GSM codes for carrier compatibility.
Make and receive calls using with device portability. Transfer active calls between devices. Maintain consistent user identity across devices. Integrate with Unified Communications platform. Support SIP protocol for voice communication.
