AdTek Labs - VOIP SIPJS Phone Premium is a robust browser extension designed for Google Chrome, enabling users to transform their browser into a fully functional softphone. This application is compatible with various SIP PBX systems, including Asterisk and FreeSWITCH, utilizing the WebRTC protocol for seamless connectivity. Key features include a modern side panel interface that maintains web content visibility, support for both outbound and inbound calls, and automatic logging of call history. Users can also manage missed calls effectively and utilize microphone controls for enhanced communication.

Recent updates have introduced new functionalities such as a dashboard for missed call statistics and improved call filtering options. The software ensures users are only charged for successful callbacks, enhancing the cost-effectiveness of the service. Additional features include STUN/TURN support for bypassing NAT restrictions and smart microphone permission handling, making the extension user-friendly and efficient for everyday VoIP needs.