Linphone is an open source SIP phone/client application for voice/video calls and instant messaging. It's available on multiple platforms including desktop and mobile.
Let your AI agent call your phone and talk to you — MCP servers for live, interruptible voice calls + tiered alerts, using free self-hosted pieces (pjsua2 + whisper.cpp + Linphone). No paid telephony, no extra API key.
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Apache 2.0
Why this server?
Enables the AI to place SIP calls to a Linphone account on a phone and conduct two-way voice conversations, including multi-turn dialogue and interruption handling.
Enables an AI to place zero-cost SIP voice calls to a user's iPhone and hold multi-turn spoken conversations, with speech-to-text, text-to-speech, and barge-in interruption, exposed as MCP tools such as call_start, converse, and call_end.