FREE Phone Calls with Claude Code

NetworkChuck Technology Careers Career & Money

About this video

Chuck connects his 3CX phone system to Claude Code so he can phone his own infrastructure and have it phone him back. He first tests 3CX’s built-in AI receptionist and transcription, then explains why he wanted Claude Code instead: it already holds the context, skills and workflows for his business. Using SIP, he builds a free stack after rejecting a $1,000-a-month single-node product whose underlying SIP and media components were open source. The resulting setup uses Drachtio and FreeSWITCH, plus a local server on his Mac that does voice activity detection, Whisper speech-to-text and ElevenLabs text-to-speech. Because the 3CX SMB free tier does not allow custom SIP trunks, Claude registers as a normal phone extension. That lets him call assistants such as Morpheus on extension 9000 to create a ClickUp task, send a Slack message, or generate thumbnails and then hang up while the work continues. A separate persona, Stephanie on extension 9002, is scoped to his Ceph storage cluster. With a call skill and an n8n workflow that checks cluster health and an SSD-pool threshold of over 70% capacity, Stephanie can troubleshoot proactively and call Chuck when a check returns a flag to do so.

Key takeaways

Claude Code registers with 3CX as a regular extension rather than via a custom SIP trunk, which the SMB free tier does not allow
The voice bridge combines Drachtio and FreeSWITCH with voice activity detection, Whisper for speech-to-text and ElevenLabs for text-to-speech
Different extensions can be given different personas, prompts, guardrails and skills, such as Morpheus for general work and Stephanie for Ceph storage
Calls are not limited to live conversation: Chuck can give an instruction, hang up, and receive the finished result later by Slack
An n8n workflow can query the API server, check for conditions such as an SSD pool over 70% capacity, and trigger an outbound call when action is needed

Episode details: published January 23, 2026 · 19:51 long. Summary written by Self Growth Videos from the episode itself. Business results and any income figures mentioned are NetworkChuck’s own claims, shared for education — they are not typical or guaranteed.

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