I built a phone system because no one answers me
About this video
Frustrated that his wife and kids never answer cell phones or watches because devices are missing or silenced, the creator builds a house-wide and business phone system with 3CX, the video’s sponsor. He shows the free 3CX SMB cloud plan — described as free forever for up to 10 users, hosted by 3CX with no hardware required — and sets it up by signing in, adding users, and provisioning softphones via the 3CX app and QR code. He also mentions running an on-prem instance himself as a VM on Proxmox. For physical desk phones on a cloud instance he explains you need either a router phone or a Raspberry Pi running 3CX SBC (Session Border Controller), walks through imaging Raspberry Pi OS Lite 64-bit, SSHing in, and installing the SBC from a command in the 3CX portal. He provisions a PoE Snom desk phone by model and MAC address via the SBC. Because his daughters wanted old wall/retro phones, he adds analog phones through a Grandstream HT801 ATA, which bridges RJ11 analog/POTS devices to SIP/VoIP. For outside calling he adds a SIP trunk from VoIP.ms, buys a DID number, configures inbound settings and an outbound rule, and builds a digital receptionist IVR. Finally he connects the system to Home Assistant’s VoIP integration so picking up an analog phone can talk to his local AI assistant Terry to answer questions and control the home, using tricks such as off-hook auto-dial and the Opus codec, with warnings that the ATA-to-Home-Assistant bypass is unofficial.
Key takeaways
- Start free and hardware-free: the creator uses 3CX SMB cloud for up to 10 users, plus softphones, before adding any physical phones
- Cloud 3CX plus local physical phones needs a bridge — either a router phone or a Raspberry Pi running the 3CX SBC
- Modern SIP phones provision by model and MAC address; old analog phones can join the same system through an ATA such as the Grandstream HT801
- Internal extensions are not enough for real-world calling — you need a SIP trunk and a DID from a provider like VoIP.ms, with inbound routing and an outbound rule
- An IVR/digital receptionist and ring groups solve the original problem better than one phone ringing: callers pick a person, or one house number rings everyone
Episode details: published December 9, 2024 · 38:15 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.
← Previous: I started a blog…..in 2024 (why you should too) · Next: who is this even for?? (Raspberry Pi 500) →
All NetworkChuck videos · NetworkChuck profile · NetworkChuck on YouTube





