The author recounts a personal experience where they were told by their internet service provider that they needed a landline for doorbell functionality despite already having a mobile connection. They decided not to purchase an expensive landline and instead used Twilio's local phone numbers to create a custom solution, setting up a TwiML Bin that forwards incoming calls to another number, allowing them to remotely answer the doorbell without needing a traditional landline. This setup enabled them to have a functional "landline" experience while avoiding unnecessary costs and outdated technology.