Telecommunications
154 episodes · Page 3 of 7
#4602: The Two Manifests: API vs PNR Explained
Passenger manifests aren't one list — they're two distinct data transmissions with different purposes, formats, and legal frameworks.
#4600: Why Can't You Port Your Number to Twilio?
Number portability breaks when you leave the carrier system. Here's why Twilio can't receive Israeli numbers — and what you can do instead.
#4599: Why Phone Numbers Are Stuck in the 1970s
Why SMS fails on virtual numbers, and what a SIP-first, IPv6-style phone number system would actually take.
#4578: Is Google Groups Just a Mail-Routing Workaround?
Daniel's been using Google Groups as a mail router for years. Is there a better way, or is he stuck with the workaround?
#4569: Dialing Without a Switchboard: Twilio Number Normalization
Twilio expects E.164, but Israel dials 0-3-... Here's what breaks when you become your own carrier.
#4567: eSIM Adapters, US Data, and Twilio: A Traveler's Setup
eSIM adapters, US data plans, and running your phone through Twilio — a practical guide for frequent travelers.
#4543: WhatsApp Business API vs App: Which Fits Your Solo Practice?
A solo consultant's guide to choosing between the WhatsApp Business app and the API for client messaging.
#4542: Going Fully SIP: Why It's Not Ready (Yet)
A deep dive into the three structural reasons you can't ditch your carrier for Twilio and SIP—yet.
#4541: What Would We Build If Cellular Started From Zero?
Exploring whether GSM's legacy parts—IMEI, SIM, circuit switching—are still needed in an all-IP world.
#4533: The Hidden Command Line in Your Phone's Dialer
Star-pound codes aren't just for forwarding calls. Your dialer is a secret command line with three different systems hiding behind it.
#4499: Twilio for Small Business: IVRs, SIP & Phone Trees
How to build professional phone systems with Twilio — IVRs, round-robin routing, voicemail transcription, and SIP setup.
#4420: Tracing the IP Path of Your Phone Call in 2026
Do your calls travel over IP or old copper wires? We trace the messy, incomplete migration of telephony.
#4418: Where Is the Internet Still Missing?
96% coverage, but 2.6 billion people are offline. Where are the truly dark spots on Earth?
#4378: SSIDs vs Radio Noise: What Actually Happens
More SSIDs don't mean more radio interference—beacon frames are sequential, not collisions. Here's what actually matters.
#4353: GPIO Pins: Your SBC's Hidden Superpower
What GPIO pins actually do, where the power limits are, and which sensors work on each side of the divide.
#4318: Fiber vs Copper: Pulling Cable in a Rental Apartment
Should you pull fiber or Ethernet through conduit in a rental? One is forgiving, the other is expensive glass.
#4230: Modbus to Smart Home: The Real Bridge Guide
Three gateways tested, three hurdles revealed. What actually works when bridging OT gear to Home Assistant.
#4190: LoRa Through Concrete: Real-World Parking Sensor Physics
Why your LoRa parking sensor can't reach through three floors — and how to fix it.
#4183: Stacking Three Devices Into One Superphone
What if the best phone isn't a phone at all? Stacking a modem, battery, and handset into one brick.
#4179: Why Your Phone Number Link Is Costing You Customers
That non-clickable phone number on your site is quietly bleeding leads. Here’s the five-minute fix.
#4080: How Resumable Uploads Actually Work
What happens when your file transfer fails at 92% — and the app just picks up where it left off.
#4033: Why Your Fiber Upload Is Stuck at 250 Mbps
Your fiber plan promises 5 Gbps down but only 250 Mbps up. The bottleneck isn't the glass — it's the pricing sheet.
#4031: The Truth About Fiber Rollout Metrics
How “homes passed” hides a 24-point gap between political boasts and real availability.
#3907: Why the DNS Postman Metaphor Fails Learners
The postal metaphor for DNS is everywhere—but it's failing millions of learners. Here's what works better.