Telecom

πŸ“± Adventures in Starting an eSIM Side Business

October 11, 2025

Earlier this year I was planning a trip to the πŸ‡ΊπŸ‡Έ US. Despite the current political situation there, I had a great time and met some wonderful people. I did not have a single negative experience.

During trip planning, I started looking for an eSIM. An electronic SIM card for mobile data while I am in the US. There are many options. But I noticed something: not a single one of my options was 🦁 Dutch.

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😐 The Odido Saga: Lawsuit Threats Over Joke Site

December 8, 2024

TL;DR (lawyers hired by) Odido is threatening to sue me over a joke.

Introduction and background

At the beginning of 2024, I launched a new website: heeftodidoalipv6.nl (translated: ‘does odido have ipv6 already?’).

The website would display a big fat ‘Nee, Helaas! (No, unfortunatley!)’ together with links to competitor ISPs in the Netherlands for every word in their slogan ‘Het kan ook zo’.

This website was meant as a joke and a message to Odido. It’s time to deploy IPv6. And Odido is not only very, very late; they also haven’t communicated about their roadmap in the slightest. Everyone benefits when the world switches to IPv6, so why is it so hard? Everyone has had enough time.

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☎️ Asterisk as a Teams Direct Routing SBC

January 3, 2022

Teams is getting more and more popular everyday. Microsoft includes it for free with their Office Suite and since a lot of organizations are heavily invested into using Microsoft products, people just start using it.

Unfortunatley, this is contributing to the centralization of the internet.

This post isn’t about that though.

This post is a written version of a video I made on making Asterisk a Teams Direct Routing SBC. You can check the video out by following this link.

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Pagers πŸ“Ÿ are (still) alive and kicking

January 1, 2020

Wow. Two posts in less then a week! I’m on a roll! Don’t get used to it though. I’ve only waited ountil the first day of the decade so nobody could say I didn’t post anything this decade. .

When someone talks about pagers, most people imagine old devices that were used before cell phones were a thing. They can be used to transmit numbers or short messages, mostly to tell someone to call a specific phone number.

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I really hate anonymous calls πŸ™‰

October 28, 2018

Here’s what I did about it.

Working at a VoIP provider comes with some great advantages. One of these is Mobile on PBX. This basically means I can route the calls from and to my mobile phone through my own PBX of choice. This works with a host at the provider we call a ‘mobreg’. This is the host that pretends to be a phone, and registers on my PBX.

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