We live, eat and sleep mobile core technology here at Working Group Two. What did a mobile core look like in the past and how is it developing? We threw three quick questions at Stephane Savonitto, a Core Network Engineer at Working Group Two. He has significant mobile core experience, from large network operators and equipment manufacturers.
Blog - Page 2
Hello abundance, bye-bye complexity: With this new public API you can plug multiple switchboards into the call path - without knowing what a call path is
We love making telecom easier and scalable. This week we’ve released SIP Breakout, a new public API from Working Group Two. It simplifies the process of deploying SIP-enabled services, such as a PBX.
What we're building on the platform right now: 5GSA, 5GNSA, OCS, content filtering, VoNR, VoLTE on sXGP, VoLTE roaming, support for PBX from Telavox... and more
Our global mobile core platform is rapidly evolving. Here's what the team is building right now.
The business case for not needing a business case
You’ve heard these terms a million times: Managed services and software-as-a-service. At first glance, they appear deceptively similar. You wonder, how are they different again? Understanding the difference between them unlocks a perspective on where the telecom industry is heading.
Building a product ecosystem: Here's a question mobile operators need to hear more often.
“Can I book you for a two-hour meeting so we can start sketching out your customer's journey?” This is not a question that a telco operator normally hears. But it was exactly this question that we asked the Head of Product at Nortel - a mobile operator targeting small and medium-sized businesses in Norway.
Vxt is on a mission to eradicate boring tasks. Now they’re joining Working Group Two’s product marketplace.
Vxt, a technology communications company in New Zealand, will be adding their voicemail product to Working Group Two’s marketplace. Their aim is to increase visibility and distribution with mobile operators on Working Group Two’s platform.
Voxist to join the Working Group Two marketplace
Voxist - a smart and personalized voicemail product for mobile - will be joining Working Group Two’s marketplace. This means that mobile operators on the Working Group Two platform will soon be able to make Voxist available to their subscribers.
We are releasing our first production-ready gRPC APIs!
At wgtwo we have been offering public APIs for a long time using major version zero.
They have been great for playing around with and we have learned a lot about what we actually need. So now its time to step up our game.
We are releasing our first production ready gRPC APIs!
How I leveraged the 80/20 principle to rebuild wgtwo.com
For a company that provides an innovative solution across the telecommunication sector, I believe it is essential to have a web presence that effectively communicates our vision. This blog post illustrates my approach to taking the content of our existing website and transforming it into a completely new online presence, what it is today. This is the story of leveraging the Pareto 80/20 Principle to effectively portray wgtwo as the innovative telco brand it is.
Manual on Me: Matt Long
As I was waking up this morning, I started surfing Reddit. One post, in particular, jumped out at me. In this post, the writer (OP in Reddit parlance) had been asked to take a personality test at work by a new supervisor. The OP was asking if this was something they should agree to do.
The responses varied. Some were mildly positive, but most were very cynical since this sort of testing can be misused by bad management. However, this got me thinking and, eventually, writing this post.
Don't leave a message after the beep
Think quickly: When was the last time you dialed into your voicemail to listen to a message someone had left for you? Chances are, it’s been a while. The common view is that voicemail isn’t popular any longer. That’s both true and not true, depending on how you look at it. Find out where voicemail - loved by some and hated by others - is heading.
The specs behind the specs part 1
"Abstract Syntax Notation One (ASN.1) is a standard interface description language for defining data structures that can be serialized and deserialized in a cross-platform way." - Wikipedia
Zero-day vulnerabilities - Log4j
On Friday, December 10th, wgtwo and many others became aware of a critical severity zero-day exploit, CVE-2021-44228, known as “Log4Shell” in the Log4j library, which is widely used in numerous systems around the internet. We immediately opened a security incident and have been actively taking steps to mitigate and monitor the situation.
CKH IOD selects Working Group Two for public cloud core network

- As an industry-first, CKH IOD migrates its core network to the cloud – delivered as a fully managed software-as-a-service by Working Group Two and deployed on AWS
- A cloud-based core network brings radical simplification, cost efficiency and a platform to leverage a developer community – to drive innovation and capitalize on disruptive technologies
Mitsui Knowledge Industry (MKI) to develop private networks business

— Drive the Private NWs Growth with its Fully-Managed Mobile Core NW SaaS —
CEO Erlend Prestgard of Working Group Two As, Oslo, Norway and President Kengo Asano of Mitsui Knowledge Industry Co., Ltd. Minato-ku, Japan, agreed on an MoU on providing WG2’s fully-managed Mobile Core NW SaaS product to accelerate the Private Networks business in the Japanese market.
Kafka timers
A timer is a cornerstone of any software that communicates over the network. There are plenty of implementations that provide a timer facility. Most of them are in memory and will lose scheduled timers should the application crash. In this blog we discuss durable Kafka timers that do not depend on in memory state. By design we shall assume 1 second resolution of these timers.
Changing the color of your bulbs: The fancy way
last hackathon i did setup a mqtt integration towards wgtwo's apis to enable call notifications via my ikea trådfri bulb so i can finally notice my wife calling me. the bulb changes color when my phone is ringing and when I am in a call, without me needing to install anything to my phone.
Forbidden lore: hacking DNS routing for k8s
At WG2 we’re coming close to having everything running in Kubernetes, which means that almost everything we deploy needs to be pulled from a registry. We have run our own local registry for some time now, to host both locally-built images and cached images from Docker Hub.