SIM / Smart Card Deep Dive – Part 1 – Introduction to Smart Cards
Nick Getting up close and personal with Smart Card / SIM Cards
2020
I like big Butts and I cannot lie.
The buttinski test phones I know and love.
Cell Broadcast in LTE
A look at how Cell Broadcast is signalling implemented between the MME and CBC in an LTE/EPC network.
My 2021 Telco Reading List for the Holidays
My holiday reading list for 2020.
Huawei BTS 3900 LMPT Basic Config
This post is one in a series documenting my adventures attempting to configure a used BTS 3900 to function as a eNB in my lab. There are 5 network ports…
Huawei BTS3900 – MML Basics
Learning Huawei's flavour of MML - Man Machine Language for the BTS 3900 series Macro Base Stations.
Connecting to a Huawei BTS3900
Meta: This post is a series chronicling my adventures with a second hand Huawei BTS3900 I purchased. You can find an index of these posts here. So you purchased a…
SIMtrace Cases
I put together some laser cut case designs for the Osmocom SIMtrace, Quite happy with the results. If you want to cut your own, I’ve sent the DXF files to…
DIY LTE RAN Adventure – POWER! (systems)
All the gear I’ve got so far for my DIY RAN Project requires -48vDC to power it up. Back to online auction websites and preso I’ve ended up with an…
5G Subscriber Identifiers – SUCI & SUPI
Acronyms and cryptography - a look at Subscriber Identifiers in 5G
DIY RAN Adventures – Antennas
Picking and validating antenna selection for the new RAN project in my lab.
SIM Unlock Shims
What do Unlock SIMs sold online actually do and how do they do it?
GSM with Osmocom: OsmoSGSN for Packet Data
Configuring the Osmocom Serving Gateway Support Node (SGSN) for 2G/3G networks.
My first 5G Core: Open5Gs and UERANSIM
Note: As this space develops so quickly I’ve refreshed the original post from November 2021 in March 2021 with updated instructions. While 5G SA devices are still in their early…
Using a NanoVNA to analyse SDR Base Station Antennas
Using a NanoVNA to analyse antenna performance for SDR driven Base Stations for GSM / LTE.
Open5GS – NRF Setup
Configuring the NRF for Open5GS
5GC: The Network Function Repository Function
A look at the Network Function Repository Function (NRF) in 5G Core
My used Huawei BTS3900 LTE RAN Adventure – The Impulse Purchase
How I ended up with a Macro LTE eNodeB (Huawei BBU3900) and getting it running.
5GC for EPC Folks – Control Plane Signalling
Comparing the Control Plane signalling in 5GC compared to EPC.
5GC for EPC Folks – User Plane Traffic
How User Plane traffic is handled in 5GC compared to EPC