CGrateS – Actions & Action Plans
Getting to know what we can do with Actions and ActionPlans inside CGrateS.
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Playing back AMR streams from Packet Captures
Exporting AMR streams to listen to the audio from a PCAP
Diameter Routing Agents – Part 5 – AVP Transformations
A look at why we’d want to apply translations to Diameter AVPs inside a Diameter Routing Agent
CGrateS in Baby Steps – Part 2 – Adding Rates and Destinations through the API
CGRates in Baby Steps – Part 2 – Introduction to the CGrates API
Scratch’n’Sniff – An easy tool for remote Packet Captures
A new tool I’ve written to stream packets from one machine to another for analysis in real time.
USSD Gateway with Osmocom
Unstructured Supplementary Service Data or “USSD” is the stack used in Cellular Networks to offer interactive text based menus and systems to Subscribers. If you remember topping up your mobile phone credit via a text menu on your flip phone, there’s a good chance that was USSD*. For a period, USSD Services provided Sporting Scores, … Continue reading USSD Gateway with Osmocom
Originating calls in FreeSWITCH
Starting calls from FreeSWITCH
Forsk Atoll – Importing Antennas
Importing .msi antennas radiation patterns into Atoll
Backing up and Restoring Open5GS
How to backup and restore Open5Gs config between servers
HTTP PUT call recordings from FreeSWITCH
Using mod_httpapi to HTTP POST call recordings to a remote server
Open5Gs Database Schema Change
New database time to support slicing and a migration path for existing users.
PyHSS Update – YAML Config Files
Introducing YAML based config files for defining how PyHSS should be setup
PyHSS Update – SCTP Support
Info on PyHSS new support for SCTP as well as TCP.
SIM / Smart Card Deep Dive – Part 4 – Interacting with Cards IRL
Sending commands/APDUs to a real life Smart Card.
Dr StrangeEncoding or: How I learned to stop worrying and love ASN.1
Australia is a strange country; As a kid I was scared of dogs, and in response, our family got a dog. This year started off with adventures working with ASN.1 encoded data, and after a week of banging my head against the table, I was scared of ASN.1 encoding. But now I love dogs, and … Continue reading Dr StrangeEncoding or: How I learned to stop worrying and love ASN.1
FreeSWITCH + ESL = Programmable Voice
An overview of FreeSWITCH’s ESL
srsLTE Install for BladeRF & LimeSDR on Debian / Ubuntu
Note: I’m running version 19.12.0 which I installed from the repos due to issues with 20.4.0 (latest when I wrote this) and stability on LimeSDR. I wrote the other day about installing SRS LTE stack, But installing it is one thing, meeting all the requirements to use it with your SDR hardware turns out to … Continue reading srsLTE Install for BladeRF & LimeSDR on Debian / Ubuntu
GSM with Osmocom Part 7: The HLR – Home Location Register (and Friends)
What the Home Location Register (HLR) does in GSM, how to set it up and configure subscribers.
GTPv2 – F-TEID Interface Types
A quick look at the Interface Types in the F-TIED field in GTPv2
Kamailio Bytes – KEMI Intro
Using KEMI to write routing logic using languages like Python, Ruby, Lua and JS