SIP Supported & Require
Nick Function of Supported & Require headers in SIP.
2019
Kamailio Bytes – Configuring Diameter Peers with CDP
Introducing C Diameter Peer module in Kamailio to manage Diameter Peers, monitor their state and handle the connections.
Kamailio Bytes – Dispatcher States
AP, IX, IP & DX - The meaning of Dispatcher states in Kamailio's Dispatcher module.
Kamailio Bytes – Rewriting SIP Headers (Caller ID Example)
Stateless Kamailio SIP proxy example for changing Caller ID values
1938 ATE PAX50 Step By Step Exchange
At 82 years old and weighing in at 140Kg, this is how telephone switching used to be done...
Reverse Engineering Samsung Sysdump Utils to Unlock IMS Debug & TCPdump on Samsung Phones
Reverse Engineering the Samsung Sysdump app to unlock IMS Debug and TCPdump functions
VoLTE/IMS Debugging on Samsung Handsets using Sysdump & Samsung IMS Logger
Unlocking the built in IMS Debugging tool in Samsung's Sysdump Utility
NBNCo Transit Demystified
A look into how NBN's transit model works.
PLMN Identifier Calculation (MCC & MNC to PLMN)
How to encode and decode MCC and MNC as PLMN Identifiers
PyHSS Update – MongoDB Backend & SQN Resync
Feature Update on PyHSS the Python Home Subscriber Server
Querying Auth Credentials from USIM/SIM cards
Using osmo-sim-auth to query USIM/SIM cards authentication mechanism.
HSS & USIM Authentication in LTE/NR (4G & 5G)
Exploring the how and why of Authentication in LTE & NR networks.
Making use of Australian Elevation Data in Forsk Atoll
Importing Elevation data from ELVIS into Forsk Atoll
Why GTP for Mobile Networks?
Why and How GTP is used in LTE networks to carry user data.
Under the Hood with NBN FTTC Hardware (DPUs)
Taking a look at the black (and white) boxes inhabiting pits in NBN FTTC neighborhoods.
Roll your own USIMs for Private LTE Networks
Adventures in getting USIMs to use on private LTE networks.
Call routing in LNP
How call routing including Donor Routing works in LNP.
LNP / Porting FAQ
Technical FAQs on Number Porting in Australia
Anatomy of Local Number Portability in Australia
What goes on in the background with Local Number Porting in Australia
LTE / EUTRAN – Idle Detach
Overview of the packet flow for a UE Idle detach from the network.