Categories
EPC IMS / VoLTE LTE Mobile Networks RFCs & Standards SDM

Getting to know the PCRF for traffic Policy, Rules & Rating

A look at the PCRF in EPC Networks, and the Charging Rules that lay at the heart of it all.

Categories
EPC IMS / VoLTE Mobile Networks Python SDM Software

Diameter Routing Agents – Part 5 – AVP Transformations with FreeDiameter and Python in rt_pyform

Using FreeDiameter, Python and our newly released “rt_pyform” module to rewrite AVPs in your FreeDiameter based Diameter Routing Agent.

Categories
EPC EUTRAN LTE Mobile Networks RFCs & Standards Software

NB-IoT NIDD Basics

An overview of the who, how and why of Non-IP Data Deliver in NB-IoT cellular services.

Categories
EPC IMS / VoLTE LTE Mobile Networks RFCs & Standards SDM Software

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

Categories
EPC IMS / VoLTE LTE Mobile Networks SDM Software

Diameter Routing Agents – Part 4 – Advanced FreeDiameter DRA Routing

Looking at overriding the default Diameter routing logic in FreeDiameter with rt_default

Categories
EPC IMS / VoLTE LTE Mobile Networks SDM Software

Diameter Routing Agents – Part 3 – Building a DRA with FreeDiameter

Using FreeDiameter as a DRA

Categories
EPC IMS / VoLTE LTE Mobile Networks RFCs & Standards SDM

Diameter Routing Agents (Why you need them, and how to build them) – Part 2 – Routing

Diving back into the world of Diameter Routing Agents with a look at the logic that defines how a DRA routes traffic from one place to another.

Categories
EPC IMS / VoLTE LTE Mobile Networks RFCs & Standards SDM

Diameter Routing Agents (Why you need them, and how to build them) – Part 1

An introduction to Diameter Routing Agents, covering what is a DRA is and why you need them in your life / network.

Categories
5G SA EPC IMS / VoLTE LTE Mobile Networks VoIP

Filtering for 3GPP DNS in Wireshark

Filtering for 3gppnetwork.org domains in Wireshark to make your troubleshooting easier

Categories
EPC IMS / VoLTE Mobile Networks SDM

FreeDiameter – Generating Certificates

Using OpenSSL to generate self-signed certs for use in FreeDiameter

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CGrateS EPC IMS / VoLTE Mobile Networks Software VoIP

CGrates in Baby Steps – Part 1

Getting started with CGrateS to bill for calls in a Telecom environment.

Categories
EPC LTE Mobile Networks

Evolved Packet Core – Analysis Challenge

Step right up folks and test your skills on EPC with this PCAP analysis challllleeennnggeee!

Categories
EPC EUTRAN IMS / VoLTE LTE Mobile Networks

Lifecycle of a Dedicated Bearer – From Flow-Description AVP to Traffic Flow Templates

A look at how Dedicated Bearers get established for VoLTE.

Categories
5G SA EPC LTE Mobile Networks SDM

Backing up and Restoring Open5GS

How to backup and restore Open5Gs config between servers

Categories
EPC Mobile Networks SDM

Jaffa Cakes explain the nuances between Centralized vs Decentralized Online Charging in 3GPP Networks

A look at Centralized vs DeCentralized Online Charging with the aid of sugar.

Categories
EPC LTE Mobile Networks RFCs & Standards SDM VoIP

Basics of EPC/LTE Online Charging (OCS)

A glimpse into the complexities of prepaid billing (Online Charging) Diameter based networks.

Categories
5G SA EPC Linux LTE Mobile Networks

Open5GS without NAT

Setting up Open5Gs without a NAT requirement, and the routing required to do so.

Categories
EPC LTE Mobile Networks RFCs & Standards SDM

Diameter – Insert Subscriber Data Request / Response

A look at how the HSS can update the profile of an already in-use subscription using Insert Subscriber Data Request/Response.

Categories
EPC LTE Mobile Networks SDM SIM Cards

PS Data Off

How turning mobile data off, doesn’t, in LTE and 5G.

Categories
EPC Mobile Networks RFCs & Standards VoIP

Docker & BIND as an ENUM Playground

A Bind environment in a Docker container for experimenting and learning ENUM for DNS based Call Routing.