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 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

Categories
EPC LTE Mobile Networks

Evolved Packet Core – Analysis Challenge

This post is one of a series of packet capture analysis challenges designed to test your ability to understand what is going on in a network from packet captures.Download the Packet Capture and see how many of the questions you can answer from the attached packet capture. The answers are at the bottom of this […]

Categories
5G SA EPC LTE Mobile Networks SDM

Backing up and Restoring Open5GS

How to backup and restore Open5Gs config between servers

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

How UEs get Time in LTE

How does “Network Time” actually get to the UE?

Categories
5G SA EPC EUTRAN GSM LTE Mobile Networks RFCs & Standards

Pre-5G Network Slicing

5G introduces Network Slicing, or does it? A look at slicing mechanisms widely used in pre-5G networks.

Categories
5G SA EPC LTE Mobile Networks SDM Software

Open5Gs Database Schema Change

New database time to support slicing and a migration path for existing users.

Categories
5G SA EPC LTE Mobile Networks

MTU in LTE & 5G Transmission Networks – Part 1

A look at MTU and its role in LTE and 5G Transmission.

Categories
EPC LTE Mobile Networks

LTE EPC: Packet Gateway (P-GW) Basic Function

The Packet Gateway’s purpose in the EPC.

Categories
EPC LTE Mobile Networks

LTE EPC: Serving Gateway (S-GW) Basic Function

Basic processes and functions of the LTE EPC Serving Gateway (S-GW).

Categories
EPC LTE Mobile Networks

Open5GS EPC: Static IP Addresses for UEs / APNs / Subscribers

Assigning static IPs to UEs in Open5GS