Using Redis with Kamailio
Latest Posts
FreeSWITCH as an IMS Application Server
Using FreeSWITCH as an IMS Application Server
Ubuntu Cloned VMs getting Duplicate IPs (and yes – the MAC Addresses are unique)
Short mystery regarding cloned Ubuntu VMs with different MAC Addresses being allocated the same IP Addresses by DHCP.
ITU International Point Code Structure
A brief look at International Signaling Point Code numbering and what it all means.
Demystifying SS7 & Sigtran – Part 4 – Routing with Point Codes
Getting from Point Code A to Point Code Z.
Demystifying SS7 & Sigtran – Part 3 – SS7 Lab in GNS3
Setting up our GNS3 environment with a bunch of SS7 Nodes
Demystifying SS7 & Sigtran (With Labs!) – Part 2 – Ingredients Needed
Looking at the basic components that make up our SS7 Networks.
Demystifying SS7 & Sigtran Networks (With Labs!) – Part 1 – Intro
Taking a look at the basics of the SS7 Protocol Stack.
Huawei Baseband Cheat Sheet
Quick reference guide for the types and capacities of Huawei BBU 3900 Series cards
Lifecycle of a Dedicated Bearer – From Flow-Description AVP to Traffic Flow Templates
A look at how Dedicated Bearers get established for VoLTE.
Handling multiple SIP headers with the same name in Kamailio
Some tricks to handle if you’ve got multiple headers all with the same name in Kamailio
Wireguard in Mikrotik RouterOS
Quick intro to setting up Wireguard interfaces in Mirktok’s RouterOS.
Originating calls in FreeSWITCH
Starting calls from FreeSWITCH
Some thoughts on NRF Security in 5G Core
A look at attack vectors the NRF opens up in #5G Core networks, and the mitigations recommended by 3GPP.
If you like Pina Coladas, and service the control plane – Intro to NRF in 5GC
Looking for Love in the 5G Core?
Let’s look at our matchmaker – The Network Repository Function in 5G Core.
The Surprisingly Complicated World of SMS: Special Characters
A look at how characters are encoded in an SMS.
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
GTP Extension Headers (PDU session user plane protocol) in 5GC
How GTP is extended in 5G Core Networks to support extra QoS functionality like Reflective QoS and Delay Indicators
The Surprisingly Complicated World of SMS: Concatenated / Multipart SMS
Another deep dive into deceptively simple seeming functions to do with SMS.
Random Posts
LNP / Porting FAQ
Kamailio Bytes – Transaction Module
List of Open Source Evolved Packet Core (EPC) Implementations
Stateless, Stateful, Dialog Stateful and Transaction Stateful SIP Proxies
LTE (4G) – Authenticating the Network
Diameter Routing Agents (DRA)
Subscribed-Periodic-RAU-TAU-Timer
MTU in LTE & 5G Transmission Networks – Part 1
End of ISDN in Australia