Meta: 5G on this Blog
Nick No talk of Augmented Reality, Holographic Video calls, 5G cities. Just info about real 5G topics for nerds.
2020
SIP Hold – With RFC6337
How SIP hold using RFC6336 is implemented and how it looks in production.
LTE EPC: Packet Gateway (P-GW) Basic Function
The Packet Gateway's purpose in the EPC.
LTE EPC: Serving Gateway (S-GW) Basic Function
Basic processes and functions of the LTE EPC Serving Gateway (S-GW).
FreeSWITCH WebRTC with sipML5
Using FreeSWITCH to serve WebSocket / WebRTC connections
Docker Cheatsheet
Cheat sheets for common Docker Commands
Kamailio Bytes – Gotchas with Kamailio as an Asterisk Load Balancer
Things to keep in mind before using Kamailio as a Load Balancer for Asterisk
mkcert – Simple Localhost Certs
Using Mkcert to generate valid SSL certificates on your local machine for development
Open5GS EPC: Static IP Addresses for UEs / APNs / Subscribers
Assigning static IPs to UEs in Open5GS
CUPS – Control and User Plane Separation in LTE & NR with PFCP (Sx & N4)
A look at PFCP for the Sx and N4 Interfaces
Kamailio World 2020
Kamailio world was an online event this year, but you can find all the videos here now they’ve all been posted.
Twenty years of the Nokia 3310
1 September 2000 was when the 3310 was released...
AS/CA S009:2020 Key Changes for Cablers
Key changes in Australia's AS/CA S009:2020 (Installation requirements for customer cabling (Wiring Rules))
Wireshark Filtering S1AP to find Subscriber Signaling
Using Wireshark to filter S1 messaging to find signalling from a specific subscriber,
List of Open Source Evolved Packet Core (EPC) Implementations
List of Open Source Evolved Packet Core implementations
Android Carrier Privileges
Unlocking Carrier Privileges through certificate on a UICC
Getting TEID up with GTP Tunnels
What's the deal with Tunnel Endpoint Identifiers and what do they do?
GSM with Osmocom: Handovers
A look at the Handover process between Cells / BTSs in GSM using the Osmocom stack.
Diameter Dispatches: S6a Authentication Information Request / Answer
This is part of a series of posts focusing on common Diameter request pairs, looking at what’s inside and what they do. The Authentication Information Request (AIR) and Authentication Information…
GSM with Osmocom: Channel Types
When setting up the timeslots on the TRX for each BTS on your BSC, you’ll notice you have to set a channel type. So what do these acronyms mean, and…