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5G SA Mobile Networks RFCs & Standards

Meta: 5G on this Blog

No talk of Augmented Reality, Holographic Video calls, 5G cities. Just info about real 5G topics for nerds.

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Voice over IP

SIP Hold – With RFC6337

How SIP hold using RFC6336 is implemented and how it looks in production.

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
RFCs & Standards Voice over IP

FreeSWITCH WebRTC with sipML5

Using FreeSWITCH to serve WebSocket / WebRTC connections

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Linux Software

Docker Cheatsheet

Cheat sheets for common Docker Commands

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Asterisk Kamailio Voice over IP

Kamailio Bytes – Gotchas with Kamailio as an Asterisk Load Balancer

Things to keep in mind before using Kamailio as a Load Balancer for Asterisk

Categories
Linux Security

mkcert – Simple Localhost Certs

Using Mkcert to generate valid SSL certificates on your local machine for development

Categories
EPC LTE Mobile Networks

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

Assigning static IPs to UEs in Open5GS

Categories
5G SA EPC LTE Mobile Networks

CUPS – Control and User Plane Separation in LTE & NR with PFCP (Sx & N4)

A look at PFCP for the Sx and N4 Interfaces

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Kamailio Voice over IP

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.

Categories
GSM Mobile Networks

Twenty years of the Nokia 3310

1 September 2000 was when the 3310 was released…

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Australian Telco

AS/CA S009:2020 Key Changes for Cablers

Key changes in Australia’s AS/CA S009:2020 (Installation requirements for customer cabling
(Wiring Rules))

Categories
EPC Mobile Networks

Wireshark Filtering S1AP to find Subscriber Signaling

Using Wireshark to filter S1 messaging to find signalling from a specific subscriber,

Categories
EPC LTE Mobile Networks Software

List of Open Source Evolved Packet Core (EPC) Implementations

List of Open Source Evolved Packet Core implementations

Categories
GSM LTE Mobile Networks Software

Android Carrier Privileges

Unlocking Carrier Privileges through certificate on a UICC

Categories
EPC GSM LTE Mobile Networks Uncategorized

Getting TIED up with GTP Tunnels

What’s the deal with Tunnel Endpoint Identifiers and what do they do?

Categories
GSM Mobile Networks RF

GSM with Osmocom: Handovers

A look at the Handover process between Cells / BTSs in GSM using the Osmocom stack.

Categories
EPC LTE

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 Answer (AIA) are one of the first steps in authenticating a subscriber, and a very common Diameter transaction. The Process The Authentication Information Request (AIR) […]

Categories
GSM Mobile Networks RF

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 how do they affect the performance of the network? GSM channels break down into one of to categories, control channels – used for signalling, and […]