Open5GS without NAT
Nick Setting up Open5Gs without a NAT requirement, and the routing required to do so.
June 2021
ENUM in Practice with Kamailio
Using ENUM to resolve E.164 numbers into SIP URIs using Kamailio.
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.
PS Data Off
How turning mobile data off, doesn't, in LTE and 5G.
Remember Bash History Forever
A few .bashrc tweaks to improve the 'history' command
The Anti-Digit Dialing League
The strange history and triumphs of a group formed to protest the removal of letters from the dialing plan.
Docker & BIND as an ENUM Playground
A Bind environment in a Docker container for experimenting and learning ENUM for DNS based Call Routing.
ENUM – DNS based Call Routing
Using DNS to resolve E.164 phone numbers to routable SIP URIs