Getting started with CGrateS to bill for calls in a Telecom environment.
A look at taking SS7 traffic and putting it onto IP / SIGTRAN links on the MTP2 / Layer 2 level.
Quirks and gotchas of working with SMS on IMS on iPhones.
Build instructions for YaTE
Kamailio Bytes – Working with Redis
Using Redis with Kamailio
Using FreeSWITCH as an IMS Application Server
Getting from Point Code A to Point Code Z.
Setting up our GNS3 environment with a bunch of SS7 Nodes
Looking at the basic components that make up our SS7 Networks.
Taking a look at the basics of the SS7 Protocol Stack.
Some tricks to handle if you’ve got multiple headers all with the same name in Kamailio
Originating calls in FreeSWITCH
Starting calls from FreeSWITCH
Using the Rtimer module and UAC to be annoying, or very useful.
A glimpse into the complexities of prepaid billing (Online Charging) Diameter based networks.
Using mod_httpapi to HTTP POST call recordings to a remote server
ENUM in Practice with Kamailio
Using ENUM to resolve E.164 numbers into SIP URIs using Kamailio.
A Bind environment in a Docker container for experimenting and learning ENUM for DNS based Call Routing.
Using DNS to resolve E.164 phone numbers to routable SIP URIs
IMS Routing with iFCs
Peer behind the magic curtain at how IMS networks route your VoLTE and VoNR calls, and how iFC (Initial Filter Criteria) achieve this.
Adding support for AMR Codec in FreeSWITCH