Originating calls in FreeSWITCH
Nick Starting calls from FreeSWITCH
VoIP
Kamailio Bytes – Using Rtimer to run Jobs
Using the Rtimer module and UAC to be annoying, or very useful.
Basics of EPC/LTE Online Charging (OCS)
A glimpse into the complexities of prepaid billing (Online Charging) Diameter based networks.
HTTP PUT call recordings from FreeSWITCH
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.
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
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
Adding support for AMR Codec in FreeSWITCH
A very unstable Diameter Routing Agent (DRA) with Kamailio
I’d been trying for some time to get Kamailio acting as a Diameter Routing Agent with mixed success, and eventually got it working, after a few changes to the codebase…
VoIP is an only child – ‘Gotchas’ on running VoIP applications inside Containers
It’s 2021, and everyone loves Containers; Docker & Kubernetes are changing how software is developed, deployed and scaled. And yet so much of the Telco world still uses bare metal…
Using Docker to develop SIP solutions with Kamailio
Using Docker to spin up environments to test Kamailio in
Kamailio Bytes – OnReply Route
So far with most of our discussions about Kamailio we’ve talked about routing the initial SIP request (INVITE, REGISTER, SUBSCRIBE, etc), but SIP is not a one-message protocol, there’s a…
I like big Butts and I cannot lie.
The buttinski test phones I know and love.
SIP Hold – With RFC6337
How SIP hold using RFC6336 is implemented and how it looks in production.
FreeSWITCH WebRTC with sipML5
Using FreeSWITCH to serve WebSocket / WebRTC connections
Kamailio Bytes – Gotchas with Kamailio as an Asterisk Load Balancer
Things to keep in mind before using Kamailio as a Load Balancer for Asterisk
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.
FreeSWITCH + ESL = Programmable Voice
An overview of FreeSWITCH's ESL
Kamailio Bytes – UAC – Authenticate Outbound Calls
Using UAC module to authenticate outbound calls where you need to respond to a 401 Unauthorised Response, or a 407 Proxy Authentication required