Titel: “The Kubernetes Book”

Edition: 2022

Author: Nigel Polton

Link: Nigel Polton Website

Many people who tried to learn more about Kubernetes or Docker have heard the name Nigel Polton. He is one of the old guys or captains in this domain and prepared many Kubernetes and docker training videos, and tutorials besides the books.

Capturing telecom protocols or traffic for various purposes is a topic that has been discussed for a long time and always has been done with different tools or through some vendors.

One of the tools that help to capture protocols, especially SIP, is Homer. This project provides valuable tools to capture and monitor your VoIP network and use it for troubleshooting or analytics purposes.

RTPEngine is one of the best options among open-source solutions for RTP or media handling and it besides other platforms like Kamailio will give you many features or ready-to-go solutions.

When you are handling media sessions in IMS or any VoIP network, you should have a solution for recording, media barging or let’s say Lowful Interception (LI). LI in IMS has a long story and it is out of scope; for this post, we focus on call recording.

If you are working in the telecom field, I think it is rare that you don’t work with Wireshark to capture the network or open the tcpdump outputs. Although, as a developer, you need to use the reference packet captures, to see the correct packet flow and structure for a specific protocol while you are implementing (if you couldn’t find a reference pcap, you will be walking in the darkness!)

RTPEngine as you can find in the project GitHub too, is a proxy server for RTP and other UDP-based media traffic, and it is used with projects like Kamailio or OpenSIPS as a SIP proxy server. So, the SIP proxy handles SIP signaling, and RTPEngine takes care of the RTP/Media plane.