Note: This isn’t just another course that explains what RBM is — it’s a technical breakdown of how RCS Business Messaging (RBM) really works: from protocol-level details, HTTP-based file transfer, and chatbot communication paths, to the GSMA-aligned architecture that powers enterprise-grade messaging across networks.
· What are the core differences between standard RCS and RBM when it comes to secure file transfers and business messaging?
· How is end-to-end security implemented in RBM, and how does it compare to other messaging protocols?
Note: This isn’t just another course that explains what RBM is — it’s a technical breakdown of how RCS Business Messaging (RBM) really works: from protocol-level details, HTTP-based file transfer, and chatbot communication paths, to the GSMA-aligned architecture that powers enterprise-grade messaging across networks.
· What are the core differences between standard RCS and RBM when it comes to secure file transfers and business messaging?
· How is end-to-end security implemented in RBM, and how does it compare to other messaging protocols?
· What exactly happens behind the scenes when a chatbot interacts with a user using P2A and A2P flows?
Understanding how RCS, RBM, HTTP file transfer, and chatbots interact within today’s telecom infrastructure is essential for anyone working in business messaging. This course explains how each component fits into the system — how data moves between layers, how protocols are coordinated, and why every detail matters in a production-grade RBM environment.
You'll gain not just theoretical understanding, but practical insight into RBM architecture, security, file handling, chatbot integration, and more — all based on real-world industry standards and message routing models.
The most important topics you’ll learn in this course:
RBM Architecture – Core components and message routing in RCS Business Messaging
RCS Chatbots Integration – Communication workflows and session management in RBM
MaaP (Messaging as a Platform) – Functionality and real use cases in RBM ecosystem
A2P & P2A Messaging in RBM – Flows between business applications and end users
if you have any questions along the way, just ask — I offer 24/7 support so you can stay on track and get the clarity you need.
Here we are just Previewing the other two of my courses on RCS and relate it to this RBM course. If some students who might not have taken my other courses at least should know the background information.
In this slide we are setting up our Learning Objectives and how the information will flow through different sections of this course.
Test your general understanding of RCS concepts and how they are important for implementing RBM.
In this lecture, we talk about the features and functions which Businesses/ Brands would like to see in the RBM Ecosystem that will be attractive for them to use it for their customers.
Lets describe a typical User story when they call a Customer Service Phone number. What type of interaction can take place between the Business and the customer that will give more Customer Satisfaction and also increaser the Business Revenue.
Lets check your understanding of RBM Business requirements.
Businesses want End to End Security and Privacy when their systems are talking to their customers. Here we discuss how RCS based Messaging System provides that to the brands.
Test your understanding of end-to-end security in RBM
Since HTTP is the main protocol that we shall be using when it comes to transfer of contents using RCS Framework. Next few slides we want to build a good understanding of why HTTP is Chosen protocol and what are its main functions that are attractive for RBM.
Here we talk a high-level Call Flow that takes place between the sender RCS client and the Receiver RCS Client and how they interact with the Content Server that is part of the RCS Framework.
Lets briefly touch upon the different versions of HTTP protocol as they evolved over time and how it brought more functionality in Content Transfer. We shall refer to the related RFCs that will be helpful for students if they need deeper dive when dissecting their projects.
HTTP as foundation for File Transfers
Before Ending this Section on RBM Background Information, lets at least see what types of files are supported for transfer in RCS Framework and what are not Supported. That will be useful when we start talking about so many content transfers as move to next section of this course.
This is a quick refresher of FT Architecture by going over the Architecture Diagram give n GSMA Document.
test your understanding on what happens on a Sender side of the File Transfer
Here we look at a typical SIP IMS REGISTRATION Message and focus mainly related to RCS and File Transfer operation.
SUBSCRIBE/NOTIFY are the main messages that get exchanged to do Capability Checks. Here we want to go over the NOTIFY message but focus and discuss FT related parameters.
Test your understanding of important parameters related to FT during Registration and Capability Exchange
When we setup a Chat session to transfer the file related Meta Data to the recipient, there are a number of FT related parameters that are included in INVITE message. Lets discuss those here in this lecture.
Lets have a quick overview of what happens on the Recipient side to download the file contents from the Content Server.
Check understanding on what happens on the receiver side for FT
To get a better feel of what happens on Recipient side for the file, we want to go over some sample HTTP request and responses that take place between the RCS client and the Content Server.
Look at the Structure of File Transfer contents
Here we are talking about the overall Architecture that makes RCS based Business Messaging Possible.
In this lecture, we are trying to explain the role played by the IMS Data Channel Server that makes multimedia contents flow between Chatbots and the end user.
Chatbot Architecture and Ecosystem
Depending upon what type of interaction is taking place between Chatbot and the end user, it will take different types of sessions to be created. We discuss those in this lecture.
Here we discuss the P2A Call Flow Path and discuss how it can follow path of a session based communications or Asynchronous messaging.
Here we get into overall Call Flow when a Chatbot is trying to send some contents to the user.
Here we go through all the steps through which the call flow messages follow to setup A2P communication and we look at the structure of each message.
Test your knowledge on what you have learnt when discussing how various communication paths are setup for A2P and P2A exchanges
Here we want to give sample messages how the Searchbot message looks like in the call flows.
Message Structures and Examples in RBM
In this slide we are just giving the Summary of what we learnt in this course and what are the key takeaways for RCS Business Messaging.
Here we shall try to test your understanding of A2P and P2A call flows.
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