Book Image

WebRTC Integrator's Guide

By : Altanai Bisht
Book Image

WebRTC Integrator's Guide

By: Altanai Bisht

Overview of this book

Related Content you might be interested in

Current Title:

Small book image
WebRTC Integrator's Guide
Altanai Bisht
Oct, 2014 | 382 pages
No titles found
Table of Contents (17 chapters)
WebRTC Integrator's Guide
WebRTC Integrator's Guide
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Running WebRTC with and without SIP
Running WebRTC with and without SIP
JavaScript Session Establishment Protocol (JSEP)
Running WebRTC without SIP
WebRTC through WebSocket signaling servers
Running WebRTC with SIP
Summary
2
Making a Standalone WebRTC Communication Client
Making a Standalone WebRTC Communication Client
Description of the WebRTC client-server model
SIP servers
Limitations of the existing setup
Summary
3
WebRTC with SIP and IMS
WebRTC with SIP and IMS
The Interaction with core IMS nodes
The IP Multimedia Subsystem core
The Telecom server
The Media Server
WebRTC over firewalls and proxies
The final architecture for the WebRTC-to-IMS integration
Summary
4
WebRTC Integration with Intelligent Network
WebRTC Integration with Intelligent Network
From mobiles to WebRTC client through GPRS
From mobiles to WebRTC client through GSM
Call processed with the IN service logic
The WebRTC client's SIP messages to SMS in a GSM phone (SMSC)
Summary
5
WebRTC Integration with PSTN
WebRTC Integration with PSTN
What is PSTN?
WebRTC connectivity to the PSTN
The challenges in connecting the WebRTC world to the PSTN landscape
The service logic
Summary
6
Basic Features of WebRTC over SIP
Basic Features of WebRTC over SIP
SIP services
Services in the Application Server
Media Server-based features
Features of a web application
The admin console
Summary
7
WebRTC with Industry Standard Frameworks
WebRTC with Industry Standard Frameworks
The Multitier architecture
The design of a WebRTC client
The environment setup
Testing
Summary
8
WebRTC and Rich Communication Services
WebRTC and Rich Communication Services
Rich Communication Services
The RCS ecosystem and WebRTC
Telecom operator's benefit derived from RCS
Voice over LTE
Summary
9
Native SIP Application and Interaction with WebRTC Clients
Native SIP Application and Interaction with WebRTC Clients
Support for WebRTC in various operating systems
Summary
10
Other WebRTC Use Cases
Other WebRTC Use Cases
Unified Communicator
Customized Communicator for specific enterprise segments
The Customer Relationship Management system
Network Operation Center
The human resource management tool
Social networking – targeting consumers
Retail services
Health care
Financial services
Remote management
WebRTC games
TV experience with WebRTC
Interfacing services
Summary
Index
Index

The challenges in connecting the WebRTC world to the PSTN landscape

There are many big/small problems that arise or may arise when interconnecting the different networks of WebSocket, SIP, and PSTN. The most basic aspects of address mapping and protocol conversion from SIP to ISUP are mentioned here. Other challenges, such as policy control, billing, charging, and so on, are left to the reader to implement as they wish.

Address mapping

The PSTN scenario is much different from VoIP, as in the PSTN, the user ID is in the numeric form, while in VoIP networks, the username is followed by @domain name. To resolve the intermapping between both the worlds, DNS and Enum servers are used; this setup is depicted in the following diagram:

Translation from SIP to ISUP

This section describes the various ISUP call status responses and requests. It also describes the translated SIP messages. We need to have a basic understanding of ISUP messages before proceeding further. As the first call setup request is...

Previous Section
End of Section 4
Next Section