Build your own VoIP System

This blog post is the first part of a series of posts, which describe how VoIP works and how the Sipwise sip:provider Platform enables you to start various VoIP business models.

Part 1, which is provided in this post, gives you an introduction in how VoIP works.

Part 2 shows how you can set up a secure and self-hosted Skype-like VoIP system for free using the sip:provider Platform within 30 minutes.

Part 3 is dedicated to the sip:provider Platform acting as an SBC in front of existing VoIP systems.

Part 4 describes how you can operate a whole-sale business with the sip:provider Platform.

Part 5 shows how to enable Over-The-Top (OTT) services using Apple and Google Push Notification Services.

Introduction

VoIP Systems are seen as complex communication infrastructures even from a high level perspective, but they’re not. Well, VoIP is in fact complex in its details, but it has been abstracted by various projects in order to make it really straight-forward to use it, so it’s easy to start a compelling voice/video communication system or service (which I’ll name “VoIP system” or “VoIP service” throughout the document) from scratch, but it’s important to learn a few facts about it in order to choose the right base system for successfully running a VoIP service.

The Basics

VoIP just means “Voice over IP”, which is a generic term for transporting real-time voice sessions over the Internet. However, it doesn’t define HOW this is done, and even the term “Voice” is a bit misleading, because with the very same concept, you can transport also Video and Fax over an IP connection.

There are a couple of elements involved when you’re talking about a VoIP system:

To sum it up, there are SIP Endpoints, which are the client instances of your customers. These could be software installed on your customer’s computers (popular software is Jitsi, an open source and cross-platform communications client, or Bria, a commercial multi-platform client for Windows, iOS and Android). Other possibilities are SIP phones like SNOM phones or Polycom Phones.

Read more: Sip:wise

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