open source telephony systems. basic concepts... -session initiation protocol (sip) -voice over...

OPEN SOURCE TELEPHONY SYSTEMS

BASIC CONCEPTS...

- Session Initiation Protocol (SIP)

- Voice over Internet Protocol (VoIP)

- Virtual PBX

- Softphones

Diagram Credits: Cisco.com

REPRESENTATIVE TECHNOLOGIES...

1. ASTERISK: Open Source Software for Custom Communications

Diagram Credits: Alta3Research

REPRESENTATIVE TECHNOLOGIES...

Diagram Credits: Alta3Research

… Upgrading From Legacy Phone System

REPRESENTATIVE TECHNOLOGIES...

Open Source Software for Custom Communications 2. ELASTIX / FreePBX “Designing a good phone system that provides a rich environment for the end users means obtaining a solid understanding of tightly integrating the phones into the PBX strategy.”

REPRESENTATIVE TECHNOLOGIES...

3. KAMAILIO: Open Source SIP Server

Bo Kaap – Cape Town SA

The Village Telco Project

Wireless ProjectSupervisor: Professor Michael Adeyeye

VM1 VM2

Ubuntu ServerLAMP Server

CentOs ServerElastix

AsteriskNow

Mesh Potato

Mesh Potato

HTML 5 PHP Script

SIP Server PSTN