![Page 1: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/1.jpg)
OPEN SOURCE TELEPHONY SYSTEMS
![Page 2: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/2.jpg)
BASIC CONCEPTS...
- Session Initiation Protocol (SIP)
- Voice over Internet Protocol (VoIP)
- Virtual PBX
- Softphones
Diagram Credits: Cisco.com
![Page 3: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/3.jpg)
REPRESENTATIVE TECHNOLOGIES...
1. ASTERISK: Open Source Software for Custom Communications
Diagram Credits: Alta3Research
![Page 4: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/4.jpg)
REPRESENTATIVE TECHNOLOGIES...
Diagram Credits: Alta3Research
… Upgrading From Legacy Phone System
![Page 5: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/5.jpg)
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.”
![Page 6: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/6.jpg)
REPRESENTATIVE TECHNOLOGIES...
3. KAMAILIO: Open Source SIP Server
![Page 7: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/7.jpg)
Bo Kaap – Cape Town SA
The Village Telco Project
![Page 8: OPEN SOURCE TELEPHONY SYSTEMS. BASIC CONCEPTS... -Session Initiation Protocol (SIP) -Voice over Internet Protocol (VoIP) -Virtual PBX -Softphones Diagram](https://reader036.vdocuments.mx/reader036/viewer/2022062717/56649e4f5503460f94b45af8/html5/thumbnails/8.jpg)
Wireless ProjectSupervisor: Professor Michael Adeyeye
VM1 VM2
Ubuntu ServerLAMP Server
CentOs ServerElastix
AsteriskNow
Mesh Potato
Mesh Potato
HTML 5 PHP Script
SIP Server PSTN