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VoIP for development Authors: Alberto Escudero-Pascual, Louise Berthilson (cc) Creative Commons  Attribute Non-Commercial Share-Alike 2.5 Based on: VoIP-4D Primer Building voice infrastructure in developing regions Unit  16
Objective ,[object Object],[object Object],[object Object],[object Object]
Motivation ,[object Object],[object Object],[object Object],[object Object],[object Object]
VoIP guide for development ,[object Object],[object Object],[object Object],[object Object],[object Object]
VoIP guide for development (2) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Table of contents ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Evidence of VoIP explosion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Convergence
The magic potion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Our magic potion ,[object Object],[object Object],[object Object]
A typical question ,[object Object]
The short answer ,[object Object],[object Object],[object Object],[object Object]
The recipe in detail (Contents) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is a  PBX? ,[object Object],[object Object],[object Object],[object Object],[object Object]
PBX advantages ,[object Object],[object Object],[object Object],[object Object],[object Object]
What is  Asterisk? ,[object Object],[object Object]
What is  Asterisk? ,[object Object],[object Object],[object Object]
PSTN  ,[object Object],[object Object],[object Object],[object Object]
PSTN vs. Internet ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Signalling in traditional telephony ,[object Object],[object Object],[object Object],[object Object]
Signalling in  PSTN  ,[object Object],[object Object],[object Object],[object Object]
Foreign Exchange Office (FXO) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Foreign Exchange Station (FXS) ,[object Object],[object Object],[object Object],[object Object]
Do not forget... ,[object Object],[object Object],[object Object]
FXO, FXS in a PBX ,[object Object],[object Object],[object Object]
FXO and FXS ,[object Object]
FXO and FXS ,[object Object]
FXO and FXS ,[object Object]
Analogue signalling ,[object Object],[object Object],[object Object],[object Object]
Analogue signalling (2) ,[object Object],[object Object],[object Object]
Analogue signalling (3) ,[object Object],[object Object],[object Object],[object Object]
Signalling in IP telephony ,[object Object],[object Object]
Signalling in IP telephony ,[object Object],[object Object],[object Object],[object Object]
SIP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SIP and mobility ,[object Object],[object Object],[object Object],[object Object]
SIP proxy servers
Phone calls and NATs ,[object Object],[object Object],[object Object]
RTP y NAT ,[object Object],[object Object],[object Object],[object Object]
RTP and NAT(2) ,[object Object],[object Object],[object Object],[object Object],[object Object]
IAX2 ,[object Object],[object Object],[object Object],[object Object]
Why is  IAX2 better than SIP? ,[object Object],[object Object],[object Object]
VoIP Equipment ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PBX ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
PBX
VoIP telephone ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VoIP telephone ,[object Object],[object Object],[object Object],[object Object],[object Object]
VoIP Telephones (WiFi) ,[object Object],[object Object],[object Object],[object Object]
Softphones ,[object Object],[object Object],[object Object],[object Object],[object Object]
Softphones ,[object Object],[object Object],[object Object]
Softphones ,[object Object],[object Object],[object Object],[object Object],[object Object]
Analogue Telephone Adaptor  (ATA) ,[object Object],[object Object],[object Object],[object Object],[object Object]
ATA ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
ATA ,[object Object],[object Object],[object Object]
ATA ,[object Object],[object Object],[object Object]
PSTN interface cards ,[object Object],[object Object],[object Object],[object Object]
PSTN Interface  ,[object Object],[object Object],[object Object],[object Object]
Other aspects Quality of Service ,[object Object],[object Object],[object Object],[object Object]
Codecs ,[object Object],[object Object],[object Object],[object Object]
Codecs ,[object Object],[object Object],[object Object],[object Object],[object Object]
Codecs ,[object Object],[object Object],[object Object]
Jitter ,[object Object],[object Object],[object Object]
Latency (delay) ,[object Object],[object Object]
Latency  ,[object Object],[object Object]
VoIP implementation challenges ,[object Object],[object Object],[object Object],[object Object]
VoIP implementation challenges ,[object Object],[object Object],[object Object],[object Object]
Recommendations ,[object Object],[object Object],[object Object],[object Object]
Recommendations ,[object Object],[object Object]
PART 2 – Hands on
The components ,[object Object],[object Object],[object Object],[object Object]
You can build a portable PBX  ,[object Object]
First steps:   Installing Asterisk ,[object Object],[object Object],[object Object]
Configuration files ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Communication channels
Communication channels (2) ,[object Object],[object Object]
Communication channels (3) ,[object Object]
Define extensions rules (create your  dial plan) ,[object Object],[object Object]
Define extension rules (create your  dial plan) ,[object Object],[object Object]
Asterisk follows the old telephony operator's logic  ,[object Object],[object Object],[object Object],[object Object]
PARTE 3 – Case study
[object Object],[object Object],[object Object],[object Object]
Kafanchan, Nigeria ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Kafanchan, Nigeria
Network Backbone
Sectors in service
Network topology
Inclusion of VoIP in the NOC
Wireless hub equipment
Client equipment +  VoIP ATA
Conclusions ,[object Object],[object Object],[object Object]
[object Object]

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Wimax and VoIP Presentation

Editor's Notes

  1. NOTAS AL FORMADOR Esta unidad require que el formador lea en detalle la guia de VoIP4D. La presentación tiene tres objetivos fundamentales (1) entender los conceptos básicos de una infrastructura VoIP y el significado de covergencia entre la red telefónica tradicional y la IP (2) presentar las ventajas de FOSS como plataforma para el desarrollo de este tipo de infraestructura (3) introducir algunos retos concretos que aparecen en el desarrollo de este tipo de tecnología en regiones en desarrollo. Finalmente, la presentación incluye un ejemplo de implementación que debe ser necesario localizado al gusto del formador. Por su caracter técnico el formador debe tener experiencia real implementando VoIP. Esta presentación no cubre la segunda parte de la guía, la parte práctica de configuración de escenarios. Sólo se incluyen 4-5 diapositivas donde se introducen dos conceptos básicos en Asterisk (canal y plan de marcado). El formador debe introducir la lógica de Asterisk en la presentación y discutir las configuraciones y comandos durante una posible sesion práctica. Esta presentación necesita de 60 minutos, en caso de una audiencia poco avanzada se pueden suprimir las diapositivas 53-58. Es importante dedicarle tiempo a las diapositivas 59-60 porque resumen todos los conceptos aprendidos. Las diapositivas 3,4 y 5 introducen la guía y la motivación de los autores al crearla, el nuevo formador las pueden eliminar y sustituir por su motivación particular. Al final de esta presentación la audiencia debe recordar: porque existe convergencia, cual son las ventajas de FOSS e Internet respecto a la telefonía tradicional (mobilidad, flexibilidad, etc), cuales son las diferencias fundamentales entre SIP y IAX2, cual es el tipo de equipamiento que se va a necesitar, que es un ATA, VoIP Phone, PSTN/RTB interface, que existe algo que se llama Asterisk :-) y su logica de funcionamiento... Por último se debe aclarar que para empezar a aprender solo se necesita 3 PCs y que todo se puede hacer por software.