Voip - uma nova maneira de se comunicar.

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VOIP & IP Telephony
A new way to communicate

• Julio Gomes
• Jésus Caetano

Concept
What is VoIP?


VoIP (Voice over Internet Protocol), or simply Voice over IP, is a
communicationtechnology not much widespread that allow us
to make and receive calls using the internet.



Basically consists in digitalize the voice in data packets for
traffic under IP networks, and convertback in voice again in its
destination.

VoIP
What I need?


Stable Internet Connection – Upload and download equivalentes



Well structured network



Computer/Portable, Smartfone,Cellphone (SIP)



Softphone



Analogic Telephone Adaptor - ATA



Gateway VoIP



IPBX



Asterisk Server



VoIP Account

Features
 Peer to Peer Communication
Voip allows that extensions, located remotelly, can communicate as if the person
were in the next room.

Matriz /SP

Filial / Manaus

100

10
20

Cloud

101

30

102

FeaturesRemote Communication
It’s possible, through mobile equipments, be a remote extensions in
environments with internet connection, having all facilities than a
commom extension.

Matriz /SPAmbiente Wi-fi

10
WAN

20

30

CLOUD

Celular Wi-fi
Protocolo SIP

VoIP

If VoIP is so good, why mine never works or it’s terrible when
I can talk????

VoIP - Troubles
 I can’t makecalls!
Possible causes



No Internet Connection or insufficient badnwidht.
Instable Internet Connection



Problems with VoIP Provider



VoIP - Troubles



Voice/Call Cutting

Problems with VoIP Provider



High Latency – Packets response time higher than 150ms



Higher time of transmission between packets- Jitter



Packets loses higher than 3% Features

 Voip techonlogy implemented a lot of features like:


Calls on Hold
You can give a call and put others on hold, including the possibility of information
about the queue position...
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