Alberto Aguilar Class

1. VoIP

2. How VoIP / Internet Voice
Works
 VoIP services convert your voice into a digital signal
that travels over the Internet
 VoIP can allow you to make a call directly from a
computer, a special VoIP phone, or a traditional phone
connected to a special adapter.

3. What Are Some Advantages
of VoIP?
 Some VoIP services offer features and services that
are not available with a traditional phone, or are
available but only for an additional fee. You may also
be able to avoid paying for both a broadband
connection and a traditional telephone line.

4. What Are Some
disadvantages of VoIP?
 If you're considering replacing your traditional telephone
service with VoIP, there are some possible differences:
 Some VoIP services don't work during power outages and
the service provider may not offer backup power.
 Not all VoIP services connect directly to emergency services
through 9-1-1. For additional information, see VoIP & 911
Advisory.
 VoIP providers may or may not offer directory
assistance/white page listings.

5. History
 1964 Paul Baran, "On distributed Communications
Networks," IEEE Transactions on Systems (March 1964)
(described as "first paper on secure packetized voice)
 1972 Dr. Vint Cerf was the man who invented Transmission
Control Protocol / Internet Protocol (TCP/IP) – the technical
protocol that defines the form of net data packets and how
they travel to their destinations.
 1995 by a small company in Israel called Vocaltec, Inc. Their
product, InternetPhone, allowed one user to call another
user via their computers, a microphone and a set of
speakers. Additionally, this application/product only worked if
both the caller and the receiver had the same software
setup.

6. Examples

7. VoIP Future VoLTE
 Voice over LTE is the future. VoLTE shares many of the
same benefits that VoIP does, but instead of relying on
the hardware at the ends of the call (your
smartphone), VoLTE offloads the heavy lifting to the
network. Doing so lets VoLTE calls be described as
VoIP HD. Calls are crisp and clear, and reportedly
sound amazing. Not only that, VoLTE includes the
ability to cancel echos and background noise on the
back end, not the handset itself.