Atlantis Land A02-RAV260-W54 ユーザーズマニュアル

ページ / 121
                                                                                                                               
VoIPMaster 260W  
 
106 
What is VoIP? 
Question 
Answer 
What is VoIP? 
 
The past: More than 30 years ago Internet didn't exist. 
Interactive communications were only made by 
telephone at PSTN line cost. Data exchange was 
expansive (for a long distance) and no one had been 
thinking to video interactions (there was only television 
that is not interactive, as known). 
Yesterday: Few years ago we saw appearing some 
interesting things: PCs to large masses, new 
technologies to communicate like cellular phones and 
finally the great net: Internet; people begun to 
communicate with new services like email, chat, etc. and 
business reborned with the web allowing people buy 
with a "click". 
Today: Today we can see a real revolution in 
communication world: everybody begins to use PCs and 
Internet for job and free time to communicate each 
other, to exchange data (like images, sounds, 
documents) and, sometimes, to talk each other using 
applications like Netmeeting or Internet Phone. 
Particularly starts to diffusing a common idea that could 
be the future and that can allow real-time vocal 
communication: VoIP. 
The future: We cannot know what is the future, but we 
can try to image it with many computers, Internet almost 
everywhere at high speed and people talking (audio and 
video) in a real time fashion. We only need to know what 
will be the means to do this: UMTS, 
VoIP (with video extension) or other? Anyway we can 
notice that Internet has grown very much in the last 
years, it is free (at least as international means) and 
could be the right communication media for future.