2. There
are two fundamental technologies
that are necessary for the existence of
VoIP. The first, and most widely used, is
the telephone. The second technology is
the Internet.
3. Voice
over Internet Protocol (VoIP)
technology lets you use the Internet to
make and receive telephone calls.
4. To
transport voice over a data network, the
human voice must be “packetized.”
This process contrasts significantly with
the circuit-switching mechanism used in
traditional networks. Voice packetization
involves appending headers with routing
information to the voice data. Multiple
voice samples are combined into a packet
and the voice packet is
5. switched
hop-by-hop through the network.
To summarize, the voice signal is broken
up into small pieces (packets) and sent
though the network one-by-one. The
process of packetization compresses the
callers voice signal, transfers it over the IP
network, and it is then decompressed at
the other end.
6. VoIP
is available in a wide range of
services. Some basic, free VoIP services
require all parties to be at their computers
to make or receive calls. Others let you call
from a traditional telephone handset or
even a cell phone to any other phone.
7. VoIP and unified communications enable you to:
Reduce travel and training costs, thanks to web
and video conferencing
2. Easily grow your phone system as needed
3. Have one phone number ring simultaneously on
multiple devices, helping employees stay
connected to each other and to customers
4. Reduce your phone charges
5. Have a single network for voice and data,
simplifying management and reducing costs
6. Access your phone system's features at home or
at client offices, in airports and hotels—anywhere
you've got a broadband connection
1.
