Voice-over-Internet Protocol (VoIP)

1. www.oeclib.in
Submitted By:
Odisha Electronic Control Library
Seminar
On
Voice-Over-Internet-Protocol
(VoIP)

2.  What is VOIP?
 Why use VOIP?
 When can I consider VOIP?
 PSTN vs. INTERNET
 How VoIP works
 VOIP Architecture
 Components
 Advantages
 Disadvantages
 VOIP Alternatives
 Future
 Reference

3. Routing of voice conversations over the Internet or
through any other IP-based network.

4.  Cheaper telecommunications
 Less phone line rental
 Less wiring required
 “Free” phone calls in some situations
 Video conferencing possibilities
 Branch offices may not need a PABX
 Use Wifi bridges to connect phone system

5.  When moving to a new building
 When STD calls and International calls costs need
to be reduced
 When line rental fees need review
 When new EFTPOS, fax, modems need to be added
 If call count per month is high

6. PSTN INTERNET
 Voice network use circuit
switching.
 Dedicated path between
calling and called party.
 Bandwidth reserved in
advance.
 Cost is based on distance
and time.
 Data network use packet
switching.
 No dedicated path
between sender and
receiver.
 t acquires and releases
bandwidth, as it needed.
 Cost is not based on
distance and time.

9.  VoIP Protocols
 VoIP Gateway
 VoIP Codecs

10.  Most good quality VOIP software is either cheap or free.
 Free or cheap local/international call rates compared to
traditional phone calls.
 VOIP is integrated with features such as chat, whiteboard,
audio and video-conferencing.
 Can be used with VOIP adapters, allowing your normal
home phone to be turned into a VOIP phone.
 VOIP phone adapters can be carried around with you
wherever you travel.
 Computers do not have to be turned on, you can receive
VOIP calls on your existing phone.

11.  Quality of calls across Internet is not assured
 Broadband equivalent connection needed for
connecting offsite
 Network switches may need replacement
 Power on Ethernet may need to be established over
the LAN
 Phone availability is dependant on network
hardware and power
 Some VOIP providers have fees
 Emergency calls 000 do not issue an origin

12.  Call cap plans with Telecommunications provider
 Virtual fax lines that get sent to email
 ISDN D channel for EFTPOS
 Advanced forms of Instant messaging
 Use mobile phones and reduce land lines
 Least cost routing with various carrier prefixes

13.  Mobile phone that can do Wifi VOIP if in range
 VOIP using Wimax (no phone lines required)
 Internet / VOIP / Video on demand broadband
 ISP’s working like carriers with Quality of Service
for VOIP on their network
 Wireless phones with Skype built in (2006 Q3)

14.  www.google.com
 www.wikipedia.com

15. Thanks