1. Why need IP telephony? Economic (uses internet, IP routers...) Basic packages run around 10-15$ and don’t include national long distance calling Traditional phone service includes a host of taxes,regulatory fees,and other service charges that can easily add significant money to your bill. Further savings. Because underlying network infrastructure can be shared. a single set of equipment, wiring, network connection enough. Not only voice but also video is transmitted using similar concepts. World’s new trend and spreads at a fast pace. Independent. Much larger selection of service providers to provide voice and video communication services.

2. No geographical restriction! You do not need to update your location! You do not need to change your provider in abroad! Backward Compatibility : IP Telephony must be backward compatible with existing PSTN. VoIP is not monolithic – many applications, with different drivers, will maintain a heterogeneous mix of technologies Security and quality is adaptive for users and situations. Integration with Cloud or any internet services !!

3. Why need IP telephony? Source: Telegeography 2012

4. Why need IP telephony? Source: Telegeography 2012

5. VOIP PHONES HARD PHONESOFT PHONE Session Initiation Protocol (SIP) Internet Engineering Task Force (IETF) Skype uses proprietary protocols Google Talk leverages the Extensible Messaging and Presence Protocol (XMPP). Some softphones also support the Inter- Asterisk eXchange protocol (IAX) Uses internet protocol (TCP/IP) and requires RJ-45 Ethernet port to connects to the network. Plug & play compatible

6. Hard Phones Basic Intermediate Advanced Basic VoIP hard phones look like a traditional desk phone. It makes and receives telephone calls over the VoIP network (on- net) or the PSTN (off- net) VoIP phone has a large screen and many more hard buttons This phone can often do Web browsing and access the company phone directory. Advanced models usually include color video displays and multiple telephony-related applications. This phone is allow you to make teleconference calls.

7. VoIP Application in the Business Small Scale Companies Medium Scale Companies Large Scale Companies IP PBX operator up to 20-30 concurrent users is enough Free call and text messages Reporting Visual analysis Giant IP PBX operator up to 100-200 concurrent users Free call and text messages Recording audio calls Teleconference Visual analysis and user execution Cloud and internet services integrity Greetings,information and broadcast messages from operator(that could also take input from the user)

8. Application Areas

9. VoIP Application in the Business Small Scale Companies Medium Scale Companies Large Scale Companies Call center,inbound call center,auto dialer Voice message services Call from web Using robot operator that smart software queues users Profilize users and access regions Autoresponse and information message feedback