| In the early years of 21st century, the VoIP | | | | professionals as well. It keeps the employees or |
| phone service has brought in a revolution of all | | | | users connected with the business or others, |
| sorts in the communication industry. The | | | | even when the employee or the user is on the |
| advanced IP telephony services deliver unified | | | | road or at home. |
| communication over the internet. The media-rich | | | | Some other task that such a phone service can |
| collaborative applications wherein voice, video, data | | | | facilitate over the traditional PSTN phone services |
| and images are sent simultaneously have unified | | | | are: |
| communications to a significant extent. As a | | | | 1. The VoIP phones are location friendly that can |
| natural corollary, the voice over IP service has | | | | be operated from anywhere, as only internet |
| gained in popularity among various business | | | | connection is required to connect with others. |
| entities. | | | | 2. Incoming phone calls are automatically routed |
| The small and medium sized enterprises as well as | | | | over internet, regardless of where the users are |
| individual users are considering the IP telephony | | | | located at specific points in time. Therefore, |
| solutions for their day-to-day communications. As | | | | frequent travels or others can enjoy calling at |
| a matter of fact, it can be said that they are | | | | cheaper rates, even when they are on a trip. |
| moving ahead on the footsteps of the large | | | | 3. The users can enjoy unlimited long distance and |
| business or corporate houses. The business | | | | international calls with VoIP phone services at |
| entities are opting for the VoIP services to | | | | relatively lower rates. As a matter of fact, one |
| improve their internal operations while, the | | | | can save up to half the cost of PSTN monthly |
| individual users are happy with the significant | | | | bills. |
| reductions in the phone bills. | | | | 4. Unlike PSTN services, the VoIP phones can be |
| The advanced VoIP phone services allow the | | | | used to avail new and value added services that |
| users to enjoy long distance and international calls | | | | are available over the internet such as video |
| at significantly lower rates. This is possible due to | | | | conversation; messaging or data file exchange in |
| the internet that allows the unified communication | | | | parallel with the conversation, audio conferencing |
| over the packet switching technique. | | | | and passing of information. |
| The best part of VoIP phone service is that the | | | | VoIP services follow the IP process, wherein |
| subscribers can use the pre-existing fixed line | | | | voice calls or images are routed over a broadband |
| phones as well as mobiles. | | | | speed internet. As a matter of fact, there are |
| As of now, the situation is such that the VoIP | | | | three ways of transmitting the calls namely - IP |
| service is on the edge of replacing traditional | | | | phones, PC to PC communication and Analog |
| PSTN system to a large extent, if not fully. The | | | | Telephone Adaptor or ATAs. The users could opt |
| internet VoIP phone service provide ease and | | | | for anyone to facilitate unified communication |
| convenience of talking over the internet. As a | | | | over the diverse destinations and without much |
| matter of fact, such services are turning to be | | | | trouble. |
| appropriate for frequent travelers and busy | | | | |