VoIP is a technology that is used to connect the wires and systems in computer networks for performing as another choice to phone lines. It delivers actual timing of voice to telephones. Instead of PSTN (Public Switched Telephone Network), VoIP allows making long distance toll free fax and voice calls with an existing Internet Protocol data networks.
Solutions of VoIP technology:
There are many VoIP solutions offered nowadays. From the available VoIP solutions, any one solution can be selected according to the voice quality level, available networking level, size of business and amount of legacy equipment combination.
- IP gateways,
- IP based PBX,
- PC based telephony and
- VoIP server cards.
Requirements of bandwidth in VoIP technology:
- VoIP technology is completely worked with the use of bandwidth connections.
- G.723 (10:1) and G.729 (8:1) are voice compression standards that are used for minimizing the bandwidth for voice requirements.
- G.723 needs 5.3 kbps only and it offers high compression rate.
- A VAD (Voice Activation Detection) is an important feature used to free the call bandwidth which is not in use. It is used to decrease the data traffic.
- By the help of VAD, the bandwidth is only used during speaking. So it saves upto 60% of silent call.
Applications of VoIP technology:
- Off – Net Calling.
- Office to Office Communication.
- Expensive tie lines are replaced.
- Off – Premise extensions are created.
Advantages of VoIP technology:
- Installation is easy,
- Requires low risk,
- Very easy to operate.
Disadvantage of VoIP technology:
- Only limited emergency calls are allowed to call.
- Requires electric power for operation.
- Sometimes it creates problems in voice quality and reliability.
VoIP technology is generally used in all offices for making long distance voice calls with real time voice quality at low charges. Overall, VoIP technology will be the best source for long distance communication.