VoIP Advantages / Disadvantages

VoIP Advantages

• You can make calls to any place where there is availability if the internet.
• Cost saving on per minute call and savings on a PBX for large companies.
• VoIP hardware is not prohibitive and can use the already existing LAN, WAN and internet connections.
• It works with regular and cordless telephone, fax machines and with PC’s. Wireless and mobile phones are trying to incorporate VoIP in their features.
• Codecs compress the analog signals such that it can be sent quicker using less bandwidth.
• It has the ability to collaborate with many people simultaneously on projects. You could use any application with facilities like phone and email and file transfers to send and receive revisions and collaborate with co workers as though these clients were seated right in front of you
• Flexibility and portability of voip allows you to program your VoIP number into a converter that acts as a bridge between your internet connection and regular phone.
• The telephone number is assigned to the convertor and not the land line and so you can take your convertor any place and plug it into a broad band connection and receive and send calls.
• You could use some of the features in IP like instant messaging.

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Disadvantages of VoIP

• You require some form of IP service to make a phone call
• If VoIP is adopted and the network goes down then No computer. No phone.
• Also it is the same case if power goes down; you do not have any means of making emergency calls as in PSTN; where the supply for the telephone is from the central office.
• Delay time, Echo are major issues in quality of transmission where at time you have to wait for a few seconds to hear the other person calling.
• As for the issue of transmission quality it deteriorates during periods of high network congestion and limited bandwidth. It is in this eventuality that digital packets are often dropped, making call quality poor and lost connections.
• VoIP applications and services require simultaneous data transfer in real time. TCP/IP is not well suited for this purpose.
• Security, all the same risks as can be found with any IP Technology

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