10 Best VOIP Advantages and Disadvantages

Voice Over Internet Protocol abbreviated as VOIP is a technology by which voice messages can be communicated over Internet Protocol (IP) networks like the Internet. It works like a phone service using the internet rather than the traditional telephone service. VOIP offers lesser rates as compared to many phone companies. A good quality internet broadband connection would be a prerequisite for this service to run smoothly. Now, let us see some of the advantages and disadvantages of VOIP.


Advantages of VOIP

There are few benefits available about Voice Over Internet Protocol. Let’s see what they are all..,

Easy to install and maintain

VOIP phones are easier to install than the normal ones. There is not much technical knowledge needed for this. There are no extra wires or cables required. The installation involves setting up an IP phone without even installing the software.

Lower cost

VOIP service can be used at a very low cost. If you have an internet connection, you can almost consider using VOIP as free. All you have to pay is the internet charges as VOIP involves no extra charge for hardware, wires, cables etc.

Portable number

A VOIP number, generally known as virtual number, is completely portable. The same number can be used wherever you go. This is especially useful for people who travel frequently. Even if the address is changed they can be reached in the VOIP number.

Lower taxes

If you take a look at your telephone bill, you can see that you pay a lot of money as tax. But the government has not imposed heavy taxes on VOIP phone services. Thus, choosing VOIP over the traditional phone service is a great money saver.

Many features available

The VOIP phone service is nothing less than the traditional service. It supports a number of features like conference calls, call divert, call hold etc. Even in today’s world there are instances where you need the facility of fax. VOIP provides a feature called virtual faxing for this purpose. The email account linked with the VOIP system can be used to send and receive fax messages.

Disadvantages of VOIP

Every product has its own demerits. So VOIP also has it. They are,

Less reliable

The quality of the VOIP service largely depends on the internet connection. If the traffic on the network is high, the voice quality drops. This is commonly seen in long distance or international calls where the voice appears distorted. This may lead to a problem, mainly for business calls where communication needs to be quick and action must be taken on the basis of the response.

Affected by power cuts

Unlike normal phones, the VOIP phone service requires regular power supply. Calls are not possible if there is an interruption in the power supply. While the normal phones get current through the telephone line, VOIP phone needs a generator in case there is no power. So a permanent backup should be there in place.

Cannot trace emergency calls

In normal phones, emergency calls can be correctly traced. They get diverted to the nearest call centre where the exact location can be identified. VOIP communication is between two IP addresses which can be located anywhere in the world. So it is impossible to find the origin of the call.


Internet services have always faced the issue of security. Same is the case with VOIP also. Telephone hacking has been a major concern in this regard. Due to the less time given for scanning data packets, the performance of firewalls may be less than satisfactory. VOIP is also affected by worms and virus. All these pose a threat to the security.

Processor issues

The quality of the VOIP calls depends upon the specifications of the PC being used. The processor is allocated to different processes sequentially in multi programming. So when you want to execute a program while you are using the phone, the quality of the call tends to decrease. Such issues are always present while working with a computer with less processor speed.