Thursday, March 19, 2009

Advantages and Disadvantages of VoIP phone

VoIP phones are becoming more and more popular and widely used. But what is the Advantages and Disadvantages of VoIP phone?

Advantages of VoIP phone

1. Low cost. You can make calls at very low prices. Using VoIP phone can reduce communication and infrastructure costs. As VoIP phone calls over existing data network (WiFi or Internet), so there is no need to separate voice and data network.

2. Flexibility. You can make call anywhere. VoIP phone calls can facilitate tasks over the same broadband connection and is location independent - only an Internet connection is needed to connect to the service provider.

Disadvantages of VoIP phone

1. Quality of service. As VoIP calls are made over IP network, it may cause packet loss and delay, so the quality is not so good, but many improvements have already made, and it's quite clear now.

2. Susceptibiliey to power failure. IP Phones and VoIP telephone adapters connect to routers or cable modems which typically depend on the availability of mains electricity or locally generated power. But some service providers use customer premise equipment (e.g., cable modems) with battery-backed power supplies to assure uninterrupted service for up to several hours in case of local power failures.

3. Emergency calls. The nature of IP makes it difficult to locate network users geographically. Emergency calls, therefore, cannot easily be routed to a nearby call center.

4. Number portability. A fixed line can easily achieve number portability by maintaining a database of numbers. But it's not so easy for VoIP phones.


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