How To Pick Suitable IP Phones And Providers For Your Enterprise

May 20th, 2012

IP phones have grown to be extremely indispensable equipment for small business operations. With the introduction of VoIP technology, making as well as receiving calls via the internet has become additions to day to day operations and also management practices. But, it is essential to take into account other facets of VoIP technology and not just the IP phones you’re using. There are various companies of IP phone services that appear to provide great offers for your small business, but keep in mind that not all them can deliver as promised.

Picking out VoIP phones as well as services isn’t just about choosing the very first provider you run into. What you should bear in mind is that you are using these VoIP phones and services for your enterprise, so you must make a conscious effort to choose the best. You can begin by reviewing various VoIP service providers as well as figure out which ones are a lot more likely to offer the services that you need.

Ensure that before you go shopping for small business VoIP services that you already are aware of what you need for your company and exactly how you can go about choosing the most effective calling plans. Take some time studying your phone bill and determine the services that you require just before searching for a small business VoIP services provider. Check your use on long distance calls, local telephone calls, and also international calls to ensure that you pick out the very best VoIP plans and packages and to make best use of your investment. It would not do great to sign up with the very first VoIP provider you see only to realize that the plan they have supplied you does not meet up with your needs.

Besides this, check the quality of the VoIP services you want to acquire. There are many review sites that you could go to if you wish to do this. Here you will find feedback and testimonials from other small business proprietors about the quality of the service they are receiving from their providers. After that you can begin making a listing of several of them that you can contact.

Lastly, be sure that you look into the costs of the VoIP services you would like to utilize. Several providers give different types of calling plans and of course, the costs could differ from a single one to the other. Make sure that there aren’t any hidden charges to the amount that you will be required to pay so you can get the most out of your investment and also the services given to you.


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Wireless Surround Sound Enhances Your Home Theater Experience

May 19th, 2012

Lately a great number of wireless surround sound kits have appeared such as latest-generation wireless headphones, iPods, cell phones and wireless amplifier devices that claim to cut the cord. I will examine whether or not these products keep their claim to provide perfect-quality audio. Furthermore, I will examine the underlying technologies.

These devices fall into 2 categories. The first type of products already has wireless built in. Second-category products, including a number of streaming audio devices, have optional wireless ability. Normally they have a slot to add a wireless LAN card. Newest generation iPods and mobile phones already come with built-in WiFi and Bluetooth support.

Bluetooth is fairly widespread as a low-cost wireless option. However, Bluetooth does have some limitations. These weaknesses are often overlooked but will have an effect on high-quality audio applications.

1) Inadequate range

The range of Bluetooth devices is generally only 30 ft. This excludes Bluetooth from multi-room applications.

2) Limited data transmission capacity

Bluetooth reliably supports data transmission rates of around 1 Mbps only which is not sufficient for uncompressed CD-quality audio. As a result Bluetooth applies audio compression. The audio will be degraded to some extent as a consequence of the audio compression. For this reason higher-end audio equipment normally does not use Bluetooth wireless audio.

3) Audio latency

The signal sent via Bluetooth will undergo a slight delay of no less than 10 ms. This is for the most part because of the audio compression. While being uncritical for MP3 players, this delay may be a problem for video and other real-time applications.

4) No support of multiple headphones

Bluetooth cannot stream to multiple headphones at the same time. This may be a problem in cases where several people like to listen to the same Bluetooth transmitter.

WiFi is an additional commonly used wireless protocol that is also suitable for audio streaming. WiFi does support uncompressed audio but will have problems transmitting to a large number of wireless receivers at the same time. As a result of the fairly high power consumption it is hardly ever used in wireless headphones however. WiFi is suitable for streaming audio from a PC however because almost all PCs have WiFi access.

Home wireless speaker devices and wireless amplifiers typically employ proprietary protocols. These protocols are specifically designed for real-time audio applications. On the other hand, entry-level wireless speakers and headphones still utilize FM transmission. FM transmission suffers from fairly high audio degradation and noise / static.

More advanced wireless protocols are based on digital formats which eliminate audio degradation and incorporate sophisticated features like error correction to cope with interference from competing wireless devices.

Newest-generation wireless amplifiers permit streaming to an unlimited number of receivers and support uncompressed audio transmission.

The audio latency of these wireless amplifiers is usually between 1 ms and 20 ms. A small-latency amplifier is critical for home theater audio. This assures that all speakers will be in sync. These wireless audio transmitters normally work at 2.4 GHz. There are also some products including Amphony’s line of wireless audio products which operate at 5.8 GHz. Products that work at 5.8 GHz have less competition from other wireless products than those using the crowded 2.4 GHz frequency band.

Wireless amplifiers are available with different levels of audio quality, power consumption and standby power. Having a high-quality low-distortion amplifier is essential for good sound quality. Wireless Class-D amplifiers generally have standby power of 5 Watts or less and a power efficiency of larger than 80% but sometimes high audio distortion. Choosing a low-distortion amplifier is key. Good-quality wireless amplifiers have audio distortion of less than 0.05%.


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