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Wednesday, September 30, 2009

Essential Guide to Voice over IP

Voice of IP (VoIP) to transmit voice communications over the Internet is a means. Some conversations are transmitted using the traditional telephone copper wires, instead, VoIP technology and traditional information, transmit data or computer to transmit voice and optical cabling is used. Unlike today the execution of VoIP technology 5 years ago, and this page will tell you all about it easy.

The company implementing VoIP because of the following reasons:

1. Significantly reduce their network operating costs, as well as maintenance. Because VoIP uses existing LAN / WAN and equipment, cabling, and setting a minimum for new equipment, there are very necessary. Only for voice and data with a single system management for simplified administration, and you can.

2. Fast implementation of the service. When using VoIP, flexible, open-simultaneous execution of the type of PSTN services using the IP protocol and the underlying technology is used.

How does VoIP work?

VoIP is the first step in the digitization process. So, do not want to compress the voice signal. Step 2 is compressed. The digital information is the only legitimate voice or listen to the noise around the first, the system is determined. If you detect the noise, it will be deleted. Next, a complex algorithm to reduce the size of the information is used to transmit. To suppress the noise and the voice codec is optimized for use in the stream.

After compression, the voice packets to put a chunk of time to add VoIP protocols. The transmitter is formed as a voice data packet is waiting to be collected and stored before the process occurs. Signal is added to reduce the packet transmission. Because the IP network that interconnects a set of rules for the interconnected network of more steps are required to be small. Address the complexity of the system, the interconnection of the packet within the packet is required and it tends to move through cyberspace, will pass through a series of processes.

When a packet arrives, finally, that in order to determine appropriate placement. Restore the original structure of the decompression process the data, while ensuring an appropriate time sequencing technology. Because the data through multiple paths, the way that was sent through the Internet, they do not necessarily arrive in the same order. Packet delay while waiting for incoming packets to resolve the situation was temporarily accumulated. How long the data is temporarily stored in the network depends on the setting.

The percentage of IP packets on the network may be lost or delayed, the period of congestion, especially in. In addition, some packets due to errors during transmission will be ignored. , Delay, and a significant degradation of voice quality, packet loss is the result of the damage. The traditional error-correction techniques, failure to remove chunks of data arrive, and the computer receiving the request packet is sent again, the message is delivered to end users exactly the same message from the lord. VoIP systems are as time-sensitive and can not wait for the retransmission, a more sophisticated error detection and correction of the system fill in the gaps will be used to create the sound. This process, the incoming speaker's voice portion of the store, and then missing, copy the contents of the packet uses a complex algorithm. Therefore, new sounds and sound information and communication to enhance batahbogye heard exactly the sound transfer is not made, but it is an improved version.

Because of reduced costs on maintenance, LAN exceeds the capacity of most businesses rely on VoIP solutions. Are not you think about it?

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