Application, a very greedy

One of the most common terms in mind when it come to the migration to VoIP systems, the network bandwidth. This term - often synonymous with the speed of the network used - refers to the speed of data transmission over the network, either in kilobits per second (Kbps) expressed megabits per second (Mbps) or gigabits per second (Gbps). Bandwidth plays an important role in networking, because it defines not only the speed at which data moves from one place to another, but the total capacity of the network connection.
Bandwidth can be compared to a supply line of 6 Sanchez Purple AFL50th jersey
a building with water. The pipeline has a capacity of maximum flow from the water source and has a defined size of pipe installed. Therefore, it is not possible that the water can flow, the maximum supply capacity can be increased. The same is true in a network: Data transfer rate is only limited by the ISP (negative example), and the ability of cable / circuit.
VoIP bandwidth term using the analogy of the water line itself, say you install a pool inside the building. Of course, the water supply is not sufficient to supply water in the pool because the capacity of the pipeline was only for the purpose of the original design intended. It is therefore necessary to reconsider the existing pipe or install a separate line to carry water from the pool. This is exactly what happens when VoIP is added to an existing network - sometimes you assign either an increase in bandwidth or have a separate line for them.
VoIP, such as swimming pool can be a very greedy application. It requires a lot of bandwidth in the same manner that the pool requires a large amount of water. In both cases, we can do with the existing settings in the worst cases, but may be a victim by others include: water faucets water basin to a minimum during the filling of the basin can be reduced, and downloading files or browsing the Internet can be very slowly during a VoIP call.
Thanks to a regular PSTN bandwidth is typically slightly more than 64 Kbps bandwidth, so a 1.5 Mbit / s leased line (so-called T1 or DS-1 circuit) could be used for 24 consecutive calls consumed. VoIP requires a larger bandwidth to do because of the baler, including the call for more than 120 Kbps uncompressed VoIP, and the same DS-1 circuit could consume are used for 13 calls.
Fortunately, compressed VoIP media (voice converted to digital form with VoIP codecs). The most basic available compression can send twice the number of consecutive calls uncompressed using the same DS-1 line.
bandwidth while management is not possible to accurately determine the necessary bandwidth and can be effectively used by hardware or software on a VoIP network to measure a number of tools available to the network performance. For local networks, benchmarking tools such as netperf and creativity of 43 Polamalu white jersey
Canadians are useful for measuring the performance of TCP and UDP between two jobs. There are also network speed test bandwidth / available online that are useful for evaluating network performance.
But even with these tools is the accurate measurement of bandwidth usage is not possible. Factors such as configurations of hardware, software and latency specifications are dynamically changing all the time, so it is impossible to accurately calculate the performance, especially in a lively area of VoIP.