Available Bit Rate的意思|示意

Available Bit Rate (ABR) is a communication protocol designed to provide users with reliable, quality connections over the Internet. The ABR protocol is used commonly in Voice over IP (VoIP) applications and data transmission over the Internet.

The main purpose of using ABR protocol is to ensure that a data stream is handled correctly, as it passes through different routers and switches. The protocol works by monitoring the available bandwidth in real-time and adjusting the data rate accordingly. This helps to deliver the highest possible data rate while minimizing the possibility of network congestion.

When using the ABR protocol, data is divided into three categories: best effort, conversational, and streaming. Best effort is data that can be handled with minimal effort and is also the least reliable type. Conversational data requires more processing as it needs to be routed more quickly, but it is considered to be more reliable and consistent than best effort. Streaming data requires more bandwidth and is the most reliable type of data.

For VoIP applications, ABR protocol helps to ensure that users experience better communication quality. This is because the protocol is designed to recognize when there is an increase in traffic on the network, and it can adjust the data rate accordingly. This helps to minimize network congestion and ensure that calls are delivered with the highest possible sound quality.

In addition to VoIP, the ABR protocol is also used in other applications such as video streaming, download acceleration, and gaming. By using ABR, users can access the best possible data rates while also reducing the possibility of experiencing network outages.