Patented VoIP signal degradation technology
The German company Infineon has filed a patent application for the technology of mixing garbage packets into VoIP traffic. The patent does not explain why this is done, but you can guess.
This technology is intended for the deliberate deterioration of the quality of VoIP-telephony. Who can benefit from its use? Obviously, this is beneficial for telecom operators that provide telephone services and simultaneously transmit VoIP traffic from their competitors, VoIP providers, through their networks. Due to the fact that the popularity of VoIP-telephony is growing rapidly, traditional telecom operators lose a significant part of their income.
US patent application number 0060062151 describes a method and device for mixing empty packets into voice traffic that is transmitted over communication networks. As written in the document, it allows you to "degrade the quality of voice services to the required level."
The technology works as follows. A computer on the network analyzes the passing traffic and extracts voice packets from it. Then it adds additional “pseudo-packets” to this stream, which are also marked as VoIP-packets, but do not contain useful information. Further, a special filter performs shaping (“cropping”) of traffic: it does not react to normal information packets in any way, but it “cuts” VoIP traffic. This filter delays a mix of original VoIP packets and pseudo-packets. As a result, some of the packets are lost, and the client software that performs decoding of the VoIP stream produces poor quality sound. This is expressed in jitter, timbre change, loss of part of the sounds.
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Another important part of the invention involves filtering out pseudo-packets at the last stage of shaping in order to eliminate any evidence of sabotage. After that, no one can prove that the operator intentionally degraded the quality of communication. Perhaps, similar technologies are already used in Russia, Belarus and other countries, where large telecom operators are now experiencing fierce competition and are suffering losses due to the onset of free VoIP-telephony.
Infineon has filed a patent application for its invention both in America and in its native Germany. In addition, in Germany, she patents another speech quality degradation technology that is transmitted via VoIP through WiFi access points.
This technology is intended for the deliberate deterioration of the quality of VoIP-telephony. Who can benefit from its use? Obviously, this is beneficial for telecom operators that provide telephone services and simultaneously transmit VoIP traffic from their competitors, VoIP providers, through their networks. Due to the fact that the popularity of VoIP-telephony is growing rapidly, traditional telecom operators lose a significant part of their income.
US patent application number 0060062151 describes a method and device for mixing empty packets into voice traffic that is transmitted over communication networks. As written in the document, it allows you to "degrade the quality of voice services to the required level."
The technology works as follows. A computer on the network analyzes the passing traffic and extracts voice packets from it. Then it adds additional “pseudo-packets” to this stream, which are also marked as VoIP-packets, but do not contain useful information. Further, a special filter performs shaping (“cropping”) of traffic: it does not react to normal information packets in any way, but it “cuts” VoIP traffic. This filter delays a mix of original VoIP packets and pseudo-packets. As a result, some of the packets are lost, and the client software that performs decoding of the VoIP stream produces poor quality sound. This is expressed in jitter, timbre change, loss of part of the sounds.
')
Another important part of the invention involves filtering out pseudo-packets at the last stage of shaping in order to eliminate any evidence of sabotage. After that, no one can prove that the operator intentionally degraded the quality of communication. Perhaps, similar technologies are already used in Russia, Belarus and other countries, where large telecom operators are now experiencing fierce competition and are suffering losses due to the onset of free VoIP-telephony.
Infineon has filed a patent application for its invention both in America and in its native Germany. In addition, in Germany, she patents another speech quality degradation technology that is transmitted via VoIP through WiFi access points.
Source: https://habr.com/ru/post/4229/
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