When you make calls using VoIP-technologies, you often face a situation when the sound of the voice is lost. Most of these problems are observed in the same direction, that is, at one end of the "wire" the subscriber can be heard, the other end he cannot. Moreover, there can be no sound heard on both sides. In addition, there are the following variations:
- At the beginning of the conversation (then the voice becomes audible);
- During a call (usually in a couple of minutes after the conversation begins);
- When you restart your VoIP equipment.
Why may there be such problems? VoIP telephony is a complex structure consisting of two main mechanisms - signaling and media traffic. The signaling makes it possible to establish a connection between two subscribers. The media traffic transmits the audio data, that is, voice. It works by converting voice into data in the RTP-packages, which are then transmitted from one user to another through the Internet connection. In the process of sending traffic, packages can be lost or delayed if the quality of the Internet connection is poor. In these cases, there are problems with audibility during a telephone conversation. It happens that the data packages do not reach the destination. As a result, the sound is completely absent when the conversation takes place. This may be due to incorrectly configured IP PBX.
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To determine the cause of the loss of voice when you call, you must first diagnose the VoIP system. In general, there are several options:
If you have problems with audibility, you should contact your voip provider to have your system tested. It will give you an opportunity to take a ping test to determine the quality of sound.
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