It happens that the subscriber is temporarily unavailable. What does it mean?

A person very quickly and for a long time gets used togood. Previously, somehow quite normal, most people lived without phones, although if necessary, call relatives in the nearest city had to go to the meeting point. Now, if the first time you can not get through to the mobile phone, some immediately panic, you just need to hear: "The subscriber is temporarily unavailable." What does it mean? What happened? Where did you disappear to? There may even be a panic. Let's try to understand this issue.

The simplest answers to the question

First of all it is necessary to understand thata mobile phone is a conventional device, stuffed with electronics, which has a battery and an on / off button. Therefore, the reason for the lack of communication may be that the phone is simply discharged or is off. In this case, you will not reach the subscriber at all in the near future.

But the most annoying thing is that with the second orThe third dialing of the connection occurs, and no one says anything. Many people have anger towards their operator and a desire to change it. Meanwhile, the reasons can be very different. And you do not have to worry too much when you hear in the receiver: "The subscriber is temporarily unavailable." What does it mean? It can mean anything, anything.

Some information about the principle of mobile communication

It turns out that the mobility of a modern phone -its weak point. If there is no connection between two conventional devices, there can be only two reasons: the absence of contact between them or the failure of one of them. In our case, everything is more complicated. After we dial a number and press the call button, the radio goes to the base station, then to the switch, where it is subjected to secondary processing and is directed to your switch, together with other calls, to the switch. It stores data about all subscribers and determines the ability to make a call, location, tariff plan and so on.

At the next stage, the call goes to the same subscribernetwork or redirected to another. There he makes almost the same way. When the person you are calling answers, the connection is established, and then the signal should be back. It may seem that the route is too long and problematic, but this is not at all the case. Before us - a very reliable system that handles a thousand calls per second.

Still, what does it mean: "Subscriber is temporarily unavailable"?

Errors can be creep in the indicated route. The radio channel between your device and the base station is the most vulnerable place. Indirect quality of communication - the level of reception on your phone. When it is small, the probability of error increases. Why and where does it fall?

The signal level decreases due to obstaclesbetween you and the base station and your removal from it. In some places, the signal can generally be lost: in elevators, basements, on the first floors, in the depths of large buildings that have metal fittings and thick walls. Distances between metro stations and road tunnels are also not the best places for mobile communications. Failure can occur from the re-reflection of electromagnetic waves from various radio equipment, base station and telephone in a dense building. Operators in this case increase the number of transmitters and use an increased frequency range. But nevertheless problems with communication are possible. Therefore, after hearing "Subscriber temporarily unavailable, call back later", follow the advice - call back later.

Other causes of problems with mobile communication

Sometimes, fortunately, not too often, switchesand the base stations are overloaded. This happens on big holidays, weekends, in places of mass events or in the area of ​​a large traffic jam. And if the last two examples are local, the first two are global. There are also many other reasons, so obviously invisible and appearing less often. Communication between the switch and the base station is transmitted in the form of signals over digital transport channels: these are wired, optical and microwave links. They can be affected by various factors, for example, lightning strikes, rain, voltage surges, equipment malfunction, construction workers' work and so on. When working, workers tear optical cables, cut the antenna feeder. All these lines have backup protection, but until switching is completed, there will be no connection for some time.

If the subscriber is temporarily unavailable, what does this mean? The software of the switch or your phone may hang. Fortunately, the operator's equipment rarely fails for this reason.

There are two more important factors in connection problems. The first is that some subscribers actively use the phone as a means of access to the Internet. In this case it is sometimes difficult to reach them. The second case, when the subscriber is temporarily unavailable - what does this mean? Sometimes - nothing good: the phone was stolen, and the SIM card was thrown out.

What can I do when I can not get through to the subscriber?

Very often, after assessing the situation, having lookedattentively around or on the display of the phone, you can make guesses about the cause of communication problems. It happens that a person wanted to make a call while away from civilization, and that the level of signal reception is not there, did not look. Get closer to the village and try again. Do not make calls in the metro and other similar places. After falling into heavy rain and thunder, wait until the nature calms down. When you see that the mobile phone is frozen, restart it and the connection will appear. And the most important rule: if the subscriber is temporarily unavailable - call back later. And let's hope that with the development of technologies, many of these problems will disappear.

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