Several foreign guests came out accompanied by city leaders, school leaders, and leaders of the Provincial Post and Telecommunications Bureau. There was a girl in the crowd who caught the extra eye.

She is Leng Lan, who serves as a translator for foreign guests.

Standing in the pile of men, Leng Lan is like a cluster of new lotus, elegant and innocent, she has the beauty of a southern woman, and the tallness of a northern woman. At this time, she was listening attentively to the speeches of foreign guests and leaders, ready to translate at any time, but her eyes were quickly searching the crowd under the stage.

Jiang Xinwei knew that she was looking for herself, but he also knew that she was just looking for him subconsciously, and she didn't have to find him, so he didn't move, he still sat upright, his body sitting straight, and his eyes looking ahead.

Soon, she saw him, her good-looking eyes blinked, but immediately moved away, lowered her head and looked at the information in her hand very seriously.

After the foreign guests and leaders sat down, the school leader, as the host, only said a few opening remarks, which was nothing more than a brief introduction to the names and identities of the main foreign guests and leaders, and what to welcome and thank. In a brief introduction, Jiang Xinwei learned that the young expert named Frankl among the speakers was the son of the chairman of Etna Communications.

After a while, the speech began.

The first speaker was a middle-aged foreigner in his forties, who gave a speech on multi-channel carrier technology.

What is a carrier machine?

This thing is very profound, and it will not be clear for a while, so I can only talk about it in a general way. As mentioned earlier, people with a bit of telecommunications technology know the three major parts of equipment in the computer room, that is, switches, transmission equipment, and power supply equipment.

The carrier belongs to a kind of transmission equipment, and its working principle is simply that the electrical signals containing voice information are loaded from the switch to the carrier, and the carrier superimposes them with its own carrier signal, and then transmits them to the remote computer room through the guò wire, and the carrier there takes out the loaded voice information and sends it to the switch.

This completes the voice communication and enables people to talk over long distances.

Carrier technology can indeed solve the problem of long-distance calls, but it is a pity that now the Italians are talking about analog carrier technology.

Others may not know, but Jiang Xinwei knows that analog carrier technology is a technology that is about to be phased out. If it is a small enterprise to talk about knowledge, it is not harmful, so that everyone can learn more about some technology, but for this university that strives to be at the forefront of technology, for the leaders of the Provincial Post and Telecommunications Administration to participate, they talk about these backward technologies with such fanfare, it is a bit of a fuss and a bit of a disdain.

Listening to it, Jiang Xinwei heard the clue, the dare lover family did not come to our country to exchange technology, but to promote their products.

To be precise, he came to promote the inventory products, but except for Jiang Xinwei, no one else knew about it.

Jiang Xinwei looked at the leaders who accompanied the foreign guests on the rostrum, and couldn't help but feel sad in his heart, and at the same time he remembered some other things in his memory:

At present, both China itself and Western countries know that China has a huge market where the telecommunications industry has not yet started, and this market can accommodate a large amount of telecommunications equipment and store huge profits that are coveted by Western telecommunications companies.

Western enterprises are not good guys, they know that China is now eager to develop its economy, eager to break through the embargo of Western countries, and eager to obtain advanced technology from them, so they have played small tricks with our government and enterprises, and sold their backward products and inventory products to China at high prices.

Jiang Xinwei remembered that in the previous life, many small Western enterprises sold a lot of Ericsson's old user switch equipment that had been used and eliminated and could only be thrown away as garbage to Huaxia in large quantities, occupying a large market in Huaxia.

At that time, the country was only opened, our technicians looked at the western developed countries everything is good, although these old user switches are old, but their performance is far more advanced than those stepper and vertical and horizontal switches that are being used by the post and telecommunications bureau in China at that time, not to mention that there are many places in China that are using manual switches, since the price of the new switch is too high, then buy the old one to make do with it.

It was not until China's self-developed large-scale program-controlled switches appeared and began to be put into use that this situation slowly changed.

The foreign guest who is here today is a technician from the Italian company Etna Communications, who is shamelessly selling analog multiplex carriers that cannot be sold in Europe, the United States, and Japan under the guise of technical exchanges.

A carrier is a signal transmission device. The so-called transmission device, to put it simply, is a device that can transmit a telephone signal from one switch to another switch at a distance. Without them, people can't make phone calls over long distances. This device is capable of sending the voice signal of the switch to another switch tens of kilometers, hundreds of kilometers, or even thousands of kilometers away.

Their principle is that the carrier turns the voice signal into a carrier signal and loads it into a copper wire or copper-clad steel wire for transmission.

Generally, there are only a few or dozens of call circuits that can be provided by the carrier at the same time. However, China's carrier machine is even more backward, and the carrier used by many rural post and telecommunications offices even has a single-channel or double-channel capacity, that is, only one or two people are allowed to make phone calls with people in a distance.

With the development of China's economy, more and more people use telephones, and this kind of small and easy transmission equipment is obviously not good, and must be updated. If you can combine this Italian communications company

By replacing the carrier equipment that China is currently using, it will be able to increase China's telecommunications capability tenfold or dozens of times.

Shouldn't my country buy this kind of equipment?

No!

Because now a new technology is being developed, and its emergence has knocked away the advantages of the Italian company. It is precisely because of the development of this technology that the carrier produced by the Italian company has suddenly exceeded demand in the past and is basically unpopular now, and the company has also suffered unprecedented losses. In the past, they did not bother to sell their carrier products to China, but now they have to send people to sell them in person, and they have to use various names to fool China's experts and China's post and telecommunications departments.

This is the application technology of optical fiber-laser in communication transmission.

The communication channels provided by the optical fiber transmission equipment developed by this technology are extremely huge, and the two optical fibers can provide up to hundreds, thousands or even tens of thousands of communication circuits, that is, hundreds of people, thousands or even tens of thousands of people can talk at the same time, which is hundreds of times or thousands of times the capacity of the analog carrier!

Moreover, compared with carrier equipment, optical transmission equipment also has the advantages of small size, low energy consumption and low failure rate.

Jiang Xinwei crossed over, and naturally knew that the future transmission equipment must only be the world of optical transmission equipment.

In Jiang Xinwei's view, if we are fooled by a thriving foreign company, it may not matter if we suffer a small loss for the time being, and we will eventually be able to obtain a lot of benefits from the cooperation between the two sides, and may be able to improve the technical level of our technical personnel in the cooperation. But if we are fooled by such a bankrupt or bankrupt company, it will be too wronged.

"Can I stop the leaders here from being fooled by them? Can I get some benefits from this?" Jiang Xinwei thought to himself.

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