Wu Maocai looked at Fang Chen in disbelief, he really couldn't figure out why there were such fools in the world.

Fang Chen sighed faintly, these things are simply a joke in the future generations, because in the future generations, even fools know the importance of intellectual property rights.

But now the current situation in China is like this, state-owned enterprises, universities, and research units have received funds from the state and have developed things.

Then their own production capacity can not meet the needs of the market, or there is no production capacity at all, plus since the founding of the People's Republic of China, there is a glorious tradition of passing on the help and leading.

No matter how much money it has spent on researching something, as long as the brother unit says a word, it can go in a row, and it can even send people to train it until the church.

After the reform and opening up, a lot of technology flowed to the private sector in this way.

It doesn't matter, anyway, it's meat rotting in the pot.

But even more, there are those who go abroad, which makes it unbearable.

When people came to visit, everything was handed over!

It's just the difference between this and betraying the country!

Obviously, this BH01 is like this, anyway, the market is so big, I can't eat it, let some affiliated companies eat some, and I can earn some licensing fees, which is understandable, and it is the norm.

It is even said that this is normal, and technical secrecy cannot be understood.

Besides, it's just a small 24-door switch, which is not very technical and unimportant.

Wait a few months, Professor Wu Jiangxing of the School of Engineering and Technology of our army in Shangdu successfully developed the first 04 machine of Wanmen switch in China.

But it is precisely because of this reason that the technology was quickly spread to 537 factories in Luozhou, 522 factories in Hangzhou, 513 factories in Chuncheng, 515 factories in Shancheng, 738 factories in Yanjing, 4057 factories in Shangdu and other enterprises.

Then it was these companies that formed the first of the four in later generations, the giant China, the Julong Communication Equipment Group.

At this time, Guo Ping and Hu Houkun looked at Fang Chen with a little surprise, Fang Chen's attitude really had a feeling that made them impressed, this enlightenment, not to mention a high school student, and even a college student who graduated from a communication major may not have it.

Even they came out of school, and it took two or three years to have this enlightenment.

Now they really believe that Fang Chen is a graduate of BUPT, and even feel that BUPT is known as the first major in communication in Huaxia, which is really not a waste of fame.

Coughing twice, Hu Houkun said: "Now when we use our BH01 machine produced by Huawei, there is a problem, that is, the external line of the phone can be determined to be intact and can be connected, but the internal phone bell is never ringing." ”

"The specific situation is that when you call in, there is a prompt to transfer the extension number and check the number, and you can get through when you dial 0, but the phone just doesn't ring, do you know what the reason is?"

At this time, Hu Houkun's words already carried the meaning of the school examination.

In fact, he didn't expect Fang Chen to solve the problem, this problem had been bothering them for three days, if Fang Chen really solved it, then where would their face go.

His current identity is actually similar to the defense teacher in the graduation defense of college students.

When the defense teacher asks questions, he doesn't expect you to answer them all one by one, or even answer them well, he just wants to test your mastery of knowledge by asking questions.

Fang Chen frowned slightly, this was indeed a tricky problem for communication technicians in the nineties.

It's easy to say, that is, the phone can get through, but the ring does not ring, which is the so-called no incoming ringtone.

If the user asks such a problem, it is easy to solve.

Some phones will have a ring switch to control the ringing sound and turn off the ring signal.

Sometimes, due to the user or a child accidentally turning some control switches to make them in the off state, there will be a no-ring sound failure.

In addition, or simply if the ringing switch is broken, a similar failure will occur.

Or maybe you pressed the anti-scrambling password by mistake.

In addition, the company's program-controlled switch administrator does not have enough authority to set the extension number, and can only dial the company's internal line, and cannot go out at all, that is, to call calls outside the company, which will also lead to such problems.

This is actually a glitch, or a mistake in operation.

However, if the R&D member asks such a problem, it is often a big problem, in addition to the hardware failure of the equipment itself, it is likely that there is a design error.

This is a troublesome thing.

Sometimes, this kind of problem occurs only because thousands of small solder joints on the electronic board are soldered, or they are not soldered at all, but which one is not soldered, then it is necessary to use a multimeter and an oscilloscope to test, and even take a magnifying glass to check the solder joints on the circuit board one by one.

If it's a design problem, it's even more troublesome, it's okay to have a small problem, but if it's a big problem, especially the kind that affects the whole body, you need to completely overturn the design of the entire product, which is simply a disaster.

Fang Chen pondered for a moment, and then said slowly: "You guys check to see if there is an open-circuit fault in the telephone line, when there is an open-circuit fault in the ring line, even if there is a normal ringing signal sent in, it will not be able to make the horn or piezoelectric ceramic buzzer make a sound." ”

"When checking this kind of fault, when there is a call in, use a multimeter to measure the external line, if there is a ringing signal, and then check the fork spring switch, line connection, sound device, etc., you can quickly find out the fault location. ”

As soon as Fang Chen's words came out, Guo Ping and Hu Houkun were dumbfounded, as soon as the expert made a move, he knew if there was one, and as soon as he heard Fang Chen's words, he knew that Fang Chen was definitely an expert.

It can even be said that if you haven't been in the communications industry and have actually practiced for ten or eight years, you will never be able to say such a thing.

But looking at Fang Chen's age, could it be that Fang Chen learned communication from his mother's womb?

Otherwise, they really couldn't explain where Fang Chen's practical experience in the past ten or eight years came from.

As for Wu Maocai and Huiming, they were really shocked.

Guo Ping and Hu Houkun thought that Fang Chen graduated from Beijing Post and Abroad, but they knew Fang Chen's details very well!

What bullshit Beijing Post, Fang Chen hasn't even been to college for a day, and he hasn't even gone to high school for a year.

But in this way, where did Fang Chen know this, and what knowledge did they sound like in the clouds?

"Do you remember, the boss is talking to the telephone, and the big brother, the satellite phone and other things that can make calls, he scolds two things at every turn, and no one picks up the garbage heap and so on, especially when the phone is busy, he will always say that it is not as good as the one he designed. Huiming stabbed Wu Maocai, and then whispered.

Hearing Huiming say this, Wu Maocai really remembered that there was really such a thing.

"I thought that the Ninth Master was just scolding two sentences to get angry, but when I thought that the Ninth Master really knew this. Wu Maocai muttered a few words, his voice was inaudible, it was like a mosquito humming, for fear that Fang Chen would be able to hear it.

Now, in his heart, Fang Chen has the ability of gods and ghosts, and he was born to know it!

Otherwise, how can you know so many things!

Maybe, he used to scold the Ninth Master secretly, when he scolded him, and what he scolded, the Ninth Master knew everything.

Thinking of this, Wu Maocai shuddered instantly, and his gaze when he looked at Fang Chen was full of horror.

Fang Chen didn't know, so he answered a question, Wu Maocai regarded him as some kind of witch, a god-like existence.

"By the way, you can also use a multimeter to measure whether there is too much leakage in the telephone line, if these can be ruled out, then you have to see if there is a mistake in the splitting machine, or a design defect, or a problem in the design of the traffic software. ”

"Or, if the phone and the switch do not match, you first check the flash time of the phone, and then modify the machine's flash time in the system settings of the switch to match it. Fang Chen continued.

Guo Ping and Hu Houkun couldn't help but nodded, although what Fang Chen said was not necessarily right, but it could really be said to be insightful, if they followed what Fang Chen said, step by step, they would definitely be able to find out what the problem was.

And there are calls on the inner line, only 8001-8005 has, and the other 8006-8024 have no caller ID. Guo Ping continued to ask.

This time, he no longer had any intention of taking the school exam, and he was completely sincere in asking Fang Chen for an answer.

Fang Chen rolled his eyes and said helplessly: "Restore the factory, and then set all the data again, it should be okay." Or you use a virtual external line to test it, that is, use a short telephone line, connect to the external line port, and then use the internal line to call this extension number to see if there is a display. ”

Speaking of this, Fang Chen paused, and then continued: "I suggest that you thoroughly understand the BH01 machine of the state-owned enterprise and understand its principle design. ”

Can't even solve the caller ID problem, Guo Ping's level is really weak.

In fact, this is also a common problem of domestic reverse research and development, I don't understand the principle, no matter how the function is realized, what is the use, anyway, the full copy of the brain, and then install it.

As for whether it can be used after installation, whether it is good or not, it is a matter of total testing and users.

Guo Ping and Hu Houkun were suddenly embarrassed, and couldn't help but bow their heads in shame, Fang Chen was right, they really didn't eat the BH01 machine thoroughly.

But this is also normal, after all, they are now engaged in development, and they have only started to get it in the last two or three months, and there is really no way to eat the BH01 machine thoroughly for a while.

At this time, the roles of the three people suddenly changed, and the two of them didn't say that they admired Fang Chen, but they had to admit that Fang Chen's level was higher than the two of them, and it was more than a step higher. I want to talk about "The Top of the Rebirth Wave" with more like-minded people, "Chat with more book friends about your favorite books."