MTL - The Science Fiction World of Xueba-Chapter 442 Ren Zhengfei's shock

In the next two days, Pang Xuelin's house was at Liu Fatzi's house, and he began to write technical materials based on relevant papers he had read about Warwick C & amp; C08 program-controlled switches in the real world.

Two days later, Pang Xuelin took a dozen pages of manuscript papers, went out of the house with his father and daughter, Liu Fatzi and Mu Donglai, and went straight to the Shenyi Industrial Building of Nanyou Industrial Park.

Warwick is the only one in this building.

When he first arrived at the door of Warwick, a man with thick eyebrows and a tall figure walked out of it. Pang Xuelin's eyes brightened and he stopped the other person: "Hello, may I always be with you?"

The man looked up and down Pang Xuelin and said, "You are ..."

Pang Xuelin pointed at Mu Donglai: "This is Professor Mu Donglai of Chang'an Jiaotong University. We are more interested in your company's program-controlled switchboard. We have a project that I hope to have a good talk with Mr. Ren."

As soon as the man's eyes brightened, a smile suddenly appeared: "Come in quickly, Mr. Ren is in the company, and I will take you to find him."

Today, Warwick is in a tight state of capital chain, and any customer who can bring funds to Warwick is welcome.

Pang Xuelin nodded with a smile.

Mu Donglai whispered: "Xiao Pang, you know him."

Pang Xuelin smiled and said, "He should be Xu Wenwei, and Ren Zhengfei dug it from Elite. It is one of the main leaders of Warwick's technology. Warwick's first ASIC chip designed with its own EDA came out. R & D. "

Pang Xuelin didn't intentionally lower his voice. Xu Wenwei, who was leading the way, couldn't help looking back at Pang Xuelin, but didn't say anything.

Pang Xuelin was watching Warwick's office environment while walking.

Warwick's office is not large. It is a bit like the Internet company in the future. A computer is densely distributed in various workstations. Most people are buried in their own affairs.

Soon, everyone came to the door of Ren Zhengfei's office.

Xu Wenwei knocked on the door, and soon there was a clear voice inside.

"Come in!"

Xu Wenwei pushed in, and said, "Mr. Ren, a customer came to visit, saying that he is a professor from Chang'an Jiaotong University."

"Hurry them in!"

Soon, Pang Xuelin and Mu Donglai, Liu Qi, and Mu Qingqing walked in and saw a young, familiar face appearing behind the desk.

In the real world, because of the Sino-US trade war, Ren Zhengfei, who has always been low-key in the media, had to stand up for the Warwick platform.

At the same time, it also shows the style of China's top entrepreneurs to the world.

Pang Xuelin and Ren Zhengfei in reality only met once. It was at the reception of the establishment of the Golden Dragon Group. Ren Zhengfei ran over to pay a glass of wine to Pang Xuelin, hoping that Warwick and Qiantang Lab could cooperate in the field of carbon-based chips.

Since then the two have not had much contact.

Now in the world of the Chinese Sun, facing the 49-year-old Ren Zhengfei, the two are destined to have more intersections in the next time.

Ren Zhengfei got up from the office chair, went straight to Mu Dong and laughed: "Hello, hello, I'm Ren Zhengfei, may I ask you?"

Mu Donglai smiled and said, "Hello President Ren, I'm Mu Donglai from Chang'an Jiaotong University, but this time there is someone else who wants to work with you. I'm just accompanying guests."

"Companion?"

Ren Zhengfei took a moment's notice and turned his attention to Liu Fat.

Among the four people who came over, Pang Xuelin and Mu Qingqing looked young and awkward. Although their face values ​​were high, they were automatically ignored by Ren Zhengfei.

On the contrary, Liu Fat, who has been doing jade business, is more businessman-like.

Liu Fatzi pointed at Pang Xuelin and smiled: "General Manager Ren, don't look at me, I am also a guest, and it is my brother Pang who really wants to work with you."

Ren Zhengfei turned his eyes to Pang Xuelin, his face flashed with surprise. Whether it was Mu Donglai or the fat man in front of him, he could see from their clothes and temperament that the other party was not an ordinary person.

But he never thought that both of them would just accompany the boy in front of him.

Even Xu Wenwei, who was standing aside, showed a touch of surprise on his face.

Pang Xuelin smiled and said, "Hello President Ren, I'm Pang Xuelin from Lancheng University. I'm glad to meet you!"

"Brother Pang, what kind of cooperation do you want?"

Ren Zhengfei quickly converged his surprised expression and smiled.

Pang Xuelin smiled slightly and said, "Ren, let's just sit down and talk."

"Oh, look at my mind. Please sit down, please sit down."

Soon, everyone sat down in the reception area of ​​Ren Zhengfei's office, and Xu Wenwei on the side took the job of a secretary to help everyone with tea and water. Finally, he sat down beside Ren Zhengfei.

Obviously, at this time, Xu Wenwei was already equivalent to Ren Zhengfei's left arm and right arm, and he was one of the senior executives within Warwick.

"Brother Pang, now you can talk about which of our products are you interested in?"

Pang Xuelin laughed and said, "General Manager Ren, I am more interested in the C & amp; C08 program-controlled switch you are developing."

Ren Zhengfei froze for a moment, and suddenly said: "Brother Pang, today you can take the initiative to come to Warwick to find us for cooperation, then I will not talk with you at will, our program-controlled switch is still in development, Some orders have been placed, but the exact delivery time cannot be determined, and I guess I will have to wait as soon as next year! "

Pang Xuelin shook his head with a smile and said, "General Manager Ren, the cooperation I said is not about buying your switch."

"why?"

Pang Xuelin took out the results of his last two days from the folder he carried with him and handed it to Xu Wenwei aside. He said with a smile, "General manager Ren, you don't understand technology. Let this general manager appraise it."

Xu Wenwei turned to the dozen or so bound A4 sheets and saw the text above, he couldn't help but hesitated.

"Two Thousand Gate Program-controlled Switch Design Scheme and Ten Thousand Gate Switch Software Algorithm Design"

Xu Wenwei is one of Warwick's leading R & D leaders.

In 1991, Ren Zhengfei was shifting the company from an agent switch to a research and development switch. During the process of research and development, Zhonghuawei found that if the universal chip used by everyone was used, the product would be caught in a sea of ​​price wars.

If you want to get rid of your competitors, you can only develop your own chips.

At the time, Warwick was developing a user switch HJD48 (analog switch). Warwick's "No. 2 Chief" Zheng Baoyong was responsible for the development of the entire system. After Xu Wenwei arrived, he set up a device room to engage in printed circuit board (PCB) design and chip design.

The chip developed by Xu Wenwei is an ASIC chip for switches.

In the research and development process, Xu Wenwei first designed his own circuit on the PAL16 programmable device, and then carried out actual verification. After the verification was passed, he commissioned Xiangjiang's company to design an ASIC chip, which was then sent to Texas Instruments for tape-out production.

This cost is expensive, and the one-time engineering cost is tens of thousands of dollars.

There were foreign exchange controls in the early 1990s, and foreign exchange quotas were very scarce.

At that time, Ren Zhengfei could really say that he had broken his teeth to support Xu Wenwei's R & D.

This is a very complicated process. Designing on a programmable circuit is not easy or successful for many experienced semiconductor design talents.

However, Xu Wenwei's level is not really covered. The process that originally had a low success rate was directly successful. Xu Wenwei came to Warwick in less than a year, allowing Warwick to have its own chip for the next C & amp; The development of the C08 program-controlled switch has laid the foundation.

Nevertheless, in the past year or so, C & amp; C08 program-controlled switches encountered many problems. The delivery time originally scheduled for May this year with Yiwu had to be delayed to October.

Now that June has entered, C & amp; C08 program-controlled switches still have many problems that have not been resolved.

During this time, Ren Zhengfei's hair turned white.

In history, it was the addition of another genius that brought Warwick's C & amp; C08 program-controlled switch project back to life.

This is Li Yinan.

Li Yinan, born in Hunan Province in 1970, was admitted to the youth class of Huazhong University of Science and Technology at the age of 15.

In June 1993, Li Yinan joined Warwick after graduating with a master's degree. He was promoted to Huawei engineer in two days, to lead engineer in half a month, to deputy general manager of Central Research in half a year, and promoted to Warwick's chief engineer / central research in two years. The president and 27-year-old took the throne of the vice president of Warwick.

It was this talented boy who completed Warwick's C & amp; C08 project.

In the following years, Warwick continued to improve on the basis of C & amp; C08 program-controlled switches, developed a million-door program-controlled switches on the basis of this, and sold this series of products to all over the world, bringing hundreds of billions of RMB to Warwick. Revenue has made the cornerstone of Warwick's rise in the first stage.

But now, Li Yinan hasn't come yet.

Pang Xuelin can just make a time difference and hand over the design of the complete version of the C & amp; C08 program-controlled switch to Ren Zhengfei.

The office quieted down, only Xu Wenwei's tumultuous page turning.

The more he looked, the more solemn the expression on Xu Wenwei's face.

From the carelessness of the beginning, to the shock of gradual gradual gradation, to the later, it was completely dignified.

About half an hour later, Xu Wenwei took a deep breath and put the information on hand on the coffee table.

"Xiao Xu, how about it?"

Xu Wenwei said: "Brother Pang, may I ask who designed this technical information?"

Xu Wenwei does not believe that this is Pang Xuelin's handwriting. This design solution is mature and the design concept is ingenious.

Only those Daniels who work for top communication companies such as Alcatel and Ericsson can design such excellent products.

Pang Xuelin smiled, pointed to himself and said, "Far in the sky, near in front of me."

"You talking about yourself?"

Xu Wenwei's face showed an incredible color.

Even Ren Zhengfei was shocked.

Just now Xu Wenwei asked Pang Xuelin who wrote this information, and Ren Zhengfei realized that this technical information was not normal.

But he never thought that this information turned out to be the handwriting of this young man who looked like a high school student.

Pang Xuelin laughed: "Why, don't you believe it?"

Xu Wenwei said, "Brother Pang, what university did you graduate from?"

Pang Xuelin laughed and said, "Exactly, I haven't formally entered the university yet, but my master is Chen Wenyuan, a professor at the Department of Mathematics at the University of Lanta, and my second master is Xu Baiqing, the president of the University ...

Xu Wenwei and Ren Zhengfei couldn't help but look at each other, and did not know whether Pang Xuelin was true or false.

At this time, Mu Dong laughed aside, took out a work permit from his arms, and said with a smile, "General Manager Ren, General Manager Xu, this is my Chang'an Jiaotong University work permit. If you do not believe it, you can call my school to verify A moment, I can prove what Xiao Pang said. "

At this time, Mu Qingqing and Liu Fatty also said, "We can also prove."

Mu Qingqing then added: "Mr. Ren, the big brother is amazing. Some time ago, he also developed a new CVD player, which is much cheaper than the LD laser player on the market. Ordinary optical discs can Broadcasting, the reason why Big Brother asked you to cooperate with Warwick is because, on the one hand, he knows that you have encountered difficulties in the development of program-controlled switches, and on the other hand, he also hopes to cooperate with you to obtain original funding for the production of CVD. "

Xu Wenwei and Ren Zhengfei glanced at each other, Xu Wenwei smiled bitterly: "Brother Pang, it's not that we don't believe it, this ... this is really incredible."

After a moment of groaning, Xu Wenwei said, "Brother Pang, since you said it was designed by you, can you talk about your design philosophy?"

Pang Xuelin laughed and said, "OK, then I will start with the principle of the program-controlled switchboard."

"An important application of program-controlled digital switches is communication systems, which are generally used in dispatch centers and communication stations at various levels in communication systems. The hardware of program-controlled switching systems can be divided into two systems: voice channel systems and central control systems. Voice channels The system consists of a switching network and peripheral circuits. The peripheral circuits include user circuits, repeaters, scanners, network drivers, and voice channel equipment interfaces. The functions of the central control system include two aspects: On the one hand, the call is made. Processing, on the other hand, is the management, monitoring and maintenance of the daily operation of the entire switch. "

"Below, let's start with the basic principles of the user module. The user module is the interface of the user's telephone and the switching network in the digital program-controlled switching system. Its functions can be summarized into seven functions of BORSCHT, specifically: B (Batteryfeeding) Electricity; O (Overvoltage) overvoltage protection; R (Ringingcontrol) ringing control; S () monitoring; C (CODEC & amp; filters) coding and filtering; H (Hybridcircuit) 2-4 line hybrid circuit; T (Test) test . "

"In digital telephone communication, people's speech is analog signals, then the analog signal is converted to digital signal by A / D conversion at the transmitting end and then sent to the transmission equipment, and the digital is converted by D / A conversion at the receiving end. Signals are reduced to analog signals. Digital signals can be generated using a variety of modulation methods. Commonly used is pulse code modulation, or PCM (PulseCode). "

"Time division multiplexing is a method of grouping multiple pulse sequences of discrete signals in one channel through grouping, compression, and cyclic ordering to become multiple signals that do not overlap each other in time. Time division communication is also called Time-division communication is the main method of digital telephone multiplex communication, so PCM communication is often called time-division multiplex communication. "

"In the process of converting a voice analog signal into a digital signal, we know that in order to ensure that the receiving end can restore discrete digital signals to continuous analog signals, the sampling frequency needs to be 8000 Hz, that is, every 125 microseconds. This period of time is called a time slot. The more the number of channels, the smaller the time slot of each channel. China adopts the PCM30 / 32 standard proposed by CCITT as a group of standardized time division multiplex transmission systems. "

"The task of a telephone switching system is to establish a temporary channel for voice signals (connection) between subscriber lines, between subscriber lines and trunks, or between trunks and trunks. This work is finally done by the switching network. In the program-controlled switching system, the switching network can be divided into two types: space division switching network and time division switching network. "

...

Pang Xuelin's tone was unhurried, and he explained the principle of the program-controlled switch. After speaking the principle, he continued: "This is the basic principle of the program-controlled switch. Next, I will explain my design plan based on the basic principle."

"In this program-controlled switch I designed, it mainly includes the central management / communication module (AM / CM), business processing module (SPM), shared resources, and module (SRM) in a physical location integrated with AM / CM. "

"The central switching network () completes the service switching function, and its capacity can be superimposed and configured in units of 16k × 16k time slots according to the actual situation, and the maximum can be exchanged at 128k × 128k time slots. The service line interface module (LIM) mainly completes service data and The composition / decomposition of communication signaling data and the system transmission line drive interface function enable AM ​​/ CM to connect with various network devices. LIM also provides voice channels and signaling between the service processing module (SPM) and the shared resource module (SRM) The interface enables the business processing module (SPM) and shared resource module (SRM) to be embedded in the AM / CM. The post management module (BAM) completes the operation and maintenance of the AM / CM and connected users and provides centralized alarms for faults. Data management, providing network interfaces for terminals, implementing remote / centralized maintenance functions ... "

"The Synchronous Timing Module (CKM) ensures that the system is synchronized with the higher-level network, and provides synchronization timing benchmarks used by various modules within the system. The Central Processing Module (CPM) completes the storage and processing of the system's global data, and is responsible for Board for management. The service processing module (SPM) completes the signaling and business processing. The shared resource module (SRM) provides all necessary resources required for business processing, including signal tone, dual tone number receiver, multi-frequency mutual control transceiver Device, calling number display, conference call, etc ... "

Time passed minute by minute, and UU read the book www.uukanshu.com without knowing it, more than two hours passed.

Xu Wenwei nodded frequently while listening, and from time to time wrote down some of what Pang Xuelin said.

The expression on Ren Zhengfei's face was also shocked from the beginning, and gradually gradually appreciated, and later, his face was already full of smiles.

Liu Qi and Mu Donglai did not understand at all. Liu Qi yawned from time to time. Everything Pang Xuelin said was like a godsend to him.

Mu Dong came with great interest. Although he didn't understand it well, from the expressions on the faces of Ren Zhengfei and Xu Wenwei, he could see that Pang Xuelin was conquering each other step by step, just as he had conquered himself and Liu Fat.

Mu Qingqing touched his chin, staring at Pang Xuelin without blinking.

In the eyes are slowly worship and admiration.

In her eyes, Pang Xuelin was the most handsome at this time.

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