MTL - The Science Fiction World of Xueba-Chapter 444 Design

Early the next morning, Mu Donglai and his daughter packed their luggage and went to Xiangjiang. This time, they went to Xiangjiang. In addition to the invitation of Uncle Mu Qingqing to see the environment of Xiangjiang University, they also helped Pang Xuelin to apply for a global patent for CVD.

Although China has joined the PCT Patent Cooperation Organization, compared to the domestic PCT process, Xiangjiang is much stronger in terms of speed and norms.

As for Liu Fatzi, he started a series of processes such as company registration and formation.

At 9 am, Pang Xuelin arrived on time at the headquarters of Warwick.

Ren Zhengfei and several Warwick executives have been waiting for a long time.

In addition to Xu Wenwei I have seen before, there is also a man and a woman. It is the other two generals under Zhengzheng Fei, Zheng Baoyong and Sun Yafang.

Zheng Baoyong is the leader of Warwick's early R & D department. He has been engaged in the research and development of communication products since 1989. He has been responsible for the overall design of a number of program-controlled switching equipment. R & D work of door machine and later C & amp; C08 million door machine.

As for Sun Yafang, it goes without saying.

This is also one of the key figures of Warwick's rise. Warwick later attacked overseas markets and was developed by a team led by Sun Yafang.

Within Warwick, Sun Yafang's status is below one person and above 10,000 people. Although the company has several executive vice presidents, the actual power is below Sun. This is not only a matter of ranking, but also requires direct or indirect reporting. The problems she reported can be said that the decision-making level of Huawei's decision-making level is two people: Ren Zhengfei and Sun Yafang.

Some personnel appointments and important documents can be adopted as long as Sun Yafang has read the agreement; Warwick's company-level documents have only two people in the column of the report, which are called President and President Sun, and other vice presidents must have names; The documents of the marketing and human resources department she directly supervised were only copied to Sun Yafang; other vice presidents referred to Sun Yafang as General Manager Sun, and even Ren Zhengfei was General Manager and General Manager Sun in short.

But now, Sun Yafang is only the head of Warwick's marketing department. Ren Zhengfei was able to bring her over to meet Pang Xuelin, to a certain extent, it has shown that Ren Zhengfei treats her very seriously.

"Mr. Pang, this is Zheng Baoyong, the chief engineer of our company, and this is Sun Yafang, the manager of the marketing department!"

"General Zheng, General Sun, how are you!"

Pang Xuelin shook hands with Zheng Baoyong and Sun Yafang.

"Hello Mr. Pang!"

Zheng Bao and Sun Yafang looked at Pang Xuelin with a scrutiny. Although they had long understood that Pang Xuelin was unusual from Ren Zhengfei and Xu Wenwei, they were not ordinary, but they could not imagine.

Ren Zhengfei laughed: "Mr. Pang, everyone is waiting in the conference room, so let's start."

"Row!"

Pang Xuelin smiled and nodded.

Although he told Xu Wenwei the design plan of 2,000-gate and 10,000-gate program-controlled switches in the past two days, he only provided a general idea, and the specific technical details were not enough time to talk.

Today at this meeting, Ren Zhengfei summoned all the engineers in the Warwick R & D department, and Pang Xuelin explained to everyone the design ideas of the program-controlled switchboard.

Pang Xuelin and Ren Zhengfei entered the conference room side by side, and found that the conference room had been crowded by Warwick engineers.

Xu Wenwei, Zheng Baoyong and Sun Yafang found the three remaining seats to sit down, and Ren Zhengfei accompanied Pang Xuelin to the top of the meeting room.

Ren Zhengfei looked down and smiled, "Everyone is here, let's start now. This is Mr. Pang Xuelin, a R & D consultant who has been rumoured to be heard in our company in the past two days. Next, Pang Xuelin will explain to you about program control. Some technical ideas and ideas in the development of switches ... "

Speaking, Ren Zhengfei took the lead in applauding, and then a sparse voice sounded in the conference room.

Most people, like Zheng Baoyong and Sun Yafang, looked at Pang Xuelin with scrutiny.

Although there are many rumors about this young man, he said that it took him two hours to conquer the boss and Xugong by technical means.

But when everyone saw Pang Xuelin, almost everyone raised doubts.

Such a young man who looks like a high school student, is really as godlike as Xu Wenwei said?

Especially the first young man in his twenties sitting under the conference room was even more unconvinced.

As a young man who grew up in praise from others, Li Yinan is proud of himself.

He was admitted to the youth class of Huazhong University of Science and Technology at the age of fifteen. Even among a group of youth classmates, he was considered outstanding.

After graduating from undergraduate, he stayed in graduate school and just got a master's degree.

In fact, he has already interned at Warwick since last year, and has received high praise from Zheng Baoyong and Xu Wenwei.

Just a few days ago, he returned to school to defend his dissertation, and by the way completed the graduation procedures, waiting to return to the company to show his strength.

Who ever thought that when he came back yesterday, he heard that a talented young man came from the company and was hired as the company's R & D consultant by the boss. Although I don't know what the specific details are, Li Yinan was a little unconvinced.

His level is already quite good inside Warwick. How genius can he reach his own level?

Li Yinan didn't believe it.

Pang Xuelin's eyes were on everyone's eyes. Such a small scene was nothing to him at all. He smiled and said, "OK, let's go straight to the subject."

"Today we started with the design of the 2,000-gate program-controlled switch. I and Mr. Xu probably said before that the 2,000-gate program-controlled switch is mainly composed of three parts: the central processing module, the communication control module, and the central switching network."

"The central processing module module includes a secondary power board (PWS), an alarm processing board (ALM), a main processing board (AMP), a central database board (CDP), a bus control board (BCP), and a built-in business processing board (ISP). The bill storage board is also located in the framework of the central processing module. The hardware of the main processing board, the central database board, and the bus control board are CPC boards, and the functions of the main control, central database, and bus transfer are completed by loading the corresponding host software. Work in active / standby mode. The main processing board and the bus control board are fixedly configured as a pair. The central database board and the built-in business processing board are configured according to the actual situation. The central database board is configured with at least one pair, which can be equipped with a maximum of seven pairs. Built-in services There can be up to six pairs of processing boards. "

"The main processing board is the hub of the entire system. It is responsible for the status management of each board in AM / CM (including SPM, SRM) and front-back communication. The AMP and BAM are directly connected through the 10M / 100M Ethernet port. The functions that the CDP board can complete include user hunting, trunk selection, ITC channel management, ECP channel management, and management of various public resources in the SRM box. The BCP board is responsible for each board in the CPM box Communication between ISP boards. The ISP board performs functions such as special number conversion, calling number identification, and password billing. The ALM board is responsible for serial communication and manages the status of the PWS board, fan box, etc. The SUB board is the bill storage board, and the SPM module. The generated CDRs are backed up on the SUB board when they are sent to the BAM. When the BAM fails, the SUB board can replace the BAM to complete the CDR storage function. The SUB board realizes the safe storage and backup of the CDRs and improves the reliability of the system ... "

While explaining, Pang Xuelin described the design of the entire central processing module in the form of a block diagram on a white board behind him with a marker.

Below the conference room, rustling excerpts and engineers' comments were heard from time to time.

"This plan feels much better than our previous plan."

"I don't think there is anything wrong with the hardware."

"It also has one more SUB board than our previous solution. With such a safe storage and backup function, the redundancy of the system is greatly increased."

"It depends on how the control software is designed. If the software is well designed, then this solution is highly feasible ..."

The engineers under the stage talked a lot.

Ren Zhengfei turned his head and smiled at Zheng Bao next to him: "Lao Zheng, what do you think?"

Zheng Bao blinked with his eyes and said, "This plan is very good, this guy, something!"

On the other side, Li Yinan thoughtfully looked at the text on the whiteboard.

He had to admit that the young man on the stage still had something.

Pang Xuelin didn't pay attention to the following reactions, but continued his own explanation.

"Next we talk about the communication control module (CCM). The communication control module is the core of inter-module communication. There are two independent frame switching network planes, called 0 plane and 1 plane. Each plane consists of a BA board. The two planes share a motherboard. Each CCM plane can provide 56 2.048Mbit / s HWs, with a total HDLC switching rate of 112Mbit / s, and the rate of each channel is 64kbit / s ~ 2.048Mbit / s. "

"The CCM module includes the secondary power supply board PWS, the frame switching network board FSN, and the bus management control board BA board. It is flexibly configured according to the number of interface frames and service processing frames, with at least two. FSN is used to implement HDLC signaling for multiple HDLC channels. Link switching can provide a maximum of 16 2MHW. The BAC board is responsible for completing the channel configuration and bus arbitration of the communication control module frame switching network, and monitoring the working status of each board in the communication control module. The BAC board also has a frame switching function , Can provide eight 2MHW, which has the function of a half FSN board. "

...

"Finally, we talk about the central switching network. The central switching network is a full utilization network. The maximum capacity is 128k × 128k. The actual installed capacity can be superimposed in 16k × 16k units between 16k × 16k ~ 128k × 128k and 128k × 16k. The capacity can be expanded smoothly with a capacity of 128k. The switching network system of the digital program-controlled switching system has a three-level network structure, which is composed of an edge switching network input stage, a central switching network, and an edge switching network output stage. The central network consists of 16 8k single T network units. Every two 8k single T network units are put together on a single board. This board is called the central network unit board (U board), which completes the central switching of the 128k network, that is, the second-level switching of the service switching network. Edge The network consists of 64 4k single-T network units. Each eight 4k single-T network units are placed on a single board. This board is called an edge network unit board (SNU board), which completes the edge-level switching of a 128k network. Four constitute a primary switching network and the other four constitute a tertiary switching network. "

"As for the specific structural composition of the central switching network, the central switching network frame occupies the position of two standard chassis, and the large motherboard structure. The (network communication control) board is the control board of the entire ET, which completes time slot allocation, networking operations, and communication. The communication function of other modules. BDR is a bus driver board, which provides the control bus for NU and SNU boards. PWS is a high-power power board that can provide 300W / 5V power output. Other single boards are active and standby. U board must be Full configuration, otherwise there will be blocking. The SNU board is based on capacity and can be appropriately reduced ... "

All morning, Pang Xuelin was explaining the hardware design.

From the overall structure of the program-controlled switchboard to the position of the chassis, circuit board installation, and various redundant designs that have been considered by everyone, Pang Xuelin has listed them one by one.

By this time, those Warwick engineers under the stage had long been questioned.

Even Li Yinan, who was not convinced, copied the design of Pang Xuelin honestly like a primary school student.

"General Ren, where did you get such a big baby?"

Zheng Bao couldn't help but sigh.

When Ren Zhengfei paid this great price to hire this young man, Zheng Baoyong had some doubts.

After all, now that Warwick has such a tight cash flow, it will allocate another one million cash to this young man, and then leave the R & D funds for program-controlled switches, but there is not much.

But in the morning, Pang Xuelin's performance completely dispelled Zheng Baoyong's doubts.

As an experienced engineer, Zheng Bao knew very well the technical difficulties of program-controlled switches.

Based on the current domestic industry level, it is very difficult to design a program-controlled switch with qualified quality.

The solution given by Pang Xuelin is exquisite in structure, detailed in detail, and very mature. Even compared with the products of leading communication equipment manufacturers abroad, there are many unique features.

Ren Zhengfei showed a satisfied smile on his face. There was no doubt that in the morning, Pang Xuelin's performance had completely eliminated the doubts in everyone's hearts.

After explaining the design of the program-controlled switch, Pang Xuelin laughed, "Do you have any questions?"

Everyone in the audience looked at each other, UU reading books www.uukanshu.com everyone is not a fool, this level of design, no one in the whole Warwick Company can do it.

It takes a while for everyone to digest and understand, let alone ask questions.

The meeting room could not help quieting for a while.

At this time, Li Yinan slowly raised his hand: "Mr. Pang, I am Li Yinan from the R & D department. I would like to ask when the software system design plan will be explained?"

Pang Xuelin could not help but hesitated. He did not expect that the tall and thin boy with a clean face was Li Yinan.

He thought for a while and said, "In the afternoon, this afternoon, I will share with you the algorithms of the 2,000 program-controlled switches."

"Then I'm fine."

Li Yinan sat down.

"Okay, it's almost time. Let's go to dinner first, let's talk over after dinner."

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