Chapter 412 Gold Switch Silver Switch Iron Switch
Gao Zhendong felt a little amused when he saw Chief Engineer Feng, who was gathering his friends and had a bunch of lustful subordinates with him.

You are so proactive. It hasn't been long since you last came back, and you have already completed the software documentation standard work that your Institute of Communications is responsible for?

In response to Gao Zhendong's question, Chief Engineer Feng was very single: "It's not finished yet, but we have a special comrade in charge of that work. Chief Engineer Gao, we are a research institute. Compared with research institutes, we have more personnel and so on. The comrades here are the backbone of our telephone research institute. You can use them however you want. Just let me know."

Comrade Lao Feng did not forget to mention the Yin-Yang Calculation Institute when he spoke. Generally speaking, this is indeed the case. Although the institute is set up within the academy, the resources and scale of the institute are, in most cases, not as good as those of the academy.

But this is not necessarily the case. Some institutes are more independent or have more special work, so the size is actually uncertain. For example, the administrative level of the Institute of Computing is actually the same as that of the Institute of Communications.

Since they have made such arrangements and there are indeed people in charge of related matters, Gao Zhendong will just go with the flow. Is he questioning whether they have insufficient manpower?
Then let’s get started.

"Chief Engineer Feng, OK, then we will start informally and discuss it internally. Did you bring the materials on the current status of telephone exchanges that I asked for last time?"

Mr. Feng took out a document and handed it to Gao Zhendong: "It's been prepared a long time ago, Chief Engineer Gao, come, take a look first."

Since they are so eager to start, they must have made thorough preparations.

Gao Zhendong took it and frowned as he looked at it.

There is no need to frown on the number of switches and other situations. It is not that these situations are optimistic, but we already know that these situations are very bad and we have psychological expectations.

Needless to say, no one has a programmable switching system now.

Most of the switches in use are manual switches, the kind that require an operator to unplug the plug. There are a small number of controlled switches, which are the previous generation of programmable switches.

However, the number of controlled switches is extremely small, and except for some equipment installed before liberation, there has not been much progress since liberation.

These control switches are also varied. There are some advanced vertical and horizontal control machines, but there are more ancient stepping, rotary and lifting systems. Gao Zhendong suspects that these things are only on the list but not in use because the compatibility is really poor and they cannot be put together.

Even Gao Zhendong could see that in order to maintain compatibility and availability, except for a small number of machines that could still be connected to the grid, these switches had been replaced and reversed by manual switches.

Basically, at this time, manual switches dominated the market or had an absolute advantage.

The reason why it is an absolute advantage is that in addition to the old machines mentioned above, there is still a unique one, that is, there are still domestic switches that imitated the old Russian Type 51 switch in 47. This is a switch that combines the lifting and rotating systems, and it is not even a vertical and horizontal system. The disadvantages are loud noise, slow movement, easy wear and tear, and difficult maintenance.

As for the actual usage, it’s hard to say.

This thing is extremely expensive and its structure is incredibly complicated. The fact that it doesn't even have a formal domestic model name tells us that its actual usage is not optimistic.

There was no other way. After the founding of the People's Republic of China, the channels from the West were no longer accessible. The price of this product was not cheap, and it was not affordable even if it was accessible. At that time, the West was indeed more prosperous in the field of switches.

As for the Russians, they themselves are a weakling in this regard and naturally can't help much. Why are they also weaklings? Just look at the Type 47 above and you will know.

It's been 47 years, and they have developed a new rotation system + lifting system. You should know that by this time, countries like the United States have already switched to the vertical and horizontal system.

If this Type 47 is calculated based on a scale of 10000 doors, a total of 11000 rotary selectors, about 5000 rising selectors, and 60000 flat relays are used.

If these data do not seem so exaggerated because of the scale of 10000 doors, then looking at the size of these parts will make you understand why everyone likes to say that the Russians' things are stupid, big, black and crude.

The ЩИ-11 and ЩИ-17 rotary selectors are 78~80 mm high, 33 mm wide, 100 mm deep and weigh 275~300 grams, which is half a pound each!
The ДШИ-100 lifting and rotating selector is 100 mm high, 140 mm wide, 140 mm long and weighs 900 grams, which is two kilograms each!
The РПН type flat relay is 25 mm high, 35 mm wide, 105 mm long, and weighs 170~190 grams. One relay weighs only to grams!
The funniest thing about this thing is that the earliest translated name was not automatic telephone exchange, but automatic telephone exchange "bureau"!
Come to think of it, if it weren't for a bureau as big as this, it wouldn't be able to accommodate this thing.

Do you know why it is said that the imitation of this thing is not very effective?

With this quantity, this head, this amount, and this cost, in the early days of the founding of the People's Republic of China when everything was in ruins, forget it, let's just use manual labor.

Moreover, later on, even the imitations may not be able to be produced, after all, successful imitation does not mean full localization.

However, the reason why Gao Zhendong frowned was not this, but that apart from the existing models and quantities, other data was very little.

For example, there is no detailed data on call volume, only some data on the number of calls made by each bureau. However, the actual evaluation of call volume is far from that simple.

Generally speaking, the traffic data used for equipment research and development refers to the traffic volume in the busiest hour of a day, also known as busy hour traffic. The "busy hour" here refers to the "busiest hour" rather than the "busiest time". There is a difference between the two.

The calculation method is to multiply the average number of calls per unit time by the average duration of each call. If both units are based on hours, the former is "call/hour" and the latter is "hour/call". There is a problem when the multiplication is done, and the difference is not calculated. Therefore, a new unit is introduced, called "Eire", abbreviated as E, which does not mean a country.

However, there was no relevant content in the material in Gao Zhendong's hand. If the unit E was not considered normal due to its origin, but there was not even a call volume calculation, then there was obviously a problem.

Call volume is a basic data that involves the determination of switch size and the multi-level selection and matching of switching networks.

If we don't even have this, then there's no way we can talk about other data like call loss, line group utilization, line group utilization rate, etc.

Although Gao Zhendong felt very surprised, he felt relieved considering that most of the calls were manual. Generally speaking, the operators don't have the time to count how long you call.

Chief Engineer Feng looked at Gao Zhendong's expression and knew that there seemed to be something wrong with the data.

"Chief Engineer Gao, is there anything wrong with this data? The current situation is indeed not optimistic, but the data is still relatively complete."

Gao Zhendong couldn't say that your data was really incomplete. After all, the conditions were like this, and the comrades from the Institute of Communications had done their best.

Forget it, just like the laser gyroscope, let’s start with the basics.

"Well, it is very complete, but some of the statistical calibers need to be adjusted. So, I will give you some relevant principles. Comrades, please take the trouble to collect statistics according to the above principles."

Gao Zhendong put it very tactfully.

He turned around and pretended to be in front of the safe, then took out the first few pages of the textbook on programmable switching systems. Just for these pages, he used up another lottery draw.

"Mr. Feng, take a look at this and see if you can adjust the relevant data." After saying that, he handed these basic definitions and calculation methods to Mr. Feng.

These basic definitions are very simple and the calculations are not complicated. At least after Gao Zhendong laid out all the formulas, the comrades from the Institute of Communications basically understood them at a glance. Even if there were things they couldn't understand for the time being, they would understand them by asking Gao Zhendong on the spot.

Just these few pages of paper made Chief Engineer Feng admire him. He originally thought that Chief Engineer Gao was only strong in computers and automatic control, but after looking at these pages of manuscript, he found that he also had a deep understanding of communication networks.

These parameters are not complicated, but they can measure the most basic working status and performance of a telephone network very well.

The only problem was that he finally understood why Chief Engineer Gao was frowning.

The data I brought cannot support it!

No matter how simple the statistics and calculations of the data are, they still need basic data to be processed. After figuring out Gao Zhendong's calculation method for these parameters, Lao Feng immediately realized that basic data was missing.

However, as the chief engineer of the Communications Institute, he has the courage and qualifications to make decisions on the spot.

"Chief Engineer Gao, I've taken a look and found that our basic data cannot support the statistical results you want. So, give me a month and I promise to bring you the data of various typical call centers."

In his opinion, telephone bureaus at various levels and sizes, such as county bureaus, prefectural bureaus and provincial bureaus, must have relevant data, so he is talking about various typical telephone bureaus rather than core bureaus.

As for the means, that's simple. Send out a notice and have the operators in typical bureaus record the data carefully every day. Then, deduplicate data will be removed and counted. You will definitely be able to get the data within a month.

Gao Zhendong agreed to this arrangement, saying there was no need to rush.

"Well, thank you, General Manager Feng and all the comrades. Although these data cannot be obtained for the time being, some work can still be done first, so there will be no delay."

Mr. Feng and others were delighted when they heard his words. They had originally thought it would take a month to get started, but they didn't expect that they could still do something first and save time.

"Please ask Chief Engineer Gao to arrange it."

Gao Zhendong did not arrange the work first, but raised a question first.

"In my plan, there are three types of program-controlled switches: space-division switches, time-division switches, and digital switches. Which one do you want to choose?"

Gao Zhendong, who said this, felt as if he was asking, "Do you want this golden axe, this silver axe, or this iron axe?"

(End of this chapter)