Chapter 833 CKJH-62-800
"Well, after I return home, I will suggest that the staff of our communications department contact you." The guest himself is not in this field, but that does not prevent him from making suggestions.

"Okay, you are always welcome to consult."

There is no high or low level of technology, what matters is whether it is useful.

"See? Although this technology looks simple, it has its practical uses." The Gaul did not forget to continue reminding his subordinates.

Just as he finished speaking, he saw something that even interested him.

It was a very small device, very small in size.

"I bet this must have used integrated circuit technology," said the Gaul.

There are few small and exquisite electronic products these days, especially when you see the introduction on the sign that it is a "remote switch type controller".

With control function, even if it is a simple switch type control without logic control, but when combined with "remote control", under normal circumstances the size will not be too small.

However, this thing in front of me is no different in size from the 15cm disk drive I saw earlier.

Considering the Orientals' leapfrog lead in integrated circuit technology, the Gauls naturally made this judgment.

They looked at the instructions of the device with great interest.

"Ha, this is a device that can remotely control the on and off of a switch via a telephone line. Its control distance is only limited by the telephone network."

"What? That is to say, there is no restriction in theory?" To ordinary people, this is the situation.

"No, no, no. Due to the limitations of the telephone network, its signal regeneration and relay functions are completed by the telephone network."

"But for ordinary people, there are no restrictions. The equipment of the telephone network is transparent and non-existent to them."

"Genius idea, exquisite technology!" exclaimed a Gaul.

“Importantly, it’s not expensive.”

Compared with other expensive remote control devices, although this thing is not cheap, it still seems like a free gift. After all, the "remote range" of other remote control devices may not even be able to break through a city, and requires the installation of expensive dedicated lines or other supporting facilities.

"Well, we can buy some to take back." A Gaul winked at his colleague.

Whether it is useful or not is not the point, but it is still necessary to buy some to disassemble. This kind of equipment has a wide range of uses.

"I don't quite understand the last part of the introduction. 'If it's paired with a push-button phone, you don't need to buy a control device and can control it directly through the phone.' What is a push-button phone?" Not only the Gauls were interested in this thing, but an old Russian next to them also raised a question.

"Maybe it's one of their new products. Comrades from the South have achieved a lot in this field recently." Another old Russian shook his head. He didn't understand either.

But whether they understand it or not, the Russians are very interested in this thing.

"Look what I see? I bet this device and the 'remote switch controller' just now must use the same technology. There is even such a device inside that controller." An old Russian looked at a small box next to him with great confidence.

"'Low-speed remote data transmission terminal', you're right, there must be one in that controller, 5 bytes per second, ha, what can it do?"

"It can do a lot of things, my Davari. Don't underestimate 5 bytes per second. It is enough for us to do a lot of things. Especially considering that its transmission distance is only limited by the telephone network." Another Russian looked at him seriously.

Slow, but far.

"Comrades in the South are simply crazy. This device is just a part of the remote controller, but it is more expensive than the remote controller." An old Russian complained.

"Hello, comrade. This data transmission terminal is a universal device that has been specially optimized to provide interfaces and communication control protocols. It can be used in all low-speed data transmission situations. When there is no telephone network, a pair of devices can be directly connected and transmitted within a certain distance."

Our staff answered his questions promptly. In a nutshell, it is a bit expensive, but worth it.

"They even have automatic dialing and automatic transmission. It looks just like a modem, but it's much slower and more expensive!"

"Because a modem requires a computer to work, and this one doesn't, comrade." Our staff was very patient. It is more expensive than a modem, but isn't it much cheaper than a modem + computer?

Although the Russians complained, they acted quickly and ordered a large number of products, including remote switch controllers. These products are really useful. Their behavior is called "only those who complain about the goods are the buyers" according to the old saying.

The Gauls were not to be outdone and also placed orders for a lot.

It is certain that they all have some plans in mind, besides using it.

The Russian placed an order and pointed to the introduction information of the low-speed data communication terminal and asked our staff.

"Davri, what is the 'CKJH-62' mentioned here?"

It is clearly stated there that if you want to achieve automatic dialing and automatic transmission on the telephone network, a prerequisite is that the switching equipment of the telephone network must be this thing.

Our staff member took one look, turned around with a smile, and pointed to a device inside: "That's it, a program-controlled telephone exchange."

Program-controlled telephone exchanges? The Russians and Gauls immediately became interested.

The Gauls are now mainly using vertical and horizontal switches. Their latest one is the 5B vertical and horizontal switch with a capacity of 1000 ports, which was installed in the 60s, and the CP1 vertical and horizontal switch with a maximum capacity of 400 ports, both of which are the latest equipment.

As for the Russians... they are weaker. They mainly use the old-fashioned rotary and lifting system of switchboards, which are one generation earlier than the vertical and horizontal system.

But what is a program-controlled switch? I've never heard of it.

In this regard, the Gauls were an absolutely high-level country in terms of overall technical level, but even they had never heard of this thing, let alone the Russians.

"Davali, I remember you once copied our 47-type long-distance telephone exchange, and I also participated in related support work. Is this program-controlled exchange related to it?" An old Russian was indeed an old expert with rich experience. The old Russian 47-type exchange was directly called a "switching office", and you can imagine how stupid and crude it was.

"Ah, dear old comrade, thank you very much for your help." Our staff were very enthusiastic when they heard this. This is a real comrade! We must thank him.

After expressing gratitude, our staff said, "But this switch has little to do with the Model 47 replica. This is the latest program-controlled switch, and the core of the control is software control. The difference is very big."

To be honest, even though this staff member is a professional, he doesn't know the details of the Type 47 exchange.

"Ah, that's it. Congratulations on having found your own path. Are there any inheritances between the relays and the Type 47?" The old Russian was still very pleased. At this moment, he felt a little like seeing his students find their own academic paths.

"No, respected old comrade, the relays of the Type 47 switch are too sophisticated, large and expensive, making it difficult for us to use them. The relays here are all reed relays that we developed ourselves, which are smaller and have better other parameters." Among the staff here are comrades from the Communications Institute of the Postal and Communications Commission. After all, this stuff is extremely professional, and if they are not here, ordinary people simply cannot handle it.

This made the old Russian expert feel a little disappointed. The control core had changed, the control components had changed, and there was nothing left of the switch. It seemed that these former students had indeed taken a completely different path.

"Can you introduce this program-controlled switch to me?" he asked. At this time, the Gauls were just listening on the side. The Russians had acquaintances here, so they could just ask for help.

"Good comrade..." Our staff was very enthusiastic. We should be enthusiastic to guests, especially this is an old comrade who has helped us.

"First, this CKJH-62-800 you see is an 800-port switch..."

The opening remarks surprised both the Russians and the Gallics.

Just a nod is an 800-port switch? Especially the Russians, they couldn't believe it.

The reason why the control switches, whether they are rotary, lifting, rotary lifting or vertical and horizontal systems, are called control switches is that their switching logic is realized by mechanical or electromechanical combination, but mainly mechanical, especially the first three types.

From a technical perspective, it can be said that it is full of mechanical beauty and extremely exquisite. However, from a practical perspective, using machinery to realize the exchange logic, just think about the size, weight, design, and complexity. It's enough to make you cry.

Most of these switches actually rely on machinery to send the connector to where it needs to be connected. The rotation, lifting and so on refer to the movement of the connector.

These methods involve mechanical motion, which naturally results in slow speed, high wear, high noise, and large size...

Of course, the communication technicians did not sit idly by, and they later came up with a new thing, a full relay system, which connected all the incoming and outgoing lines with a cross matrix. It seemed that there were no such problems as the ones mentioned above, but there was a new problem: this thing could not be used for large-scale switching at all.

A simple calculation will show that a switch with a capacity of 100 incoming lines and 100 outgoing lines will require 100*100=10000 relays, which is simply not achievable on a large scale.

Then the ultimate answer to the distributed control switch appeared - the vertical and horizontal switch.

(End of this chapter)