Chapter 61: 100,000 Urgent, Important Computer Rooms Interrupted (2)
Cheng Yunli took advantage of Shi Lei's flashlight to test each power cord layer by layer with a three-purpose meter. Soon, Shi Lei sensitively noticed that Cheng Yunli tested all the positions with welding points, and there were many of these "points" on this rack. Among them, some are original to the manufacturer, and some are newly welded by the soldiers in the power supply room who are responsible for the installation.
When Cheng Yunli detected a solder joint of the power cord connected to the rack in the fourth row, she said to Shi Lei, "Company commander, you take a closer look." ”
"There's a glitch here!" Shi Lei took the flashlight and approached the newly soldered power cord that Cheng Yunli was referring to, and lowered his voice.
"Yes!" Cheng Yunli nodded slightly, and also lowered his voice, "The rack is grounded, and this burr will be connected to the rack at the moment of power-on, and the top discharge will appear, and then it will cause a short circuit, resulting in the rack never being powered on." Cheng Yunli explained in a low voice
Shi Lei's knowledge told herself that Cheng Yunli's analysis was very in place, and she pointed out the crux of the problem. Rack grounding is to ensure the safe operation of the equipment and prevent current leakage or accidental electric shock. However, the presence of burrs becomes a hidden danger.
When the device is powered up, the current tries to flow through all conductive paths. Due to the presence of the glitch, it becomes an unexpected discharge point at the moment of power-up. This top-end discharge, in which electrical energy is transferred from the high-voltage end through an air gap to the low-voltage or ground end, is a situation that needs to be avoided in electrical engineering.
Once a burr is discharged, current flows through it to the rack, and since the contact between the burr and the rack can be unstable, this discharge process can easily cause a short circuit. A short circuit can cause a sharp increase in the current in the circuit, and some of them may even far exceed the tolerance range of the equipment, which can damage the circuit or equipment, and even cause serious consequences such as fire.
Fortunately, the short circuit here only caused the failure of the rack to never add electricity. Because of the short circuit, the current cannot flow properly on the rack, and therefore cannot provide the required power to the equipment.
"I'm going to get a soldering iron!"
As he spoke, Shi Lei stood up and quickly took the soldering iron, solder, and power strip from the tool cabinet. Everyone's eyes moved as he moved, but no one spoke.
Wang Gong couldn't help but follow Shi Lei when he saw Shi Lei taking the soldering iron, but he didn't squeak, just squatted next to Cheng Yunli and Shi Lei very carefully.
"Cheng Gong, I'll weld!" Shi Lei whispered
"I solder, and the company commander has fewer soldering irons." Cheng Yunli simply refused, and at the same time tried the temperature of the soldering iron.
"Good!"
Shi Lei promised to focus the light of the flashlight on the "burr" of the solder joint, and soon Cheng Yunli finished the welding skillfully, and measured it again with a three-purpose meter, and then looked at Shi Lei and Wang Gong, "Power on!" ”
"Okay!" Without waiting for Shi Lei to speak, Wang Gong nodded in agreement,
Cheng Yunli stood up and pressed the first-level power button according to the program, normal!
Cheng Yunli pressed the secondary power button of a rack, normal!
......
Finally, Cheng Yunli pressed the fifth, that is, the secondary power button of the rack with "burrs", which is normal!
There was a slight vibration in the computer room, and although Cheng Yunli had her back to everyone, she could hear the sound of relief from people......
After the power-up of the program control machine was all normal, Cheng Yunli skillfully imported the bureau data. At this point, the relocation task of the program-controlled computer room is left with the distribution frame to adjust the audio cable, and the computer room and the external personnel cooperate to test the phone.
At the same time that Cheng Yunli was busy, Chief of Staff Wu and everyone quietly left the program-controlled computer room without knowing when. From beginning to end, Chief of Staff Wu did not say a word to anyone, his expression was solemn and complicated, and the two unit commanders who followed him were even more cautious. On the contrary, it was Staff Officer Song and Staff Officer Zhao of the Communications Section who looked a lot more relaxed, to be honest, they did secretly sweat for Cheng Yunli just now. You must know that if the relocation of the optical transceiver room is not smooth, there are circuits of other friendly neighboring stations as backup. The program-controlled computer room is a real "lonely"......
It's just that everyone doesn't know that Cheng Yunli at this time is actually sick. Yes, since yesterday, Cheng Yunli has had a fever, in order not to affect the relocation of the computer room tonight, she hurriedly went to the health team to see a doctor, the doctor said that there was no cold, and there was no pneumonia, it is estimated that it is because of the physical discomfort caused by fatigue and cold weather, so she was only prescribed some medicine for colds and fevers.
However, Cheng Yunli knew very well that since her father passed away, she had been suffering from a low-grade fever, and she did not go to the health team because she was busy preparing for the relocation of the computer room. This time, the body temperature suddenly rose, it should be excessive sadness, but it pressed the bottom of the heart, so that the sadness had nowhere to vent, and finally it was superimposed with the body's fatigue. Therefore, Cheng Yunli has already thought that when the relocation of the computer room is over, she must sleep for three days......
It was already two o'clock in the evening, and the barracks of the W Division were gently covered with a thick veil of mystery, and the wind and snow intertwined into a winter feast, quietly descending on this solemn and solemn land.
The sky, with its leaden gray clouds hanging low, seems to be nature's heaviest brushstrokes, outlining the infinite depth and vastness on the canvas of the night. The snowflakes, like thousands of feathers scattered in the sky, are light and dense, they spin and fall unhurriedly, and finally quietly merge into this camp embraced by the night. The wind, with a bit of chill and uninhibitedness, shuttled through every corner of the camp, sometimes whispering and singing, sometimes whistling, adding a bit of vividness and vitality to this quiet night.
The street lamps in the camp swayed in the wind and snow, and the dim halo was cut into mottled light and shadow by the snowflakes, projecting on the snow, forming a warm and hazy trajectory. The roof, the walls, the roads, and even every tree and blade of grass in the barracks were covered with snow, and the whole camp became pure and peaceful. Occasionally, a gust of wind blows, rolling up the snowflakes on the ground, forming bursts of fine snow mist, like a dreamlike scene, making people feel like they are in a fairy tale world away from the hustle and bustle.
"Company Commander Shi, your Cheng Gong's skills are too good, and you are very capable and calm in case of trouble. To be honest, I have been to many troops, and it is the first time I have seen such a skilled and capable female officer. Wang Gong said to Shi Lei, who had sent him, with obvious admiration in his tone.
"Wang Gong is really discerning!" Shi Lei looked at the sky and let out a long sigh.
"Company Commander Shi, I gave the super password to Cheng Gong, nothing will happen, right?" Wang Gong suddenly said this
"Don't worry, Cheng Gong knows how to measure." Shi Lei knows the importance of the super password, this password is the highest password for the maintenance of the program-controlled switch, only the head of a large military convergence bureau and the company have it, and it is absolutely not allowed to be handed over to the maintenance personnel of the lower bureau according to the regulations. Therefore, of course, Shi Lei would never have thought that Wang would tell Cheng Yunli this password. However, since he had already said it, Shi Lei had no choice but to appease him like this.
"That's good!" Wang Gong nodded, and then explained, "I'm just too excited, who will notice that glitch?" I really respect Cheng Gong too much, so I told her the password, thinking that it might be useful to her in the future. Cheng Gong didn't let me say it at the time, but I ......" Wang Gong smiled again with a little embarrassment
"Wang Gong rest assured, you just gave it, and Cheng Gong will not use it without authorization." Shi Lei once again appeased Wang Gong
"Hmmm! I know! Wang Gong paused for a moment, and then said, "Company Commander Shi, I saw that Cheng Gong was too busy just now, so I didn't say a word to her, please tell her goodbye on my behalf." Wang Gong looked at Shi Lei
"Okay, I'll bring it!" Shi Lei nodded, and then stopped talking.
In front of the communications building, a small Beijing jeep has been parked there. Shi Lei shook hands with Wang Gong and said goodbye, watched him get into the car, and watched the car disappear into the wind and snow at night.
Shi Lei turned around, looked at the communication building that was still brightly lit, and said to himself, "Farewell, communication building!" From now on, that person will never set foot here again! ”
Shi Lei was stunned for a while, then turned around and walked quickly towards the company dormitory building, which was also brightly lit. There, whether it is the optical terminal computer room or the switchboard room, the officers and men are still in full swing in the process of installation and opening......
Shi Lei passed through the process control room, and through the wide open door, he saw Cheng Yunli sitting in front of the microcomputer table, bowing his head to sort out the information. Shi Lei hesitated, but he didn't go in, so he walked straight to the optical terminal room......
Cheng Yunli finally finished sorting out the information, she raised her head, moved her neck, reached out to pick up the cup on the table, and drank the water slowly. Cheng Yunli touched her forehead, it was still very hot, but she ignored it because she was too busy in front. The program control room was very quiet, and Cheng Yunli didn't know that compared with the tense atmosphere of the optical terminal room and the switchboard room, the program control room at this time was like two time and space.
Cheng Yunli drank the water slowly, and at this moment, her mood was also very calm. Half an hour ago, Wang Jue called her from the distribution room, saying that all the lines from the program-controlled switch had been adjusted and the tests were normal. They began to adjust the user line, and the outside personnel also arrived at the junction box to cooperate with them to test the phone synchronously. Cheng Yunli understands that this means that the relocation of the equipment in the program-controlled computer room has come to an end, and tomorrow at least the phones of the W Division will be able to use normally. As for the telephones of other units, they are through trunk lines......
Trunk? Cheng Yunli's heart jumped violently, she put down the thermos cup, looked at the microcomputer, and quickly tapped the keyboard with both hands to enter the maintenance interface of the switch. Cheng Yunli carefully checked the operation of each relay board, and the results showed "Interrupt! “
Cheng immediately tracked the test relay signaling with a diagnostic program, which showed up as a line fault. Cheng Yunli understands that this means two points, either the equipment in the optical transceiver room has not been opened normally. Either it has been opened, but the cable connection has not yet been completed.
Cheng Yunli looked at the time on the microcomputer, it was already 3:50. According to the relocation plan, at this point in time, the fiber optic cables should have been fully connected. If this is the case, then the problem lies in the optical transceiver room. Don't......
Cheng Yunli suddenly realized that tonight, after the leaders opened the program control machine, they had never come again. Tao Renxian, the battalion commander who usually likes to be very picky, didn't hear him say a word. Shiller? After Shi Lei left the program-controlled computer room, he also did not come. Putting all of these together, is it not that the relocation of the transmission room is not smooth? What about the switchboard?
Cheng Yunli stood up, she wanted to go and see the situation. However, Cheng Yunli's head was dizzy, and she sat down heavily......
The switchboard room is next to the wiring room, because there are only two switchboards, and it is a computer-type service desk. Therefore, in the relocation plan, the attendant console is the first device to be relocated.
At the beginning, when Cheng Yunli formulated the relocation plan, he considered that the switchboard not only carried the telephone exchange of the command line, but also the communication backup of the automatic exchange of program control. Therefore, she is particularly attentive to the relocation of the switchboard room.
Cheng Yunli knew that Tian Yajuan was participating in the relocation and installation of the attendant console for the first time, and she had absolutely no experience, which was very clear from the switchboard relocation plan formulated by Tian Yajuan. For this reason, Shi Lei is not only worried, but also helpless. So, Cheng Yunli found Tian Yajuan and took her to reformulate the switchboard relocation plan, and also told her to pay attention to the following aspects:
First, detailed planning: formulate a detailed relocation plan, including timetable, division of labor, machine list, emergency plan, etc., especially pay attention to the dependency and interconnection lines of the two service stations.
Second, data backup and testing: Before the relocation, all important data should be fully backed up and restored to ensure the integrity and availability of the data. At the same time, the function of the two attendant stations was tested and the current operating status was recorded so that it could be quickly restored at the new site.
Third, the relocation process should be implemented step by step: first, pay attention to protect the equipment from physical damage, especially the precision electronic components and cable interfaces. The second is labeling and recording: all devices and cables are clearly marked, and detailed connection relationships and configuration information are recorded.
Fourth, the first is system commissioning: after the installation of the equipment, a comprehensive debugging and testing of the attendant station system is carried out to ensure the normal operation of the two attendant stations and the unimpeded communication network. The second is data recovery and verification: restore the backed up data to the new system and conduct verification tests to ensure the integrity and accuracy of the data.
Cheng Yunli also specially instructed Tian Yajuan to be flexible in restoring the call desk after the relocation. Because this is the first computerized attendant desk relocation, no one has ever experienced it. Therefore, after the attendant console is installed, do not rush to import the backup data. After checking, if the original data is not lost, you can skip the import and avoid other problems as much as possible.
For the sake of safety, Cheng Yunli also specially called the manufacturer of the attendant console to ask if the system data of the attendant console would be lost after the power was cut off. The manufacturer replied, "Not necessarily! “
So, Cheng Yunli repeatedly instructed Tian Yajuan to be cautious in importing data!
However, what Cheng Yunli was most worried about still happened......