When it comes to the construction of weak current projects, the word wiring is naturally inevitable. In weak current wiring, in addition to mastering wiring skills, we also need to have a clear understanding of accessories. For example, what is a patch panel? Why use a patch panel? Let's go to find out together.
What is a patch panel
Equipment used for end-user lines or trunks and capable of provisioning and connecting them. The patch panel is the most important component in the management subsystem, and it is the hub to realize the cross-connection of the two subsystems of the vertical trunk line and the horizontal wiring. Patch panels are usually mounted on a cabinet or wall. By installing accessories, the patch panel can meet the needs of UTP, STP, coaxial cable, optical fiber, audio and video. Distribution frames commonly used in network engineering include twisted pair distribution frames and optical fiber distribution frames. According to different places of use and uses, it is divided into two categories: main distribution frame and intermediate distribution frame.
use
The positioning of the distribution frame is a modular device that manages the front-end information points at the central office. The front-end information point cable (Category 5e or Category 6 cable) enters the equipment room firstly into the patch panel, attach the cable to the module of the patch panel, and then connect the patch panel and the switch with a jumper (RJ45 interface). .
Generally speaking, the patch panel is used to manage the equipment. For example, if there is no patch panel, the front-end information point is directly connected to the switch. If there is a problem with the cable, it will be re-wired. In addition, the management is also confusing, and multiple plugging and unplugging may cause damage to the switch port. The existence of the patch panel solves this problem, and better management can be achieved by replacing the jumper.
Usage and usage are mainly configured according to the total number of network points or the number of network points on the floor (and adjacent floors, depending on how the system diagram is designed). Different buildings, different system designs, the distribution frame between the main equipment will be different.
For example, if a building has only four floors, the main equipment room is set on the first floor, and the network points on all floors enter the equipment room, then the number of patch panels is equal to the number of all network points/distribution frame ports in the building (24 port, 48 ports, etc.), and add a certain margin; if a building has 9 floors and the main equipment room is set on the 4th floor, in order to avoid excessively long cables, it is possible to have sub-equipment rooms on each floor , and there is a switching device. Then the patch panel between the main equipment is equal to the number of network points on the 4th floor/the number of patch panel ports (24 ports, 48 ports, etc.).
The patch panel is the most important component in the management subsystem, and it is the hub to realize the cross-connection of the two subsystems of the vertical trunk line and the horizontal wiring. Patch panels are usually mounted on a cabinet or wall. By installing accessories, the patch panel can meet the needs of UTP, STP, coaxial cable, optical fiber, audio and video. Distribution frames commonly used in network engineering include twisted pair distribution frames and optical distribution frames.
Why use a patch panel
1. From the design point of view
There is one requirement for integrated wiring, I don't know if you have noticed it, that is, the information point requires that the data and voice points can be interchanged when necessary, that is to say, the same voice point can be selected by jumper without changing the wiring. Determine whether it is voice or data. In this way, the voice point and the data point are the same when wiring, and the design is very convenient, and there is no need to consider them separately.
If the cost is not an important consideration, connect all the information points to the rj45 patch panel, and then decide whether to jump to the switch or the voice patch panel through the jumper (it can be 110 or stg and other types on the voice module). Of course, this is a design that does not consider cost, and it is also a design that completely does not consider whether the terminal is voice or data. There are very few practical applications. In most cases, the difference between voice and data is considered, and there are many specific methods.
2. From the perspective of construction
There are many large-scale engineering information points. The use of jumper connection between the switching equipment and the wiring system can make construction management more convenient, and the cabinet will be very clean. After all, the jumper is much shorter. Testing is also much easier.
3. Management and maintenance
In fact, large users are very concerned about this aspect, and the patch panel can effectively improve work efficiency and reduce the time for error checking. It also provides a convenient and quick method for changing the usage mode of the terminal.
What are the advantages of patch panels
1. The traditional method of testing subscriber lines is done by manual operation. After adopting the centralized online method, the existing automatic test system can be used to test the subscriber lines of the remote office, so as to realize unattended or less-attended operation.
2. The computer operation can be combined with the computer integrated management system to realize the automation of operation.
3. Centralized online can choose the shortest path to the nearest jumper, only 2-3m, saving a lot of jumpers. The traditional method of jumper is generally more than ten meters, or even dozens of meters.
4. In the case of machine relocation, number change and engineering reversal, the traditional method needs to remove a large number of jumpers, which is a heavy work. The card contacts of the patch panel will be loose after many times of card connection. The centralized on-line method can be completed only by computer operation, which reduces the wear of the card contacts, prolongs the life of the patch panel, and reduces the occurrence of obstacles.
5. The patch panel jumper is completed in a centralized way, which avoids the confusion caused by multiple random jumpers in the traditional method, and makes the patch panel appearance beautiful and neat.
The above is all about what a patch panel is and why you should use a patch panel. In fact, a patch panel is a device used to standardize network wiring, generally used in network installations (such as local area networks, etc.). , used in conjunction with the switch and installed in the cabinet.
