Why Use a Patch Panel What is a patch panel used for?

What you need for a high-density patch panel.

Networks are constantly expanding, and so are the number of cables. Network racks are usually stored in the weak motor room (or the main wiring room and equipment room with security) in each building. However, the area of the computer room is fixed, with the continuous increase of cables, many network administrators are at a loss in the face of dense cable racks and limited computer room space.

It's a huge problem for users. And the solution to this problem is a method-based high-density wiring solution. First, from the design point of view.

There is a requirement for integrated wiring, I don't know if you have paid attention to it, that is, the information point requires data and voice points to be interchangeable when necessary, that is to say, the same voice point can be determined by the choice of jumper without changing the wiring. In this way, the voice point and the data point are the same when wiring, the design is very convenient, and there is no need to consider them separately, and the unified equipment can be used.

If cost is not an important consideration, connect all the information points to the RJ45 patch panel, and then use the jumper to decide whether to jump to the switch or the voice patch panel (which can be 110 or STG and other types of voice modules). Of course, this is a design that does not consider the cost, and it is also a design that does not consider whether the terminal is voice or data. Practical applications are still very rare.

In most cases, the difference between voice and data is still considered, and there are many ways to do this

Second, from the perspective of construction.

There are a lot of large-scale engineering information points, and the use of jumper connection between the switching equipment and the wiring system can make the construction management more convenient, and the cabinet will be very tidy, after all, the jumper is much shorter. The test 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 way to change the way the terminal is used.

Changsha Weipuxun Communication Technology specializes in the production and sales of distribution frames.

Patch panels can reduce EMI (electromagnetic interference) to some extent

The electromagnetic performance of a passive cabling system component can be determined by measuring the coupling of an equilibrium pair of input signals and the radiated signal of this pair, this parameter is called coupling attenuation, which applies to UTP, SCTP (FTP) and STP system components, coupling attenuation measures the isolation of a balanced pair from its electromagnetic environment. It essentially depends on the balance of the pair and the shielding effect of the shielding layer. In the case of using UTP, only the pair balance effect is actually counted.

The high-grade patch panel is not only easy to manage pairs, but also prevents crosstalk, increases the isolation space of pairs, and provides 360-degree pair isolation.

Purpose: Used for end-user lines or trunks, and can be provisioned and connected; Realize the cross-connection of two sub-systems of vertical trunk line and horizontal wiring; The positioning of the patch panel is the modularity of the management of the front-end information points at the central end. Early lapping.

Reason: The patch panel is a device used to manage. If there is no patch panel, the information points at the front end are directly connected to the switch, and if there is a problem with the cable, it will have to be rerouted.

In addition, the management is also chaotic, 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.

1. It is suspected that the link relationship between the patch panel and the jumper will be automatically detected in real time. As soon as two ports are connected, or if the two ports are disconnected, the system will detect them immediately, and the latency will be measured in seconds.

2. Automatically generate a database of detected link relationships in real time. The generated database needs to be generated in real time, even if the system loses power and all the database data is lost, and once the power is restored, the system can immediately re-scan the links of each port and generate a new database immediately.

3. Automatically update the database in real time according to the detected jumper changes. That is, as soon as someone jumps the wire, whether it is disconnected or connected, the system should immediately detect and update the database according to the link relationship just detected.

The purpose of the patch panel is mainly to manage the front-end information points at the central office for modular equipment.

As the terminal equipment of the optical fiber cable line, the optical fiber distribution frame should have several basic functions.

Fixed function: After the optical cable enters the frame of Senliang, the outer sheath and reinforcing core should be mechanically fixed.

Fusion splice function: After the optical fiber drawn from the optical cable is fused with the tail cable, the excess optical fiber is coiled and stored, and the fusion joint is protected.

Provisioning function: Plug the connector connected to the patch cable to the adapter and connect the optical path with the optical connector on the other side of the adapter.

Adapters and connectors should be able to be plugged and unplugged flexibly; The optical path can be freely configured and tested.

Patch panel function

1. Beautiful wiring

The online distribution frame will never move in the future, so the network cable does not need to have a margin, it can be just to the length of the distribution frame, and it looks good. If you go directly to the switch, you must leave a certain margin, and the cable is very inconvenient and unsightly.

2. Protect the device interface

Jumpers are convenient to protect switch ports (10,000 mating cycles).

If you need to change the key of the access switch to connect to the core G2 interface, unplug the core G1 interface and restart it and insert it into the G2 interface. Plug and unplug the interface directly on the device, which will seriously affect the life of the device interface. After the patch panel is introduced between switches, all interfaces on the device need to be plugged and unplugged without plugging and unplugging, and only the jumper interfaces on the patch panel need to be replaced.

As shown in the figure, you can reconnect the interface that was originally connected to G1 on the patch panel to the core switch G2. The patch panel interface is designed to be mated up to 10,000 times to protect the switch interface.

3. Management flexibility

For example, if an employee of a unit changes seats, it is enough to jumper on the patch panel; Or if you urgently need a network port, you can also directly connect the original voice distribution frame to the data distribution frame directly on the distribution frame, which is very flexible and convenient to manage.

I have never understood why there are so many patch panels in the computer room. How good is it for the two devices to be connected directly, why do you have to go through the patch panel in the middle? One more link, one more point of failure, isn't this an additional burden on yourself?

Recently, the computer room was relocated, and I gradually realized the benefits of the patch panel.

The first is the issue of construction. The construction of the computer room and the shelving of equipment are often completed by two teams at different times. That is to say, during the construction of the computer room, the specific equipment placement position and the connection relationship between the equipment cannot be accurately fixed, and you can only roughly know which cabinet the equipment is placed in, and the interface position cannot be fine.

Therefore, the first purpose of introducing the patch panel is to shield the uncertainty of this layer. In this way, the construction team of the computer room construction can only be responsible for connecting the cables between the distribution frames regardless of the connection relationship of the equipment, so that the length of the cable is fixed and it is easy to make it more beautiful.

Second, protect the core device interface. For example, if a core device such as a router or switch is frequently plugged and unplugged, the probability of interface damage will increase. The second benefit of using a patch panel is that we can just plug and unplug the wires on the patch panel, while the land-lift wiring from the patch panel to the core equipment remains fixed.

The cost of interface damage to the patch panel is much smaller than that of the core device interface. This is like sticking a film to a mobile phone, if the film is broken, guess it and tear it off and replace it with another one, which is much lower than the maintenance cost of the screen.

Third, it is convenient to locate the fault point. For example, the digital patch panel can clearly divide the fault into external fault and internal fault through self-looping, which narrows the scope of troubleshooting of fault points.

Patch panels. The role is 'crossing'. You can understand that the patch panel is a train turnout.

And each network cable is a railroad track, and if there are no switches, the train (data) can only go from A to B. With the presence of turnouts (patch panels), the turnouts can be pulled according to demand to make the train (data) go from A to B, to C, to E. That is to say, as long as you have a patch panel, you can use jumpers (pull turnouts) to make the data reach any node you want to reach in the weak current wiring system.

Although latte. The analogy is not very rigorous, but I think it can help you understand what it does.

Let's take your question, I take the RJ45 network patch panel as an example, and the 110 voice patch panel is the same.

1. Weak current does not pay attention to series or parallel, it only considers the logic port. If you insist on whether the network cable is connected to the wiring back in series or parallel, then it can only be said that it is connected in series.

The function of connecting the network cable to the patch panel is to integrate the line (rail) into the switch (crossing) system.

2. When the outdoor data cable enters the home, it must be connected to the distribution frame. The network cable is generally in accordance with the T568B wiring method, the 8-core network cable is connected to the IDC binding post of the distribution frame according to the color, and there will be a color mark card on the binding post, and the corresponding color of the core card can be connected according to the color code, and 110 wiring tools are required. , 50 pairs of large logarithms.

Cables can be used as outdoor home lines, but they are not the only ones. The function of connecting to the distribution frame is the same as in 1: the function of the network cable connected to the distribution frame is to incorporate this line (rail) into the turnout (crossing) system.

Addendum: Now if it is a network signal, optical fiber is mostly used.

If it is a voice signal, it is connected to the building switchboard with an outdoor large logarithmic cable car, rather than entering the house. Indoor cables are generally used in the home.

Take 25 pairs of cables as an example:

The main colors of the bonding are: white, red, black, yellow, and purple.

The secondary colors of the string are: blue, orange, green, brown, and gray.

When the line is lined, the main color is matched with the auxiliary color in order, such as: white blue, white orange, white green, white brown, white gray; Red-blue, red-orange.

Red-green, red-brown, red-gray; All the way to violet-blue, purple-orange, purple-green, purple-brown, purple-gray.

50 pairs of cables.

The sequence is the same as that of 25 pairs, except that there are two bundles of 25 pairs of cables.

It is to connect various devices to achieve the function of becoming a whole network!!