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Melontel, one of the leading Chinese communication equipment manufacturers, is here today. This article will cover definitions, applications, specifications, and benefits, among other things. Continue reading to learn more.

optical fiber distribution frame


Your Professional Optical Fiber Distribution Frame Manufacturer

What is an optical fiber distribution frame?

optical fiber distribution frame

The optical fiber distribution frame plays an essential role in the current communication network.

The optical distribution frame is used to terminate and distribute the central office trunk optical cables in the process for communication system construction and network connectivity.

It can be used between optical communication equipment and optical cables. Wiring between devices.

The odf optical distribution frame is flexible enough to connect equipment and equipment, equipment, and optical cables. It also serves the purpose of scheduling and allocating fiber core resources, as well as fixing and protecting optical cable.

Mechanical moving components

Mechanical moving parts must be easy to install, maintain, and rotate. The door’s opening angle should not exceed 110deg and the gap between the two should not exceed 3mm.

Radius of the incoming optical cable

The bending radius of an incoming optical cable should not exceed 15 times its diameter when it enters the rack.

Rack structure

The structure must be strong, the assembly must be consistent, interchangeable and free from loose fasteners. Round edges should be used for exposed or manipulated areas.

Protective sleeves, gaskets and bending radius for fiber core and pigtail

Protective cover and gasket must be placed when the optical fiber of an optical cable passes through the hole in the plate. The radius of curvature must not be smaller than 30mm, regardless of where the fiber core or pigtail is bent.

The surface of the rack

The coating layer must have a smooth, uniform surface and color. There should also be no exposed bottom.

Text, graphics, symbols and signs on structural devices

Text, graphics, symbols, and signs for the structural device must be clear, precise, and complete.

Keep on reading:Fiber Optic Patch Cords

How Many types of optical distribution frame?

There are three types of optical fiber distribution frames: open, semi-closed, and closed. The odf optical distribution frame can be broken down into three parts depending on the use scenario: the optical odf for the cell fiber box distribution, the distribution frames of the wireless base stations distribution and the transmission area. Distribution frame, mixed distribution frames and other types.

The odf optical distribution frame structure allows it to be broken down into

Closed optical fiber distribution frame generally refers to ODF’s front, north, and side. Panels or doors are used to install ODF with doors or panels.

Semi-enclosed fiber optical distribution frame. This means that the front or rear part of the frame is exposed and the sides are generally closed.

The front is left completely exposed in an open fiber distribution frame.

It can be subdivided according to the rack operation mode into:

Fully front-operated optical fiberdistribution frame. This generally refers to ODF’s front-side operation.

Double-sided operation fiber distribution frames refer to operation from either the front or the back of ODF.

Depending on the functional composition of your rack, you can divide it into:

Generally, an ordinary optical fiber distribution frame refers to the structure of an individual rack.

A combined fiber optic distribution frame is a combination of two or more racks and wiring channels.

It is distinguished primarily by the diameter of the cores that carry the optical cables. The optical fiber distribution frame can be divided according to how many cores each one carries. This is typically 144 cores or 288 cores.

The rack height can be divided into three groups: 2600mm, 2200mm, and 2000mm. Its width should be an integer multiple 120mm. Its depth should be 300mm, 600mm, or 450mm.

The frame dimensions must not be deviated by more than +-2mm. The verticality tolerance between the outer surface and the bottom reference plane should not exceed 3mm.

What are the drawbacks of ODF?

Optical cable is an essential part of modern communication. This has been made possible by the construction of large-scale all-optical networks in the early stages. Traditional DDF optical distribution frame has also grown in importance to connect optical cable and equipment.

The shortcomings of using traditional optical odf extensively are slowly being exposed with the advancements in traditional telecom operations services like wireless networking, home broadband and group private lines as well as emerging 5G service offerings.

optical fiber distribution frame

There is limited space in the computer room

Access layer optical cables and aggregation layers optical cables are often connected to the appropriate communication equipment rooms. This increases optical odf ends demand and optical cable carrying capacity in computer rooms at all levels. Additionally, the number of odf optical distribution frame optical jumpers connecting to corresponding equipment is increasing. optical odf racks in computer rooms have the issues of limited space, low capacity and a single function. This eventually leads to tight spaces in transmission and data equipment rooms and congestion of fiber jumper channels.

Multi-device connectivity and multi-service concurrency are the norm in 5G network construction. The existing equipment room space is no longer sufficient to accommodate the network construction requirements of multiple types of equipment and ODF racks.

Complexity in operation and maintenance

Comparable to previous mobile communication technology upgrades the O&M era will see changes in network standards, business operations, and a complete upgrade of network O&M techniques. Traditional optical odf only perform the basic tasks of terminating optical cable and connecting equipment.

The number of users connected to the network and the scope of operation has led to a multiplication of optical fibers.

Mixed connection of data devices at different network level on the odf optical distribution frame side leads to unclear optical path levels. This includes the backbone fibers in the cell, important group fibers and surrounding base stations fibers. Cable management can be very difficult. Side faults can make it difficult to identify the faulty cables or ports the first time. This puts a lot of pressure on the network operations and maintenance.

Poor Resource Accuracy

The new era of operation and maintenance has seen unprecedented network integration, with the content of services and terminals continuing to diversify. There are many new applications that emerge daily, and this requires a higher level of resource accuracy in the back-end network.

Traditional ODF doesn’t divide the passive integrated wiring and active equipment areas, lacks unified planning and labeling, and the locations can be quite scattered.

The principle of proximity is used for the connection and setting of the original ODF. Sometimes, the actual construction and maintenance of engineering can be hampered by inaccurate resources on site, which could pose hidden risks to the reliability and security of the network.

What are the main uses of optical fiber distribution frames for optical fiber?

optical fiber distribution frame

It is essential to plan the layout of the optical fiber distribution frames, optical cables, and pigtails within the equipment area in order to create a space-efficient layout. This will solve the three main problems of equipment room space, operation difficulty, resource accuracy, and resource accuracy. The following requirements must be met in order to divide the application scenarios within a general communication area.

(1) Before you use the optical fiber distribution frame, it is important to consider the area division of power supply, equipment, and MODF rack areas, clarify the scene classification, and realize the central and separate placements of the MODF Rack, in order to efficiently move the equipment space. This will lay the foundation for unified deployment, and utilization.

(2) It is important to take into account the environment and previous layouts when installing the optical fiber distribution frames. The columns are arranged in the same column which makes it easy to place fiber jumpers and saves resources.

(3) The optical fiber distribution frame should not be placed too close to the side of optical cable that enters the equipment room. This will allow for the use of old optical cables and pigtail channels, as well as reduce construction cost and investment.

Equipments (OLTs), which have a lot of user accesses such as FTTx access networks or cell resident networks, should reserve a certain amount of pigtails to meet future user development. This will allow for optimization and expansion of the network in later stages.

What is the composition of an optical fiber distribution frame?

ODF is an ordinary ODF that includes a rack, optical cable entry unit and grounding unit and optical fiber termination unit. It also includes a wiring unit and optical fiber active connector. Optionally, it may include an optical splitter and other accessories. Each unit can be either an independent unit or integrated.

The ODF combined is made up of the following: wiring channel, termination and distribution sub-racks, optical fiber active connectors, optical splitter (optional), and spare accessories. Each component may be used separately or integrated.

What material is used for the optical fiber distribution frame?

optical fiber distribution frame

All ODF materials should have anticorrosion properties. If the material does not have these properties, it should still be treated with anticorrosion.

It should have the same physical and chemical properties as pigtail jackets and cable jackets. These materials must be compatible with other materials in order to prevent corrosion and damage.

All metal structural parts treated with odf optical distribution frame surface electroplating shall be subjected a 4″i salt-spray test in accordance with the salt spray method of GB2423.17-2008. There shall not be any visible spots.

Good adhesion should be achieved between the substrate and the coated metal structure.

After the test, the combustion performance of odf optical distribution frame non-metallic parts and optical fiberconnectors must meet the following conditions:

a) The test specimen did not ignite.

b) The flame-burning time of the test specimen does not exceed 10 seconds after it has been removed from the fire. c) The flame or the glowing particles falling from test samples does not spread the combustion into the layer below the sample.

What is the main purpose of the optical fiber distribution frame work?

Data entry, protection and fixation functions

Ordinary optical odf requires an optical cable entry unit and a grounding unit. These are the functions of the unit:

a) Install the optical cable onto the rack to protect it and the fiber core from damage.

b) The fiber core is removed from the optical cable. It is protected by a device that is then fixed to the optical fiber termination unit.

C) The optical cable’s metal end is protected from the frame.

d) The high-voltage protective grounding should be connected to the metal sheath of the fixed optical cables and the reinforcing core.

The combined ODF shall require that the termination subrack has the following functions.

Fiber termination function

Common ODF should include an optical fiber termination unit. It should be easy to operate, construct, install, maintain, and repair the optical fiber core or pigtail. The combined ODF will require the termination subrack to perform the above functions.

Line adjustment

Ordinary ODFs should have vertical wiring channels within the rack. Through the fiber optic connector plug the fiber core serial numbers in the optical cable can quickly and easily be scheduled. The routing sequence can also be changed.

The combined ODF should have both vertical and horizontal wiring channels within the rack. The active optical fiber connector plug allows for quick and easy adjustment of the core serial number within the optical cable and can also allow for the modification of the optical transmission system. To enable flexible fiber jumper between subracks.


Each rack and each unit’s capacity (determined by the number and type of adapters) should have been specified in the enterprise standard. The optical fiber termination unit and storage unit, as well as the optical fiber distribution and distribution units, should all be set up within the full range of capacity.

The combined ODF should include the termination subframe, distribution subframe, horizontal wiring channel and vertical wiring channel.

The identification record function

Racks and units must have complete identification and recording device for easy identification of fiber core serial numbers or transmission path sequences. The recording devices should also be simple to modify and replace.

Optical fiberstorage function

The rack and unit should have enough space to store any remaining fibers.

Installation of and connection to optical splitter (optional)

The equipment must be able to connect with the optical divider and should provide space for it.

For optical fiber distribution frames, there are pressure protection requirements

optical fiber distribution frame

The rack’s high-voltage protection grounding device should be capable of being grounded reliably. There should also be clear grounding marks at the grounding spot.

The rack’s high-voltage protection grounding device is connected to the metal reinforcing center and the metal sheath in an optical cable. The cross-sectional area for the connecting wire must not be smaller than 6mm2.

The connecting terminal connecting to the rack’s high-voltage protective groundeding unit must not have a cross-section less than 35mm2.

The rack’s high-voltage protective grounding device is insulated. It is less than 1000MQ/500V (DC).

The resist voltage between the rack’s high-voltage protection grounding device and the rack is not lower than 3000V (DC/min), and there is no breakdown nor arcing.

Fiber active connector testing

Connect the standard fiber patch using the dotted line (SiR2) and adjust the optical powers so that ODB is achieved (use the set key 0). Connect the fiber to be tested according to the solid line. The measured optical power value corresponds to the insertion loss value at the R1 end. The corresponding insertion value for the other end can also be measured if the fiber jumper direction is reversed.

Mechanical durability

optical fiber distribution frame

Insert the plug from the other party and pull it out. Do this 500 times. The average of five data should be taken. There shall not be any mechanical damage or obvious scratches to the pins after the test.

Packaging requirements for optical fiberdistribution frames

The odf optical distribution frame should have a logo that indicates the product model, brand, trademark, production unit and date of manufacture.

The trademark or manufacturer’s mark should be on the connector of the optical odf.

The packaging box must contain the product and the following items. These can be placed in paper bags or plastic bags.

a) Use accessories and special tools to prepare for the occasion

b) Product Instruction Manual

C) Product Certificate

d) Packing list.

How do you transport the optical fiberdistribution frame?

ODF can be shipped by train, ship or plane once it has been packaged. Avoid collisions, drops and direct sunlight exposure during transportation.

How do you store ODF?

optical fiber distribution frame

ODF should be stored in a dry, well-ventilated warehouse. There should not be any corrosiveness around it. The temperature should be between -25 and +55 degrees Celsius, and the relative humidity no higher than 93%RH.

What is the difference between patch panel and optical fiber distribution frame?

ODF should be stored in a dry, well-ventilated warehouse. There should not be any corrosiveness around it. The temperature should be between -25 and +55 degrees Celsius, and the relative humidity no higher than 93%RH.

Different uses

a. Odf optical distribution frame: It protects the optical fiber core, pigtail and can be assembled into a cabinet/rack. You can either put it in an optical fiber distribution frame by itself or you can install it in a cabinet/rack with the digital distribution and audio distribution units.

Create an integrated distribution frame. It is easy to use and configure, flexible and simple to install. It is indispensable for fiber optic communication cables network terminals or relay points to achieve fiber arrangement and fiber jumper cable connection.

b. The patch panel: This is the point where the feeder optic cable and distribution optic cables meet. The optical splitter transmits the light beam from one fiber core to multiple fibers via the physical channel. This is done to increase the utilization efficiency and decrease the logarithms of trunk fiber.

Different scope of application

a. ODF distribution frame. It is essential in the information room and serves as a part of the optical cable fixing and protection, the optical cable termination function and the line adjustment function.

b. Patch panel: This patch panel is used to connect optical cables and can be used for testing or maintenance.

What are the features of the light front optical distribution frame?

optical fiber distribution frame

1. The optical fiber distribution frame has a drawer structure that can be pulled out and put back after it is completed.

2. Galvanizing cold-rolled steel plates and applying surface spraying are two processes. The optical fiber distribution frame uses the doped olefinic spray shrink material. It is lightweight, flexible, and long-lasting. Function allows the user to choose how many units or how many flanges they need.

3. Modular design: Standard 19-inch, each module and the unit body can be removed separately. This allows for flexibility and expansion.

4. Easy to upgrade: This odf optical distribution frame can be used as an optical odf traditional, but can seamlessly add intelligent fiber management functions.

5. Simple operation and maintenance: The clear and independent functional partitions make it easy to operate and maintain. Cross-connection is achieved through fiber jumpers. The fiber routing is transparent and convenient. The surface operation supports both front and back, left and right wall installation, as well as cabinet and left and right wall installation.

What’s the purpose of the optical fiber distribution frame?

The optical fiber distribution frame can fix optical fiber patches cords once they have entered the rack. It can also fix the outer sheath or reinforcing core mechanically to protect them from mechanical damage.

The optical distribution frame uses a box-shaped structure which optimizes cable management and saves space.

Pre-terminated high-density optical fiber distribution frames can improve network performance and make it reliable and scalable.

Fiber distribution frames can be used to quickly and easily deploy high-density cross-connect and interconnections in data centers. They also simplify cabling deployment and increase cabling density. This makes cabling flexible and reduces cabling failures.