The Application of Fiber to the Desk (FTTD)

As communication technology develops rapidly, the demand for higher bandwidth is increasing. To solve this problem, optical cable is widely used as the backbone of communications network cabling, especially in big data center. In recent years, projects like FTTH (Fiber to the Home) and FTTB (Fiber to the Building) are carried out to provide better services for customers. To future capitalize on the benefits of optical cable, Fiber to the Desk (FTTD) is recommended for enterprises, financial institutions and federal agencies, which need high security and high data transmission speed. This article will guide you to have a closer look at application of FTTD.


FTTD refers to the extension of the fiber optic infrastructure directly to user locations, just as the following figure show, optical cables are directly connected to desktops, laptops, or other communications equipment. FTTD can be used for virtual networks using thin clients and LAN networks with extended distances to workstations. It can satisfy the requirement for increasing bandwidth availability, moving large amounts of data at high transmission rates. In addition, it is able to bring service to locations where power is limited or unavailable as well as provide a more secure connection for organizations who are concerned about tapping or other security vulnerabilities.



We know that RI45 Ethernet cable can also be used as transmission media. What makes optical cable superior to RJ45 Ethernet cable? This part will show you the advantages of using optical cable for FTTD project.


Optical cable is immune to electromagnetic interference (EMI) and radio-frequency interference (RFI), so it is more difficult for hackers to tap on optical cable. Besides, optical cable uses light that is completely shielded, so hackers would have to physically splice into the line, which is difficult to do and easily detected. While RJ45 Ethernet cable emits electromagnetic signals which allows hackers to read data from nearby without physically touching the lines. In contrast, optical cable is a more secure option for applications concerned with data security.

Bandwidth And Distance

Optical cable is able to support higher data rates than any other cable type, with capacity to transmit up to 100 Gbit/s. As demand for higher bandwidth is ever-growing, optical cable has the absolute advantage. What’s more, connected with appropriate optics, the transmission distance of optical cable can reach dozen kilometers. Although higher grades of RJ45 Ethernet cables can transmit 10G data signals, they will only be able to do so over very short distances. Therefore, optical cable is the best choice for transporting higher speed and higher bandwidth signals over longer distances.

Lower Overall Cost

Optical cable used to be more expensive than RJ45 Ethernet cable. As demand has increased, manufacturing costs have dropped. Also, if properly designed, the FTTD project could be affordable. Apart from this, optical cable can ensure your network cabling can keep up with the growth in network traffic over time and upgrade your network to higher bandwidth in the future without recabling. Considering the cost of cabling, this can be a huge advantage. Though the initial cost of fiber equipment may be slightly higher than copper, the benefits realized can save organizations significant cost in the long term.

optical cable vs. RJ45 Ethernet cable

Optical cable Vs. RJ45 Ethernet cable


FTTD is a high-bandwidth solution that expands the traditional fiber backbone system by running fiber directly to desktops. FTTD is a horizontal wiring option that pushes the available bandwidth beyond 10G. It is an intriguing, underestimated and overlooked way to create a beneficial system that is expandable and performance-driven. The optical cable, fiber optic wall plate, PoE media converter and some other fiber optics used in FTTD are available in FS.COM. For more details, you can visit our site.

How to Choose the Right Switch for Your Data Center?

If you plan to set up a 10G network, what do you need? The answer is 10G switch, 10G transceiver and optical cable. In addition, the option of switch is the most basic and important step to start the network deployment. How to choose the right switch for your data center? This article will introduce the three-tiered network model which can help you make a right choice.

Basic Knowledge of Switch

Before we come to the three-tiered network model, let’s learn about some basic knowledge of switch. All switches maintain a media access control (MAC) address-to-port table which is used to intelligently forward frames out the right ports to the intended destinations. Besides, all switches use standards-based protocols to segment traffic using the concept of virtual local area networks, 802.1q trunks and 802.3ad port aggregation. They also prevent network loops using one of the many variants of the 802.1d spanning-tree protocol.

Three-Tiered Network Model

We know that different types of switches have their own characteristics. And we have to compare them before making the decision. Here is an easy way to look at these differences that we can break them up into traditional three-tiered network model. The three tiers are core tier, distribution tier and access tier. Core switches interconnect with other core switches and down to the distribution tier. The distribution tier sits in between the core and the access tier. The access tier connects the entire structure to end devices like computers, printers and servers. To better understand this, here is a figure for you.

The Three-Tiered Network Model

Core Switch

The most striking feature of core switch is speed. The task of a core switch is routing at Layer 3 (the network layer) and switching at Layer 2 (the data link layer). In addition, core switch is high-throughput, high-performance packet and frame mover, which simply moves packets and frames from one core switch to another core switch, and eventually down to the next tier of switches—the distribution tier.

Distribution Switch

The function of distribution switch is connecting the core and access tier together on the network. Since there are many interconnections in a network, and distribution switch has higher port density than core switch, distribution switch also interconnects all access tier switches. What’s more, distribution switch enforces all forms of network policies.

Access Switch

Access switch directly interacts with end-user devices and it connects the majority of devices to the network. For this reason, the access tier typically has the highest port density of all switch types. Also, access switch usually provides the lowest throughput-per-port of all switches. It commonly supports Power over Ethernet, which can power many endpoint devices, including wireless access points and security cameras. Additionally, access switch is better able to interact with endpoints from a security perspective.


Tasks and workloads can be distinct for switches in different tiers. While all switches share universal functions like MAC tables, spanning-tree and trunking, they also have exclusive capabilities performed only within that network tier. Therefore, you have to figure out what type of switch you need. Then, you can buy compatible optical module and cable. FS.COM provides cost-effective switcher, modules and cables for you. For more details, please visit our site.