Question

Describe the following access networks connected to your home: DSL, HFC, and FTTH.What are the advantages and dis-advantages of each?

Answer 1

Answer:-------------

1. DSL ( Digital Subscriber Line ) :---------------  Digital Subscriber Line (DSL, originally, digital subscriber loop) is a communication medium, which is used to transfer internet through copper wire telecommunication line.Along with cable internet, DSL is one of the most popular ways ISPs provide broadband internet access.

• Its aim is to maintain the high speed of the internet being transfered.
• If we ask that how we gonna achieve such thing i.e., both telephone and internet facility, then the answer is by using splitters or DSL filters.Basically, the use splitter is to splits the frequency and make sure that they can’t get interrupted.

DSL's Advantages:--------

• Independent services
• Security
• Integration
• High bandwidth
• Cheap line charges from the phone company.
• Good for "bursty" traffic patterns

DSL's Disadvantages:-----------

• No current standardization
• Expensive
• Distance dependence
• Limited availability
• Very new technology

2. HFC ( Hybrid Fiber Coaxial ) :----------- A hybrid fiber coaxial (HFC) network is a telecommunication technology in which optical fiber cable and coaxial cable are used in different portions of a network to carry broadband content (such as video, data, and voice). Using HFC, a local CATV company installs fiber optic cable from the cable head-end (distribution center) to serving nodes located close to business and residential users and from these nodes uses coaxial cable to individual businesses and homes.

An advantage of HFC is that some of the characteristics of fiber optic cable (high bandwidth and low noise and interference susceptibility) can be brought close to the user without having to replace the existing coaxial cable that is installed all the way to the home and business.

3. FTTH ( Fiber to the home ) :------- Fiber to the home (FTTH), also called "fiber to the premises" (FTTP), is the installation and use of optical fiber from a central point directly to individual buildings such as residences, apartment buildings and businesses to provide unprecedented high-speed Internet access. FTTH dramatically increases the connection speeds available to computer users compared with technologies now used in most places.

Advantages:--------

1. Internet Speed: One of the biggest advantages of FTTH is the improved internet speed. Internet is continuously becoming the backbone of most communications, around the world. Whether people want to stream videos, download files, or even have video-chats – internet speed is the deciding factor. By enhancing the internet speeds that people received, FTTH is making it possible for people to stay in touch. Moreover, an increasing number of people are working from home; and faster internet speeds help them stay connected at all times.

2. Technology: When we consider the traditional copper, they make use of analog lines that generate signal through the connected telephone device. As the description suggests, this technology is less defined, especially when you compare that with Fiber Optic.

3. Upcoming Applications: There are various new applications coming up for FTTH. Hence, by having FTTH – households stay connected with the latest in technology.

4. Vendors: It is easy to find vendors for Fiber to the Home, and that is another benefit of having this all new technology.

Dis-advantages:------------

1. The only disadvantage of having FTTH cable is the cost associated with having the cable and having it installed. Many households might not be able to afford the same. However, there is another concept called Fiber to the Premises (FTTP), which brings Fiber to a particular locality. That is cheaper to be installed as compared to Fiber to the Home (FTTH).

In short, FTTH cable is transforming the way we communicated in the past; and it will soon become the norm.