Discuss in detail the subscriber loop systems, Computer Engineering

Assignment Help:

Discuss in detail the subscriber loop systems.

Subscriber Loop System: Every subscriber in a telephone network is linked usually to the nearest switching office by means of wire's dedicated pair. Subscriber loop seems as to this pair of wires. This is unwidely to run physically independent pairs from each subscriber premises to the exchange. This is far easier to lay cables having a number of pairs of wires for various geographical locations and run single pairs as needed by the subscriber premises.

2086_Cable Hierarchy For Subscriber Loops.png

FIG - Cable Hierarchy For Subscriber Loops.

MDF = main distribution frame; MF = main feeder; FP = feeder point; BF = branch feeder; DW = drop wires; DP = distribution point; DC = distribution cable

Usually four levels of cabling are used as demonstrated in figure. At the subscriber ending, the drop wires are obtained to a distribution point. The drop wires are the single pairs which run into the subscriber premises. The drop wires are associated to wire pairs in the distribution cables, at the distribution point. Several distribution cables from nearby geographical locations are terminated on a feeder point where they are linked to branch feeder cables that, in turn, are linked to the main feeder cable. This main feeder cables carry a larger number of wire pairs, classically 100 to 2000, than the distribution cables that carry typically 10-500 pairs. These feeder cables are terminated on a main distribution frame (MDF) at the exchange. The subscriber cable pairs emanating by the exchange are also terminated at the MDF.


Related Discussions:- Discuss in detail the subscriber loop systems

Finite automata, applications of context free grammar

applications of context free grammar

Show select tag and pull down lists, The next type of input is a Pull Down ...

The next type of input is a Pull Down List. With this type you have to employ in place of and it also has a closing tag. This control is used when we have a

Conversioin of the decimal number 82.67 into octal number , Conversioin of ...

Conversioin of the decimal number 82.67 into Octal number ? Ans. The binary equivalent is (1010010.10101011) 2 of decimal number 82.67. After that convert each 3-bit binary in

Mini project, give proper code for any kind of project in oop c++

give proper code for any kind of project in oop c++

Convert ascii code to its bcd equivalent, Convert ASCII code to its BCD equ...

Convert ASCII code to its BCD equivalent. This can be achieved by simply replacing bits in upper four bits of byte by four zeros. For illustration the ASCII '1' is 32h = 0010B. By

Which things should microprocessor validate, Q. Which things should micropr...

Q. Which things should microprocessor validate? A microprocessor should validate: Powerful addressing modes More addressing capability More throughput Po

Determine the level of state decomposition, Determine the level of state de...

Determine the level of state decomposition The level of state decomposition must be determined by judgement. A too fine grained model is unsuitable, such as, modelling all poss

What is meant by branch instruction, What is meant by branch instruction? ...

What is meant by branch instruction? A branch instruction is an instruction which changes the contents of the PC with the branch target address. This address is usually get by

Describe about remote-load latency problem, Q. Describe about Remote-load L...

Q. Describe about Remote-load Latency Problem? When one processor requires some remote loading of data from other nodes then processor has to wait for these two remote load ope

Convert, haw to convert context free grammar to regular grammar

haw to convert context free grammar to regular grammar

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd