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Copper network in last mile is difficult to maintain because of following reasons ::

a)     during cable cuts it is tedious to make joints

b)     leakage current in copper network leads to CROSS-TALKS

c)      upgradation of existing network is costly

d)     demand of higher bandwidth in last mile for data

To overcome above problems of copper network and to increase reliability of telecom network in last mile , concept of DLC was introduced in early 90’s.

DLC can be taken as a part of switch which is taken from central switch location  to  subscribers location.

To understand this concept , let us take an example ::

In city X , we need to connect subscribers at location A & location B

Old copper network will be having switch at central location which is 4-5 kms from locations A & B

In DLC , we will cut switch in 03 parts…01 part to remain at central location, remaining 02 parts will be taken to any place which is 1 kms from location A & location B

Subscribers will be connected to these parts of switches with copper network, thus reducing copper length in last mile from 5kms to 1kms ( as shown in above diagram )

 All 03 parts of switches will be connected using optical fiber  in ring topology with self-healing

 For detailed information , please contact :: vsaxena69@hotmail.com