ADSL is a typical form of a DSL line that performs a function of faster data transmission through the copper wires as compared with a regular modem. It uses the frequencies that are not used by a telephone call and perform its function. The splitter allows a single connection to be utilized for ADSL as well as for voice calls. ADSL can be distributed at smaller distances from the main office. Usually this distance is around 4 km but can be extended to 8 km.

The basic difference between a DSL and an ADSL is that the data transfer is in much larger amount in a single direction as compared with the DSL. Mostly ADSL is offered to the customers due to some important technical reasons. Mostly home users prefer to have a high download speed so DSL usually has lots of traffic at the DSLAM where upload speed and download speed are almost same so to overcome this technical issue most companies prefer ADSL for their customers.

Following are the some major installation issues that need to be looked over before installing it:

1. Appropriate filters should be present at the customer premises so that there is proper filtration of voice service and at the same time it makes sure to separate signal for the ADSL.

2. DSL requires some sort of micro splitters to be installed at different points thus making it very costly.

3. The signals can be de graded by other devices also.

Most of the ADSL connections are of full-duplex. Usually there are two sorts of communications going through an ADSL one is the upward communication and the other one is the downward communication. Each of these is than further divided into smaller frequencies known as bins. It is the DSL modem that will make sure how to exploit the bins. ADSL is used now days mainly at smaller distances and are becoming popular regarding the technical as well as marketing aspect.