ILEC Testing using Test Access Matrix (TAM)

 

ILEC - Test out to Customer

The line circuit is switched to the Test Head or test equipment by the TAM. Once the customers line has been diverted the Test Head can carry out a series of tests to determine if a fault exists on the copper path.

Basic tests such as resistance, voltage etc can be carried out and the results returned to the requester. The Customer service centre or fault centre can see quickly if a fault exists.

A more detailed overview of Test Heads can be found here.

 

Move mouse over diagram to see path under test>

ILEC Test out to Customer

 

ILEC - Test in to Exchange

Once the circuit is switched to the Test Head the customer service engineer can also look into the Exchange.The conditions are different on this side of the connection. The engineer would expect to see -50V dc and hear dial tone, this would prove the POTS is working okay. A Golden Modem can the be connected to test the DSLAM output. If the DSLAM port is working okay the Goldem Modem will detect the correct signals and interact with the switch.

The ILEC has proved the fault to be with the ISP or a fault in the line to the customer.

 

 

Move mouse over diagram to see path under test>

ILEC Test in to Exchange

 

One of the main suppliers of Test Access Matrix (TAM) is United Technologists Europe Limited (UTEL). Providing over 20 Million lines of Test Access Switch Matrix (TASM) to Europes leading telecommunication providers. The TAMS come in a variety of styles and sizes, some custom designed for a specific purpose or to fit into a very specific location.  

 DSLAM Specific TAM / TASM Rack Mounted TAM  Handover Rack TAM / TASM
TAM / TASM made to fit a specific DSLAM  Rack Mounted TAM / TASM Handover Rack TAM / TASM

Photos courtesy of UTEL