Main Distribution Frame ( MDF )
• The Main Distribution Frame is situated at the telephone exchange.
• It used to connect the customer ( phone user ) with the main switching system after passing through the cabinet.
• It used to connect the customer ( phone user ) with the main switching system after passing through the cabinet.
Cabinet
The cabinet's functions
• To save the usage of cable and replacing cable would be easier.
• To avoid the joint to be opened and this would save cost and time .
• To act as a place to perform maintenance checking.
• To upgrade the arrangement of lines.
• To test the phone line
• To execute the jumper process.
• To check the problem phone line.
• To cut the phone line manually.
• To connect the phone line manually .
• To avoid the joint to be opened and this would save cost and time .
• To act as a place to perform maintenance checking.
• To upgrade the arrangement of lines.
• To test the phone line
• To execute the jumper process.
• To check the problem phone line.
• To cut the phone line manually.
• To connect the phone line manually .
Distribution Point(DP)
• The DP Box's function is to make maintenance work and underground cabling easier.
• The DP box has 10 pairs
• But only 8 pairs are used and the others kept for testing work from DP Box to the main distributor.
• The DP box has 10 pairs
• But only 8 pairs are used and the others kept for testing work from DP Box to the main distributor.
Upper Cable
• The upper cable is used to make connection with the customers using the DP box.
• The two wire cable normally is used.
• The two wire cable normally is used.
Underground Cable
• The underground cable is connected to the cabinet from DP through man-holes.
• The underground cable will end at the telephone exchange.
• The underground cable will end at the telephone exchange.
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