Matrix Visionpro System Manual page 18

• Power supply for the system must be separate from other heavy electrical loads like air-conditioners,
heaters, welding machines, electrical motors, etc.
Terminating Trunk and Station Cables on the MDF
• Terminate the CO Trunk Line cables from the CO (public telephone exchange) into the 'Trunk Lines' side of
the MDF using the punch tool for Krone modules.
• Terminate all the telephone (station) cables (connected to the wall sockets/outlets) into the 'Station Lines'
side of the MDF using the punch tool for Krone modules.
• Label the trunk and station line cables for easy identification and keep a record of the trunk and station
lines in an editable format.
• Install Primary Protection Modules (PPM) with Gas Discharge Tubes (GDT) and fuses on entry points for
all trunk lines. This is to protect the system from heavy voltages from trunk lines and overhead stations.
The product warranty does not cover damages resulting from lack of primary protection on trunk lines.
• It is recommended that you also install Primary Protection Modules (PPM) with GDT and fuses on all
station lines, particularly off-premise stations.
For this, you are recommended to use the Primary Protection Module (PPM4) supplied by Matrix.
• A typical connection between a PBX and the MDF is illustrated in the figure below.
You are recommended to use the
connection scenario including the PPM, the MDF and the system along with station and trunk cables is shown
below.
Matrix VISIONPRO System Manual
"Primary Protection Module - PPM4" supplied by Matrix. A typical
12