4.  Insert and fasten the male connector to the female 50-pin Telco connector on the  
MP-124 rear panel (labeled Analog FXS Lines 1-24). 
5.  Connect the telephone lines from the MDF adaptor block to a fax machine, modem, or 
telephones by inserting each RJ-11 connector on the 2-wire line cords of the POTS 
phones into the RJ-11 sockets on the front of an MDF adaptor block, as shown in the 
figure below. 
Figure  3-10: MP-124 in a 19-inch Rack with MDF Adaptor