Introduction :
The CPF120A is a splitter module that has been specifically designed to implement the functionality of low pass filter in POTS over ADSL application at CPE side.Asymmetric Digital Subscriber Line (ADSL) technology  isdedicated , point to point , public network access technology that allow multiple forms of data , voice , and video to be carried over twisted-pair copper wire on the local loop between a network service provider ’ s(NSP ’ S) central office and the customer site or on local loops created either intra-building or intra-campus.