It could be many things. 1  Gather facts. 2  Rule out equipment... 3  Back to gathering facts... 4  Call Comcast.  Good 1  luck. Have your problems always existed (with your current installation/configuration)?  When speaking with anyone...
A maximum-phase system is the opposite of a minimum phase system. A causal and stable LTI system is a maximum-phase system if its inverse is causal and unstable. That is, 1  The zeros of the discrete-time system are outside the unit circle.
Therefore the inverse of a minimum phase system is another minimum phase systemwhich is causal and stable.Recall the magnitude response of C (z)= H (z) H (1= z)of a system couldnât uniquely determine H (z).