A method and apparatus are provided for sensing current in a subscriber
line. The method includes receiving a current signal from a driver capable
of driving the current signal on the subscriber line, and generating a
second signal in response to receiving the current signal, wherein the
second signal is proportional to the current signal. The method includes
receiving at least a portion of the current signal from a driver capable
of sinking the portion of the current signal from the subscriber line, and
generating a third signal in response to receiving at least the portion of
the current signal, wherein the third signal is proportional to the
portion of the current signal. The method further includes adding the
second signal and the third signal to generate an output signal.
