[comp.dcom.telecom] Two Wire to In and Out Line Signals

Ashley Salisbury <ans@cs.city.ac.uk> (04/05/91)

Does anyone have details of a simple circuit to convert from a
standard two wire telephone current loop circuit to a pair of
connections for signal in and signal out ... hopefully with a
reasonable degree of feed through cancellation ... ie removal of the
injected signal from the signal out from the line. No, I am not
worrying about line protection, or echo cancellation just the
conversion.


Thanks in advance,


Ashley Saulsbury