posted on Feb, 2 2005 @ 08:53 AM
you wouldn't even detect it...not with today's technology...
snap crackle and pop on the line 20 years ago would inidicate a possible tap on the line, however today all telephone companies employ some type of
digital cross connect in the core of their network which makes phone taps simply a matter of reconfiguring software, rather than actually connecting a
test set/recording device in parrallel with the tip/ring leads on the analog phone line....
back in the old days, one could simply take the probes from a multimeter and clip them to their phone jack to detect the very short voltage drop
across the line, even if you were being tapped at a central office switch...this is because your phone line back then actually formed an unbroken
circuit back to the phone switch, a truly analog line...
today the telephone network cores are dgital...if someone's listening, you likely won't notice anything at all...unless of course they are very,
very close, like up on a telephone pole outside your house.....this is because your calls are "trunked" digitally between switches today...meaning
the voltage on the wire is trunked, sampled digitally, channel multiplexed and then routed across the telco's switched network "cloud"...which
means your conversation can be eavesdropped without affecting the analog signal on your handset which means no snap crackle pop to alert you that you
are being tapped....
this is probably more than you wanted to know....
watch "Three days of the Condor" with Rober Redford for a hollywood gestalt image of old school "phreaking"....