manderso@sdcsvax.UUCP (Mark Anderson) (05/07/86)
> >The test consoles which were once widely used by telco operators who >were running tests on the integrity of the phone lines, all incorporated >a randomizing filter which reduced speech to a pattern of buzzing and >clicking. It was recognizable as speech if you knew what it sounded like >but wasn't understandable at all. The phone companies required that this >filter be added because of some government regs about phone-tapping. >Hutch I heard that this filter is now required on all phones. I know it is in my phone for sure. manderso!sdcsvax