> Its one of the few reasons I could think of for "blank" robo calls. Telephone spammer software dials a load of numbers, and when someone picks up, only then

> Its one of the few reasons I could think of for "blank" robo calls. Telephone spammer software dials a load of numbers, and when someone picks up, only then do they connect the call to a human on their end. It's why you often get a weird pause before they actually say anything, and if there happens not to be a human available you get a "blank" call.