[] Most of these calls originate overseas, many in boiler sms gateway bulgaria rooms in india, and they are surprisingly effective.[] Robocalls have been used for legitimate campaigning and public opinion polling, but have also been used for voter suppression, false endorsements, and negative campaigning that borders on fraud. The federal regulatory regime currently excludes political robocalls from most telemarketing regulations. Presidential campaigns and national interest groups have accidentally violated state laws in trying to communicate with voters by using robocalls.[]Crawler devices - a majority of fraudulent calls originate from nigerian phone scammers, who claim . Billion a year off phone scams.

[] Some callers have to make up to calls per day. To help with speeding things up, they will sometimes use crawler devices which is computerized to go through every area code calling each number. If the caller does not reach, they mark the lead as "No answer" and the system programs it so they get called again a few days later. If the company does not have a large lead pool, they may get called as soon as hours later. As with email spammers, they know that a certain proportion of their hits will score.