A coworker of mine changed his voicemail message to start with the tri-tone that plays for a disconnected number (bah dah deet) followed by a normal voicemail greeting. The auto dialers delete the number from their list when they hear the tri-tone. It did confuse legitimate callers that were trying to reach him though.
A coworker of mine changed his voicemail message to start with the tri-tone that plays for a disconnected number (bah dah deet) followed by a normal voicemail greeting. The auto dialers delete the number from their list when they hear the tri-tone. It did confuse legitimate callers that were trying to reach him though.