I finally found out that 705-919-0234 is an Escort Service call-back number. Ads in newspaper advertising various girls provide a number for Johns to call and leave their telephone number qirh. When the callgirl gets a minute, she'll call the number back, find out what exactly the John is looking for, then book the appointment. If a female answers the John's tel. number, the escort simply hangs up or doesn't speak.