Yelled to wife "don't answer"(unrecognized number). She did. No one there. Impatient robo dialler? Telemarketers are obsessed with hitting as many numbers as possible. They don't have time to let it ring more than 4 times. Ha ha the stupid morons. That's 1 weapon we have against them. I ported my landline over to a VoIP company. That's my 2nd and greatest weapon against them. I have unlimited black listing and routing to treatments based on spam probability rating. Spoofed but valid numbers (unrecognized numbers) I try not to answer.