nanog mailing list archives

Re: FCC proposes $10 Million fine for spoofed robocalls


From: Michael Thomas <mike () mtcc com>
Date: Thu, 19 Dec 2019 12:56:56 -0800


On 12/19/19 11:34 AM, William Herrin wrote:
On Thu, Dec 19, 2019 at 11:27 AM Brian J. Murrell <brian () interlinx bc ca> wrote:
On Thu, 2019-12-19 at 11:02 -0800, William Herrin wrote:
I call your phone number.
Your phone company compares my number against your whitelist. Ring
through on match.
If no match, "You have reached Name. Press 2 to leave a message.
Press
3 to enter your code. Press 0 or stay on the line for an operator."
Ring through on a valid code.
If 0, the call connects to a call center where a live operator
evaluates the call. Who am I? Why am I calling? Do I meet the
plain-English criteria you've established for calls to allow through?
If no, the operator offers to connect me to your voicemail. If yes,
the operator dials you, explains who's calling and asks your
permission to connect the call.
It really doesn't (currently at least -- until robocallers start using
voice recognition to defeat my system) need to be this complicated or
over-engineered.  A simple audio captcha works wonders.

    Hello.  If you are a telemarketer, press 1.  If you want to speak to
    somebody at this number, press 5.

Anyone pressing 1 gets their caller-id added to my blacklist and is
asked to add our number to their do not call list.  In reality all
telemarketers use robocallers so they don't even get that far.
Hi Brian,

I don't want to start an arms race with the spam callers, I want to
end it. That means: jump directly to something they can't easily
defeat.

Plus if it didn't work well/too cumbersome/etc with email, it probably won't be any better with voice. We have lots of experience with what doesn't work for email.

Mike


Current thread: