It won't make a difference. So STIR/SHAKEN prevents caller ID spoofing... Spammers/scammers can still get "legit" numbers and scam from them. It costs about 50 cents/month for a DID.
I have moved to allow-list only and have all notifications turned off. Anyone who wants to talk on the phone will need to arrange a time in advance through some other means.
There was a time in which people were not reachable by voice any time and anywhere. That was fine.
But what if something unusual happens, for example if something happens with my son phone I instructed him to ask a friend to call me (we wrote my number down)... I think as always the problem needs to be solved at it's root and not with some hack that fails in some important cases.
I set up greylisting and it works great. First call from an unknown number gets SIT and "Please try this call again", second call goes through. Spammers don't call back, real people do.
edit: I'm running Asterisk. The initial implementation was for a landline, so I used a landline->SIP gateway and a rejected call would still ring the phone once (this way it would fail gracefully). I've since transitioned the landline to VOIP so all calls go through Asterisk. My mobile number is on Gvoice so I haven't bothered, but it would be straightforward to have Asterisk police those as well since I've got an OBI200 Gvoice->SIP adapter.
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[ 434 ms ] story [ 246 ms ] threadIt will be interesting to see if this actually makes a difference.
There was a time in which people were not reachable by voice any time and anywhere. That was fine.
edit: I'm running Asterisk. The initial implementation was for a landline, so I used a landline->SIP gateway and a rejected call would still ring the phone once (this way it would fail gracefully). I've since transitioned the landline to VOIP so all calls go through Asterisk. My mobile number is on Gvoice so I haven't bothered, but it would be straightforward to have Asterisk police those as well since I've got an OBI200 Gvoice->SIP adapter.