Comment Re: Bah. (Score 1) 161
You basically canâ(TM)t. ANI and DNIS were wet by telcos historically inside the pbx. Along came SIP\voip. The PBX was vitualized and voip providers saw it fit to allow customers to set their own caller id info. Providers are all federated with the traditional telco providers. There are sip gateways all over converting signals from t1\e1\pri lines back and forth.
Fixing it would basically mean re-federating across all the telco providers, and theyâ(TM)d have to audit those who they federate with. No incentive.
PKI would likely be the way forward IMO.