3 ms·
If you can get S7 link with Telco, in most cases it's trivial to spoof Caller ID signals, as those are essentially forwarded from originating network. Getting d
by p_l 3y ago
If you can get S7 link with Telco, in most cases it's trivial to spoof Caller ID signals, as those are essentially forwarded from originating network. Getting direct S7 link isn't as hard as it sounds, it's IIRC common thing if yo want to run VOIP provider.
Your telco's NOC can at best track what "port of entry" the call came from but can't force the Caller ID go be truthful.
- xur17 3y agoI imagine it has changed, but 10-ish years ago I recall having a cheap VoIP account that just let me enter whatever phone number I wanted as the caller ID.
- p_l 3y agoIt's very much a "honor system". If VoIP provider doesn't do due diligence, the other networks can't really check the value, especially since number porting became norm
- MichaelZuo 3y agoFor the first few dozen times sure, but after the hundredth or so report of a scam call associated with a spoofed number, the VoIP provider should be blocked by the telco. That is if they were allowed to do so.
- p_l 3y ago"should" is doing a lot of heavy lifting in that statement :)