Ha ha. 

But there's no concerted industry and regulatory scheme to block fax per se. 

> On Nov 21, 2025, at 5:12 PM, Carlos Alvarez via VoiceOps 
> <[email protected]> wrote:
> 
> Also, fax will be dead by 2005 at the latest.
> 
> 
> On Nov 21, 2025 at 3:10:30 PM, Alex Balashov <[email protected]> 
> wrote:
>> Unfounded speculation, but I think this is a short-term hack and will 
>> ultimately go the way of the dodo.
>> 
>> Yes, services like this will go the way of the dodo. You can't impersonate 
>> the original caller per se. There will be some other way to pass the 
>> identity of the caller, or other enriched call data that would be relevant 
>> to a database lookup. It won't be by presenting CID of a number you don't 
>> own.
>> 
>> -- Alex
>> 
>>> On Nov 21, 2025, at 5:02 PM, Carlos Alvarez via VoiceOps 
>>> <[email protected]> wrote:
>>> 
>>> I’ve just deployed something similar to this via Telin.  I’m sure others 
>>> can do it too.  They have an automated system that verifies your 
>>> ownership/permission to use a phone number, and from then on, you can use 
>>> it and get either B or A attestation.  The most common interpretation of 
>>> the current regs is that this is the only way you can send off-net CLID in 
>>> the future.  If you want to have a live conversation about this I’m open to 
>>> a call.  It’s something I’ve been doing since the 90s and constantly 
>>> fighting the changing landscape on CLID.
>>> 
>>> If you’d like to talk to someone at Telin I can make an intro.  Great 
>>> people, solid service.
>>> 
>>> 
>>> On Nov 19, 2025 at 9:07:54 AM, Aaron C. de Bruyn via VoiceOps 
>>> <[email protected]> wrote:
>>> > I'm not entirely up on the whole FCC Caller ID Spoofing crackdown that's 
>>> > going on, but I just ran into a 3rd party service for medical offices 
>>> > that expects us to spoof Caller ID.
>>> >
>>> > The service works like this:
>>> > * I  grab my cell phone (123-456-7890) and call my doctor/dentist/medical 
>>> > office
>>> > * It's after hours and they are busy with other calls
>>> > * Their phone system turns around and forwards my call to a 3rd-party 
>>> > number (say 111-222-3333) emitting my Caller ID info ("Aaron" 
>>> > <1234567890>)
>>> > * They see a call come in on 111-222-3333 and know it's for "Dr. Bob's 
>>> > Office", so their system accesses his patient database and looks for my 
>>> > patient record with the phone number 123-456-7890 and someone answers the 
>>> > call saying "Thanks for calling Dr. Bob's office".
>>> >
>>> > My understanding is the ability to spoof Caller ID info across the PSTN 
>>> > is going away.
>>> >
>>> > I tested, and I certainly can't do it with a Twilio SIP trunk.
>>> >
>>> > The main reason I'm curious is I have a customer that has their own phone 
>>> > system that I help them manage (FreePBX linked to Twilio).  They just 
>>> > purchased an office that uses a 3rd-party phone provider (Weave) along 
>>> > with this 3rd-party answering service, and they are somewhat upset that I 
>>> > can't make it work with their existing phone system.  The third-party 
>>> > answering service doesn't have any way of interconnecting other than 
>>> > spoofing Caller ID over the PSTN to a random number they assigned to the 
>>> > medical office.
>>> >
>>> > Are services like this going the way of the dodo?  Are they having to set 
>>> > up private SIP trunks between clients to get this functionality?  Do some 
>>> > VoIP providers allow you to spoof Caller ID for this purpose under some 
>>> > sort of agreement?
>>> >
>>> > Thanks,
>>> >
>>> > -A
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>> 
>> 
>> --
>> Alex Balashov
>> Principal Consultant
>> Evariste Systems LLC
>> Web: https://evaristesys.com, https://www.csrpswitch.com
>> Tel: +1-706-510-6800
>> 
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--
Alex Balashov
Principal Consultant
Evariste Systems LLC
Web: https://evaristesys.com, https://www.csrpswitch.com
Tel: +1-706-510-6800

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