Check out STIR/SHAKEN:

https://transnexus.com/whitepapers/understanding-stir-shaken/

https://transition.fcc.gov/cgb/Robocall-Strike-Force-Final-Report.pdf

For what it's worth, American Express Fraud Department comes up at "Spam Risk" through my provider.

There are "recommendations" for labels. I do believe the carrier is setting the labels and I would reasonably surmise they are the source. It could be prior use of an assigned number. Or not. I am not aware of how to get the labeling of a number fixed. Anyone?

YMMV.

Best,

-M<

On Thu, Oct 31, 2019 at 8:24 AM Ca By <cb.list6@gmail.com> wrote:

On Thu, Oct 31, 2019 at 6:05 AM David Funderburk <dfund@globalvision.net> wrote:

One of our customers office number is coming across as 'Survey Call' on T-Mobile cell phones. I know with certainty it's with 'T-Mobile' phones. I don't have another contact on another network that I know I can try. How do we get that fixed?

Thanks for any suggestions!

Probably number spoofing and has nothing to do with T-Mobile

https://www.npr.org/2019/06/06/727711432/do-i-know-you-and-other-spam-phone-calls-we-can-t-get-rid-of

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Regards,

David Funderburk
GlobalVision
864-569-0703

For Technical Support, please email gv-support@globalvision.net

GlobalVision is a communications company that provides services which includes Internet, internal and external networks with over 25 years experience. With our Zero Downtime strategies we help companies increase up-time and decrease lost productivity and costs.

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