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A comment on T-Mobile, Verizon and AT&T phone calls are failing across the US. Parent comment

Re:T-Mobile, Verizon and AT&T phone calls are failing across... by adrianpike on Monday June 15, 2020 @06:09PM (#23533641)
Easy: someone fat-fingered SS7 the same way someone fat-fingered BGP.

https://en.wikipedia.org/wiki/Signalling_System_No._7 https://blog.cloudflare.com/how-verizon-and-a-bgp-optimizer-...

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Re:T-Mobile, Verizon and AT&T phone calls are failing across... by bogomipz on Monday June 15, 2020 @08:04PM (#23534519)
No it's not the same at all. A carrier's SS7 configuration does not get propagated out to other carriers.
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Re:T-Mobile, Verizon and AT&T phone calls are failing across... by jcrawfordor on Monday June 15, 2020 @09:33PM (#23535059)
Quite possible though is a significant disruption of one of the many services like LNP which are implemented via SS7 and shared by all carriers - there is indeed a complex set of inter-dependencies between carriers that are all somewhat generically referred to as part of the SS7 system, several of which are required to successfully set up a call or deliver a text message.
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Re:T-Mobile, Verizon and AT&T phone calls are failing across... by bogomipz on Monday June 15, 2020 @11:04PM (#23535550)
All the major carriers maintain their own local LNP database. The only updates that would be distributed via a third party(NPAC) would be recently ported land lines.
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Re:T-Mobile, Verizon and AT&T phone calls are failing across... by gwright on Tuesday June 16, 2020 @12:35AM (#23535977)
This comment tickled something in my memory:

All Circuits are Busy Now: The 1990 AT&T Long Distance Network Collapse

http://users.csc.calpoly.edu/~jdalbey/SWE/Papers/att_collaps...

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Re:T-Mobile, Verizon and AT&T phone calls are failing across... by numpad0 on Monday June 15, 2020 @11:29PM (#23535696)
What about number transfers? Some MNP implementation rely on the original Home Subscriber Server the number was issued in or something, so there could be paths between core networks among major carriers.

e: already addressed, sorry

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