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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 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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