echopapa ☑️ on Nostr: npub142ur4…wv39p still better as fiddling around with SIP trunks from various ...npub142ur4mpk97ju9z3ft4jmvr3q64sx7l6q2z9csd3qyk66mqgxqpksnwv39p (npub142u…v39p) still better as fiddling around with SIP trunks from various providers and different brands of PBXes.Never needed "compatibility lists" for ISDN.