https://bankingjournal.aba.com/2024/09/aba-trades-urge-quick-implementation-of-call-notification-protocol/
ABA, associations urge quick implementation of call notification protocol | ABA Banking Journal
Sep 20, 2024 - The American Bankers Association yesterday joined other financial trade associations in urging the Federal Communications Commission to require voice service
quick implementationnotification protocolabaassociationsurge
https://datatracker.ietf.org/doc/html/rfc4662
RFC 4662 - A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists
A Session Initiation Protocol (SIP) Event Notification Extension for Resource Lists (RFC 4662, )
session initiation protocol