Apparently Google acquired Jibe and offers it as a cloud solution to carrier OEMs to implement RCS. https://www.gsma.com/get-involved/gsma-membership/gsma_orgs

Apparently Google acquired Jibe and offers it as a cloud solution to carrier OEMs to implement RCS. https://www.gsma.com/get-involved/gsma-membership/gsma_orgs/jibe-mobile-inc/ https://www.gsma.com/get-involved/gsma-membership/gsma_orgs/... https://techcrunch.com/2015/09/30/google-acquires-jibe-mobile-to-help-adopt-new-standard-for-carrier-messaging/ https://techcrunch.com/2015/09/30/google-acquires-jibe-mobil... https://android.googleblog.com/2015/09/committing-to-rcs-latest-standard-in.html https://android.googleblog.com/2015/09/committing-to-rcs-lat... https://jibe.google.com/jibe-platform/ https://jibe.google.com/jibe-platform/ https://www.sicurezzaegiustizia.com/wp-content/uploads/2020/12/messages_e2ee.pdf https://www.sicurezzaegiustizia.com/wp-content/uploads/2020/... > RCS uses a set of standard internet protocols like Session Initiation Protocol (SIP)[1] to establish a connection between two clients through a central messaging server. This connection is then used to exchange the messages using Message Session Relay Protocol (MSRP)[2]. In some RCS deployments this server is hosted by the carrier, and in other deployments the server is hosted by Jibe Mobile from Google. > In situations where the two clients are not on the same carrier network, they’re connected through multiple servers—one from each carrier. The connection between the RCS client app and the carrier’s messaging server is encrypted using Transport Layer Security (TLS). Server to server communications are also encrypted. How end-to-end encryption in Google Messages provides more security https://support.google.com/messages/answer/10262381 https://support.google.com/messages/answer/10262381 Google Messages end-to-end encryption technical paper https://www.gstatic.com/messages/papers/messages_e2ee.pdf https://www.gstatic.com/messages/papers/messages_e2ee.pdf Data security for RCS Business Messaging (RBM) https://developers.google.com/business-communications/rcs-business-messaging/support/data-security https://developers.google.com/business-communications/rcs-bu...