The MSRP-to-XMPP gateway SHOULD wait until receiving this reflected message before sending an MSRP 200 OK reply to the original sender. Saint-Andre, et al. Standards Track [Page 33] RFC 7702 SIP-XMPP Interworking: Groupchat December 2015 6.3.2.
Jun 12, 2011 · The XMPP Gateway allows visitors to communicate with site agents from their favorite IM application. For example, a visitor using Google Talk may chat with an agent. Each account is represented as a contact in the IM client, and the agent availability is reflected as well.