Presence Services uses XMPP to federate with the following types of remote deployments:
Presence Services prior to Release 7.0
Cisco Jabber
Ignite Realtime Openfire
Any standard XMPP server
Ignite Realtime Openfire and Cisco Jabber only support a single local Presence/IM domain and support federation on a single-server deployment.
Presence Services supports multiple local Presence/IM domains and supports federation on a single-server or a multi-server cluster.
Federation between two deployments of Presence Services is supported using SIP. For more information, see Inter-PS federation.
XMPP federation supports XEP 0045 multi-user chat only with Avaya Workplace Client clients. The chat rooms are hosted on either Presence Services or an XMPP federated system depending on which system starts the conference.
