ITU X Series
Message Handling System
X.400 10021-1 Service and system overview
X.402 10021-2 Overall architecture
X.403         Conformance testing
X.407 10021-3 Abstract service definition conventions
X.408         Encoded information type conversion rules
X.411 10021-4 MTS Abstract service definition
X.413 10021-5 MS Abstract service definition
X.419 10021-6 Protocol specifications
X.420 10021-7 Interpersonal messaging system
T.330 Telematic acess to IPS
X.435         Electronic data interchange messaging system
X.460         Management: Model and architecture
X.462         Management: Logging information
X.467         Management: Message Transfer Agent management
Directory Services
X.500 9594-1  Overview
X.501 9594-2  Models
X.511 9594-3  Abstract service definition
X.518 9594-4  Procedures for distributed operation
X.519 9594-5  Protocol specifications
X.520 9594-6  Selected attribute types
X.521 9594-7  Selected object classes
X.525         Replication
X.509 9594-8  Authentication framework
MUC RTP
X.601   Multi-peer communications framework
X.602   Group management protocol
X.603   Relayed multicast protocol: Framework
X.603.1 Relayed multicast protocol: Specification for simplex group applications
X.603.2 Relayed multicast protocol: Specification for N-plex group applications
X.604   Mobile multicast communications: Framework
X.604.1 Mobile multicast communications: Protocol over native IP multicast networks
X.604.2 Mobile multicast communications: Protocol over overlay multicast networks
X.605   Enhanced Communications Transport Service (ECTS) definition
X.606   ECTS: Specification of simplex multicast transport
X.606.1 ECTS: Specification of QoS management for simplex multicast transport
X.607   ECTS: Specification of duplex multicast transport
X.607.1 ECTS: Specification of QoS management for duplex multicast transport
X.608   ECTS: Specification of N-plex multicast transport
X.608.1 ECTS: Specification of QoS management for n-plex multicast transport
P2P RTP
X.609    Managed peer-to-peer (P2P) communications: Functional architecture
X.609.1  Managed P2P communications: Peer activity management protocol (PAMP)
X.609.2  Managed P2P communications: Overlay resource control protocol (ORCP)
X.609.3  Managed P2P communications: Multimedia streaming signalling requirements
X.609.4  Managed P2P communications: Multimedia streaming peer protocol
X.609.5  Managed P2P communications: Overlay management protocol
X.609.6  Managed P2P communications: Content distribution signalling requirements
X.609.7  Managed P2P communications: Content distribution peer protocol
X.609.8  Managed P2P communications: Management protocol for live data sources
X.609.9  Managed P2P communications: Overlay content management protocol
X.609.10 Managed P2P communications: Signalling requirements for data streaming