Network directories; Name-to-address mapping

Introduced: January 2022

Full Title

Network arrangements, protocols or services for addressing or naming > Network directories; Name-to-address mapping

Of 11 combined children, 7 exist in both systems.

4 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

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H04L 61/4505 using standardised directories; using standardised directory access protocols since 2022 IPC+CPC Available in IPC and CPC
H04L 61/4535 using an address exchange platform which sets up a session between two nodes, e.g. rendezvous servers, session initiation protocols [SIP] registrars or H.323 gatekeepers since 2022 IPC+CPC Available in IPC and CPC
H04L 61/4541 Directories for service discovery since 2022 IPC+CPC Available in IPC and CPC
H04L 61/4547 CPC only CPC only
H04L 61/4552 Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories since 2022 IPC+CPC Available in IPC and CPC
H04L 61/4553 CPC only CPC only
H04L 61/4555 CPC only CPC only
H04L 61/4557 Directories for hybrid networks, e.g. including telephone numbers since 2022 IPC+CPC Available in IPC and CPC
H04L 61/457 CPC only CPC only
H04L 61/4588 containing mobile subscriber information, e.g. home subscriber server [HSS] since 2022 IPC+CPC Available in IPC and CPC
H04L 61/4594 Address books, i.e. directories containing contact information about correspondents (telephone directories in user terminals H04M1/27453) since 2022 IPC+CPC Available in IPC and CPC

Class H04,2013–2023, worldwide · Source: EPO PATSTAT

Class H04,2013–2023, worldwide · Source: EPO PATSTAT