How it Works
This feature works with the customized RAT-type configuration in the DNN profile configuration.
When the SMF skips UDM subscription, then it stops sending Fetch-Subscription and Subscribe-for-Notification during session establishment.
When the SMF skips the UDM subscription, then it stops sending Unsubscribe-to-Notification during session release. The SMF sends Unsubscribe-to-Notification only when the UDM receives the UECM messages.
The SMF supports dynamic change for UDM subscription skip configuration. That is, new configuration is applicable for the new session getting established. The existing sessions continue as per the old behavior of configuration.
For information on the complete configuration commands, see the following section.