Feature Description

AMF supports idle mode handoff to MME for 5GS to EPS Idle mode mobility using N26 interface.

  • Context Request: MME sends the Context Request message to the AMF to get the MM and EPS bearer Contexts for the UE.

  • Retrieve SM Context service operation: Retrieves an individual SM context, for a given PDU session associated with 3GPP access from the SMF.

Currently, the following are not supported:

  • Handling of timeouts from SMF during Retrieve Request

  • Handling of negative response from SMF during Retrieve Request