Section: 5.3.5.3 Wireline access service area restrictions
Content: If: a) a SERVICE REJECT message with the 5GMM cause #28 "Restricted service area"; b) a DL NAS TRANSPORT message with the Payload container type IE set to "N1 SM information" and the 5GMM cause #28 "Restricted service area"; or c) a REGISTRATION ACCEPT message includes the PDU session reactivation result error cause IE with the 5GMM cause #28 "Restricted service area"; is received over wireline access then the 5G-RG or the W-AGF acting on behalf of the FN-CRG (or on behalf of the N5GC device) shall start enforcing the wireline access service area restrictions and shall enter the state 5GMM-REGISTERED.NON-ALLOWED-SERVICE. While in the state 5GMM-REGISTERED.NON-ALLOWED-SERVICE, the 5G-RG or the W-AGF acting on behalf of the FN-CRG (or on behalf of the N5GC device) shall: a) if in 5GMM-IDLE mode over wireline access: 1) shall not perform the registration procedure for mobility and periodic registration update with Uplink data status IE except for emergency services or for high priority access; and 2) shall not initiate a service request procedure except for: - emergency services, - emergency services fallback; or - high priority access; and b) if in 5GMM-CONNECTED mode over wireline access: 1) shall not perform the registration procedure for mobility and periodic registration update with Uplink data status IE except for: - emergency services; - emergency services fallback; or - high priority access; 2) shall not initiate a service request procedure except for emergency services, or high priority access; and 3) shall not initiate a 5GSM procedure except for emergency services or high priority access; over the wireline access. When the 5G-RG is switched off, the UICC containing the USIM is removed or the 5G-RG starts using another wireline access network, the 5G-RG shall stop enforcing the wireline access service area restrictions, if enforced. NOTE: When the 5G-RG acting on behalf of the AUN3 device determines that the AUN3 device is switched off or the UICC containing the USIM of AUN3 device is removed, the 5G-RG acting on behalf of the AUN3 device stops enforcing the wireline access service area restrictions, if enforced. When the W-AGF acting on behalf of the FN-CRG determines that the FN-CRG is switched off, the W-AGF acting on behalf of the FN-CRG stops enforcing the wireline access service area restrictions, if enforced. When the W-AGF acting on behalf of the N5GC device determines that the FN-CRG serving the N5GC device is switched off, the W-AGF acting on behalf of the N5GC device stops enforcing the wireline access service area restrictions, if enforced.