![]() To overcome the UE attach request failure, the following new configuration commands are introduced:ĮSM-cause-code with ESM Cause Code option missing-or-unknown-apnĮnabling EMM/ESM Cause Code Mapping (Cause Code 27) under MME-Service Reject message to be EMM Cause Code 19 ESM Failure and ESM Cause Code 27 Missing or Unknown APN, instead of the current cause codes EMM 17 and ESM 31. To overcome the impact in MME 4G attach SR calculations, the Cause Codes introduced in the EMM Attach Reject/ESM PDN Connectivity When UE attach request is sent from MME to P-GW, the DNS server responds back with “Server failure",Ĭausing the MME to reject the UE attach request with the following error messages:ĮSM PDN Connectivity Reject Container message with ESM Cause Code 31 Request Rejected Unspecified. The User Equipment (UE) suffers failure, during attach process with an EMM Attach Reject message sent from MME to UE. Enabling EMM/ESM Cause Code Mapping (Cause Code 27) under Call Control Profileįeature Summary and Revision History Summary Data.Enabling EMM/ESM Cause Code Mapping (Cause Code 27) under MME-Service.Uneven Distribution of eNodeBs in MME Managers.Target MME Load Balancing During Handover.State-Location Information Retrieval Flag.Handling Call Drop in Smart Watch and Multi-SIM Devices.S-GW Address Based Combined SPGW Selection.Sending EMM Information during Periodic TAU.MO Voice Call and MO Exception Data Support.MME Support for EN-DC SON Configuration Transfer IE on S1-AP.MME Bearer Request Message During Handover Process.IMEI Check during Periodic TAU Support for NB IoT Devices.HSS and AuC Interworking Configuration Enhancement.GTPV1/V2 Echo Support for Peer MME and SGSN.Excluding SGWs During Relocation Procedures.eNB Group Based Relative Capacity Transmission.Enabling EMM and ESM Cause Code Mapping.Counters for Reason 50/51 on MME and TAI Level. ![]() Controlling IMS Voice Over PS Session in S1 Mode.Collision Handling for Path Update during Bearer Creation.Auto Disable of Paging During MME Manager CPU Congestion.Adding Discrete eNB IDs to eNB Group in MME.Adding Cause Code 38 to Bulkschema Counters.5GS Interworking using N26 Interface Support.Customized Interface Between MME/SGSN and GMPC. ![]()
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