Local Cause Code Mapping
You can ignore the default EPS Mobility Management (EMM) cause code and configure a preferred EMM cause code to send to a UE in response to a procedural failure.
For example, you can instruct the AMF to return one of the six different EMM cause codes other than the default value, when the AMF receives an authentication error from an AUSF. A list local cause code mappings are created at the global configuration level. A desired list name is specified in the Call Control Profile or in the AMF services or both.
The order of Cause Code selection is as follows:
-
Call Control Profile
-
AMF Services
-
Default
You can configure the local cause codes either or both in the AMF-service or in the Call Control profile.
Table 1 explains the local cause code-mapping conditions, and 5GMM cause codes with its default value.
Local Cause Code Mapping Condition |
5GMM Cause Codes |
---|---|
auth-failure |
Default Value: |
clear-subscriber |
Default Value: |
ctxt-xfer-fail |
Default Value: |
ims-vops-failure |
Default Value: |
peer-node-unknown |
Default Value: |
registration-restriction |
Default Value: |
rat-type-restriction |
Default Value: |
restricted-zone-code |
Default Value: |
udm-unavailable |
Default Value: |