Previous Behavior: If IMEI was received in Create Session Request for a Wi-Fi call, the ePDG CDR encoded MAC address in the servedIMEISV field. The MAC address was given preference over IMEI and encoded in servedIMEISV. With this behavior, CDR processing was affected.

New Behavior: IMEI will be prioritized over MAC address and will be sent in the servedIMEISV field. The servedIMEIsv field in CDR is optional. If Create Session Request for a Wi-Fi call has both IMEI and MAC address, then IMEI is encoded in servedIMEIsv.

This behavior is configurable using the gtpp prioritize-imei-over-mac-address CLI in the GTPP Server Group Configuration mode. If the CLI is not configured, the existing behaviour will take effect.

Use the following configuration to prioritize IMEI over MAC address and encode IMEI in the servedIMEISV field of the CDR. If IMEI is not available, the servedIMEISV field will not be present in the CDR.

configure 
   context context_name 
      gtpp group group_name 
         [ default | no ] gtpp prioritize-imei-over-mac-address 
         end 

NOTES:

• default | no —Specify either one of the options to prioritize MAC over IMEI and encode it in servedIMEISV field. This is the existing behavior.

  If MAC is not available, then IMEI is encoded in the servedIMEISV field.