We recommend that you first configure the operator policy and call control profile and make a note of the names you assign the policy and profile.

configure 
   operator-policy name policy_name 
      associate call-control-profile name profile_name 
      exit  
   call-control-profile name profile_name 
      end 

Notes:

To enable the MME to retrieve the IMEI from the UE, the following MME service configuration is required. The following configures the Operator Policy selection based on IMEI-TAC for normal 4G Attach or normal 4G TAU when the IMEI/IMEI-SV is retrieved via Security-Mode-Complete. After the operator policy and call control profile are configured, then perform the additional configuration of the imei-query-type for the MME service.

configure 
 context context_name 
      mme-service name service_name 
         policy { attach | tau } imei-query-type { imei | imei-sv } verify-equipment-identity [ allow-on-eca-timeout | deny-greylisted | deny-unknown | verify-emergency ]   
         end 

Notes:

Important

The operator policy(s), call-control profile(s), and IMEI-TAC group(s) need to be configured already and according to the instructions above.

To setup IMEI-TAC-based operator policy selection, use the precedence command in the LTE Subscriber Map configuration mode to:

• set the order of precedence for the subscriber map,

• set which type of matching criteria is to be used to determine which operator policy to select - for this procedure, use the imei-tac keyword,

• optionally, set more granular IMEI-TAC matching criteria, either singly or in pairs:

  • mcc + mnc

  • imsi

  • service-plmnid

• point to an operator policy for subscribers meeting the match criteria.

Important

The following example details configuration for IMEI-TAC-based selection. Other match criteria options are not included here. For more information on configuration options, refer to the Command Line Interface Reference.

configure 
   lte-policy 
      subscriber-map map_name 
         precedence precedence_number match-criteria imei-tac group group_name [ imsi mcc mcc mnc mnc 
[ msin { first start_msin_value last end_msin_value } ] ] [ operator-policy-name policy_name 
         no precedence precedence_number 
         end 

Notes:

• precedence precedence_number - The precedence level defined by the operator is used to resolve the selection of the operator policy when multiple variable combinations match for a particular UE. The lower precedence number takes greater priority during selection.

  In releases prior to 21.8: precedence_number must be an integer from 1 to 1024.

  In 21.8 and later releases: precedence_number must be an integer from 1 to 10000, where 1 has the highest precedence.

• match-criteria - Selects which set of variables will be 'matched-to' to select an operator policy. For this procedure, use the imei-tac keyword to select the IMEI-TAC group as the matching criteria. For more granular match criteria, include the following singly or in pairs: IMSI and/or MCC+MNC and/or serving PLMNID in accordance with the following usage options:

  • Operator policy selection based on IMEI-TAC only, syntax example:

    precedence 1 match-criteria imei-tac-group myGroup operator-policy-name BESTpol 

  • Operator policy selection based on IMEI-TAC + Service PLMNID, syntax example:

    precedence 1 match-criteria imei-tac-group myGroup service-plmnid 12345 
     operator-policy-name BESTpol 
    
    

  • Operator policy selection based on IMEI-TAC + MCC-MNC of UE, syntax example:

    precedence 1 match-criteria imei-tac-group myGroup imsi mcc 123 mnc 234 operator-policy-name BESTpol 
    
    

  • Operator policy selection based on IMEI-TAC + MCC-MNC of UE + Serving PLMNID, syntax example:

    precedence 1 match-criteria imei-tac-group myGroup imsi mcc 123 mnc 234 service-plmnid 56789 operator-policy-name BESTpol 
    

  • Operator policy selection based on IMEI-TAC + IMSI, syntax example:

    
    precedence 1 match-criteria imei-tac-group myGroup imsi mcc 123 mnc 234 msin first 1223 last 2333 operator-policy-name BESTpol 
    

  • Operator policy selection based on IMEI-TAC + IMSI + Serving PLMNID, syntax example:

    
    precedence 1 match-criteria imei-tac-group myGroup imsi mcc 123 mnc 234 msin first 1223 last 2333 service-plmnid 56789 operator-policy-name BESTpol 
    

• group group_name - Identifies the name of the previously-defined IMEI-TAC group with the configured IMEI-TAC values to use for matching. The group name is a string of 1 through 64 alphanumeric characters.

• operator-policy-name policy_name - Configures the name of the operator policy to which selection should be pointed after the criteria matching is completed. The policy name is a string of 1 through 63 alphanumeric characters.

• For more information about the lte-policy , subscriber-map , and the precedence commands, refer to the LTE Subscriber MAP Configuration Mode chapter in the Command Line Interface Reference .

From the Exec mode, use the following to verify the configuration for operator policy selection based on IMEI-TAC:

show configuration  

The following is an example of the type of information that would be presented in the show output:

config 
... ... ... 
  lte-policy 
    subscriber-map submap1 
      precedence 1 match-criteria imei-tac group itacgrp1 operator-policy-name oppol1 
      precedence 2 match-criteria imei-tac group imeitacgrp11 service-plmnid 12345 operator-policy-name op2 
      precedence 3 match-criteria imei-tac group imeitacgrp2 operator-policy-name op1 
    exit 
    imei-tac-group itacgrp1 
      tac 31441551 77777777 87650506 87654321 
      tac-range from 23456789 to 98765432 
    exit 
    imei-tac-group imeitacgrp11 
      tac 01192119 66666666 87650999 98765432 
      tac-range from 11001100 to 11111111 
….. … …. 
    exit 
... ... … 
end