Configuring the Handover from 5G to 4G

To configure this feature, use the following configuration:

config 
    amf-services service_name 
        peer-mme tai-match priority priority_value mcc mcc_value mnc mnc_value tac tac_value [ to end_tac_value ] address mme_address 
        exit 
    instance instance-id instance_id 
        endpoint protocol 
            vip-ip ip_address 
            exit 
        endpoint gtp 
            nodes node_replicas 
            retransmission { max-retry maximum_number_of_retries | timeout  retransmission_timeout_value } 
            end 

NOTES:

  • peer-mme tai-match priority priority_value mcc mcc_value mnc mnc_value tac tac_value [ to end_tac_value ] address mme_address

    • peer-mme tai-match priority priority_value —Specify the priority value.

    • mcc mcc_value —Specify the three-digit Mobile Country Code. Must be an integer with three digits.

    • mnc mnc_value —Specify the two or three-digit Mobile Country Network. Must be an integer with three digits.

    • tac tac_value —Specify the Tracking Area Code value. Must be an integer in the range of 1-65535.

    • to end_tac_value—Specify the Tracking Area Code range for peer MME.

    • address mme_address—Specify the peer MME address.

  • nodes node_replicas —Specify the replica nodes for resiliency.

  • max-retry maximum_number_of_retries —Specify the number of request retry attempts. Must be an integer in the range 0–5 (default value: 3). To disable retransmission, set this value to zero (0).

  • timeout retransmission_timeout_value —Specify the retransmission interval in seconds. Must be an integer in the range 0–10 (default value: 2). To disable retransmission, set this value to zero (0).