LTE Settings

Please note that nextepc.conf is used only if NextEPC is executed through nextepc-epcd. Otherwise, mme.conf, sgw.conf, pgw.conf, hss.conf, and pcrf.conf should be modifed for the configuration.

LTE Settings

• PLMN and TAC

  PLMN (Public Land Mobile Network) consists of a MCC (Mobile Country Code) and MNC (Mobile Network Code), which is a five- or six-digit number identifying a country and a mobile network operator. TAC (Tracking Area Code) represents a geographical area of the network, the eNodeBs located in TAC are only accepted by the MME. In /etc/nextepc/mme.conf, please modify PLMN and TAC in mme → gummei and tai:

mme:
    gummei: 
      plmn_id:
        mcc: 001
        mnc: 01
      mme_gid: 2
      mme_code: 1
    tai:
      plmn_id:
        mcc: 001
        mnc: 01
      tac: 12345

• Restarting NextEPC daemons.

  After changing config files, please restart NextEPC daemons.

sudo systemctl restart nextepc-mmed
sudo systemctl restart nextepc-pgwd
sudo systemctl restart nextepc-sgwd
sudo systemctl restart nextepc-hssd
sudo systemctl restart nextepc-pcrfd

Default Config

• GUMMEI, PLMN and TAC

* GUMMEI
  PLMN ID - MNC: 001, MCC: 01
  MME Group : 2
  MME Code : 1

* TAI
  PLMN ID - MNC: 001, MCC: 01
  TAC : 12345

• Security

* Integrity : EIA1 - SNOW 3G
* Ciphering : EEA0 - null ciphering