User Guide

9
6 Core network configuration
LTEMME is a LTE MME (Mobility Management Entity) implementation. It has a built-in
SGW (Serving Gateway), PGW (Packet Data Network Gateway), PCRF (Policy and Charging
Rule Function), HSS (Home Subscriber Server) and EIR (Equipment Identity Register). It is
used with the Amarisoft LTE eNodeB to build a highly configurable LTE test network.
6.1 Selection of MME configuration file
The default file used by the lte automatic service for configuring the Core network is mme.cfg
(available under /root/mme/config directory).
This file aims to set parameters such as PLMN ID, network name, PDN list, APN name and
others.
Please note that this file is a symbolic link to real configuration file as depicted below
6.2 Customization of MME parameters
6.2.1 PLMN ID
Default PLMN ID of callbox is 001 01.
If the test sim card provided with the AMARI callbox is used, you can skip this section. No
customization is required
If your test SIM card has a different HPLMN, you can change the PLMN of the box.
in /root/mme/config/mme.cfg file, change plmn: "00101" value and replace 00101 by your
MCC/MNC code .
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Note : Same modification must be done at eNodeB side:
In /root/enb/config/enb.cfg file, modify or add a new MCC/MNC value in the plmn_list
array.
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6.2.2 Adding new SIM card to the database
If the test sim card provided with the AMARI callbox is used, you can skip this section. No
customization is required.
Same if you want to connect multiple UE using the same sim card model (and same IMSI by con-
sequence). The MME will allow each UE to attach with the same IMSI (001010123456789).UE
are distinguished with their IMEI in that case.