Program SIM Card with [Open Cells Project](https://open-cells.com/) application [uicc-v2.6](https://open-cells.com/d5138782a8739209ec5760865b1e53b0/uicc-v2.6.tgz).
Program SIM Card with [Open Cells Project](https://open-cells.com/) application [uicc-v2.6](https://open-cells.com/d5138782a8739209ec5760865b1e53b0/uicc-v2.6.tgz).
With [PuTTY](https://the.earth.li/~sgtatham/putty/latest/w64/putty.exe), send the following AT commands to the module using a serial interface (ex: COM2) at 115200 bps:
With [PuTTY](https://the.earth.li/~sgtatham/putty/latest/w64/putty.exe), send the following AT commands to the module using a serial interface (ex: COM2) at 115200 bps:
```bash
```bash
# MUST be sent at least once everytime there is a firmware upgrade!
# MUST be sent at least once everytime there is a firmware upgrade!
Please also refer to the official [USRP Host Performance Tuning Tips and Tricks](https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks) tuning guide.
The following steps are recommended. Please change the network interface(s) as required. Also, you should have 10Gbps interface(s): if you use two cables, you should have the XG firmware. Refer to the [N300 Getting Started Guide](https://kb.ettus.com/USRP_N300/N310/N320/N321_Getting_Started_Guide) for more information.
* Use an MTU of 9000: how to change this depends on the network management tool. In the case of Network Manager, this can be done from the GUI.
* Increase the kernel socket buffer (also done by the USRP driver in OAI)
* Disable hyper-threading in the BIOS (This step is optional)
* Optional: Disable KPTI Protections for Spectre/Meltdown for more performance. **This is a security risk.** Add `mitigations=off nosmt` in your grub config and update grub. (This step is optional)
Example code to run:
```
for ((i=0;i<$(nproc);i++)); do sudo cpufreq-set -c $i -r -g performance; done
- If you get real-time problems on heavy UL traffic, reduce the maximum UL MCS using an additional command-line switch: `--MACRLCs.[0].ul_max_mcs 14`.
## 6.3 Uplink issues related with noise on the DC carriers
- There is noise on the DC carriers on N300 and especially the X300 in UL. To avoid their use or shift them away from the center to use more UL spectrum, use the `--tune-offset <Hz>` command line switch, where `<Hz>` is ideally half the bandwidth, or possibly less.
# S-GW binded interface for S1-U (N3) communication (GTPV1-U) can be ethernet interface, virtual ethernet interface, we don't advise wireless interfaces
INTERFACE_NAME = "eth0"; # STRING, interface name, YOUR NETWORK CONFIG HERE
IPV4_ADDRESS = "read"; # STRING, CIDR or "read to let app read interface configured IP address
