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@@ -42,9 +42,15 @@ head_inline: "<style> ul { padding-bottom: 1em; } </style>"
   - [Sending SMS in Open5GS LTE Networks using the SGs Interface and OsmoMSC](https://nickvsnetworking.com/sending-sms-in-open5gs-lte-networks-using-the-sgs-interface-and-osmomsc-with-smsos/)
   - [OsmoMSC and Open5GS MME – SGs Interface for CSCF / InterRAT Handover](https://nickvsnetworking.com/osmomsc-and-open5gs-mme-sgs-interface-for-cscf-interran-handover/)
   - [Static IPs for UEs](http://nickvsnetworking.com/open5gs-epc-static-ip-addresses-for-ues-apns-subscribers/)
+  - [Open5GS without NAT](https://nickvsnetworking.com/open5gs-without-nat/)
+  - [Basics of EPC/LTE Online Charging (OCS)](https://nickvsnetworking.com/basics-of-epc-lte-online-charging-ocs/)
+  - [Backing up and Restoring Open5GS](https://nickvsnetworking.com/backing-up-and-restoring-open5gs/)
+  - Diameter Routing Agents - [Part 1](https://nickvsnetworking.com/diameter-routing-agents-why-you-need-them-and-how-to-build-them-part-1/), [Part 2](https://nickvsnetworking.com/diameter-routing-agents-why-you-need-them-and-how-to-build-them-part-2-routing/), [Part 3](https://nickvsnetworking.com/diameter-routing-agents-part-3-building-a-dra-with-freediameter/)
 
 - @s5uishida
   - [Open5GS EPC & OpenAirInterface UE/RAN Sample configuration](https://github.com/s5uishida/open5gs_epc_oai_sample_config)
   - [Open5GS 5GC & UERANSIM UE/RAN Sample Configuration](https://github.com/s5uishida/open5gs_5gc_ueransim_sample_config)
   - [Open5GS & UERANSIM - Select nearby UPF according to the connected gNodeB](https://github.com/s5uishida/open5gs_5gc_ueransim_nearby_upf_sample_config)
   - [VoLTE and SMS Configuration for docker_open5gs](https://github.com/s5uishida/docker_open5gs_volte_sms_config)
+  - [SCP Indirect communication Model C](https://github.com/s5uishida/open5gs_5gc_ueransim_scp_model_c_sample_config)
+  - [Monitoring Metrics with Prometheus](https://github.com/s5uishida/open5gs_5gc_ueransim_metrics_sample_config)