Getting to know IPfilterRules and the Flow-Description AVP
Category: EPC
Since the beginning of time, SIP has used the 2xx responses to confirm all went OK. If you thought sending an SMS in a VoLTE/IMS network would see a 2xx OK response and then that’s the end of it, you’d be wrong. So let’s take a look into sending SMS over VoLTE/IMS networks! So our […]
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Open5Gs Database Schema Change
As Open5Gs has introduced network slicing, which led to a change in the database used, Alas many users had subscribers provisioned in the old DB schema and no way to migrate the SDM data between the old and new schema, If you’ve created subscribers on the old schema, and now after the updates your Subscriber […]
I’d been trying for some time to get Kamailio acting as a Diameter Routing Agent with mixed success, and eventually got it working, after a few changes to the codebase of the ims_diameter_server module. It is rather unstable, in that if it fails to dispatch to a Diameter peer, the whole thing comes crumbling down, […]
Introducing YAML based config files for defining how PyHSS should be setup
Peculiar padding problem perplexes poor programmer.
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PyHSS Update – SCTP Support
Info on PyHSS new support for SCTP as well as TCP.
How to find a subscriber location within the network.
A look at MTU and its role in LTE and 5G Transmission.
How SR-IOV and DPDK play into faster performance of Virtual Network Functions (VNFs) for 3GPP core networks.
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Cell Broadcast in LTE
A look at how Cell Broadcast is signalling implemented between the MME and CBC in an LTE/EPC network.
Comparing the Control Plane signalling in 5GC compared to EPC.
How User Plane traffic is handled in 5GC compared to EPC
The Packet Gateway’s purpose in the EPC.
Basic processes and functions of the LTE EPC Serving Gateway (S-GW).
Assigning static IPs to UEs in Open5GS
A look at PFCP for the Sx and N4 Interfaces
Using Wireshark to filter S1 messaging to find signalling from a specific subscriber,
List of Open Source Evolved Packet Core implementations
What’s the deal with Tunnel Endpoint Identifiers and what do they do?