I put together some laser cut case designs for the Osmocom SIMtrace, Quite happy with the results. If you want to cut your own, I’ve sent the DXF files to the mailing list, and will try and add to the project. Also uploaded here as seems some folks had issues getting them from the mailing … Continue reading SIMtrace Cases
Tag Archives: Osmocom
GSM with Osmocom: OsmoSGSN for Packet Data
Configuring the Osmocom Serving Gateway Support Node (SGSN) for 2G/3G networks.
List of Open Source Evolved Packet Core (EPC) Implementations
List of Open Source Evolved Packet Core implementations
GSM with Osmocom: Handovers
A look at the Handover process between Cells / BTSs in GSM using the Osmocom stack.
GSM with Osmocom: Channel Types
When setting up the timeslots on the TRX for each BTS on your BSC, you’ll notice you have to set a channel type. So what do these acronyms mean, and how do they affect the performance of the network? GSM channels break down into one of to categories, control channels – used for signalling, and … Continue reading GSM with Osmocom: Channel Types
GSM with Osmocom: Silent SMS & Silent Calls
Depending on if you’re wearing a tin foil hat or not, silent SMS and silent calls could be a useful tool to for administering the network or a backdoor put in to track citizenry! Regardless of it’s reasons for existence, let’s take a look at what it actually does, and how we can use it. … Continue reading GSM with Osmocom: Silent SMS & Silent Calls
GSM with Osmocom: SS7 & Sigtran
SS7 Basics and Osmo-STP as a Signaling Transfer Point
GSM with Osmocom: NanoBTS
Setting up ipaccess NanoBTS on Osmocom’s OsmoBSC
Sending SMS in Open5GS LTE Networks using the SGs Interface and OsmoMSC with SMSoS
Sending SMS over LTE using OsmoMSC and OsmoHLR and the SGs interface for SMSoS
OsmoMSC and Open5GS MME – SGs Interface for InterRAT Handover & SMS
Looking into the SGi interface for Circuit Switched Fallback in LTE to use GSM/UMTS networks for Calls & SMS
GSM with Osmocom: Call routing in GSM
How call routing in GSM works and it’s application in the Osmocom suite
GSM with Osmocom Part 9: Calls & SMS at last!
So now we’ve covered the basics of what’s involved let’s get some traffic on our network. For starters we’ll need to start each of our network elements and bring up whichever BTS hardware we’re using. In order for our calls to have audio, we’ll need to set a parameter on the Media Gateway. We’ll cover … Continue reading GSM with Osmocom Part 9: Calls & SMS at last!
GSM with Osmocom Part 8: The Mobile Switching Center
Setting up the Mobile Switching Centre for a GSM network using OsmoMSC.
GSM with Osmocom Part 7: The HLR – Home Location Register (and Friends)
What the Home Location Register (HLR) does in GSM, how to set it up and configure subscribers.
GSM with Osmocom Part 6: Integrating our LimeSDR BTS with OsmoBSC
Connecting our LimeSDR based GSM BTS with OsmoBSC.
GSM with Osmocom Part 5: Software BTS with LimeSDR & osmo-bts-trx
Using a LimeSDR as a GSM BTS with Osmocom.
GSM with Osmocom Part 4: The Base Station Controller (BSC)
Configuring a GSM Base Station Controller with Osmocom stack.
GSM with Osmocom Part 3: Introduction to Osmo Software & Virtual BTS
Setting up a virtual BTS in our BSC with Osmocom.
GSM with Osmocom Part 2: BTS Basics
What’s a BTS and where do they fit into the GSM Network architecture?
GSM with Osmocom Part 1: Intro
Intro to our post series on GSM using the Osmocom stack,