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Osmocom Conferences (OsmoDevCon, OsmoCon, OsmoDevCall): 2023-01-18: The ice40-usbtrace OSHW USB protocol tracer

Added by laforge 17 days ago

we're happy to announce the next incarnation of OsmoDevCall.

This time, tnt will be presenting on the ice40-usbtrace OSHW USB protocol tracer

In case you never heard about ice40-usbtrace before: It's a low-cost full-speed USB protocol tracer built around the iCE40 FPGA (git repo).

When: Wednesday, January 18, 2023 from 20:00 CET

Time Topic Who
20:00 Meet and Greet everyone
20:10 ice40-usbtrace OSHW USB protocol tracer tnt
21:00 USSE (Unstructured Supplementary Social Event) everyone

Where: https://osmocom.org/OsmoDevCall (Big Blue Button of https://franken.de/)

Retronetworking: 2023-02-01: DATEX-L, the German CSPDN

Added by laforge 17 days ago

We're happy to announce the next incarnation of RetroNetCall, the retronetworking oriented spin-off of OsmoDevCall

This time, laforge will be presenting on DATEX-L, the German circuit-switched public data network which existed from 1967 (!) onwards.

For more background see CSPDN__Datex-L.

Topics include (not limited to)
  • timeline / history
  • network architecture
  • applications

When: Wednesday, February 1, 2023 from 20:00 CET

Time Topic Who
20:00 Meet and Greet everyone
20:10 Datex-L, the German CSPDN laforge
21:00 USSE (Unstructured Supplementary Social Event) everyone

Where: https://osmocom.org/RetroNetCall (Big Blue Button of https://franken.de/)

Osmocom Conferences (OsmoDevCon, OsmoCon, OsmoDevCall): 2022-12-21: USB hub for device testing

Added by laforge about 2 months ago

we're happy to announce the next incarnation of OsmoDevCall.

This time, tsaitgaist will be presenting on USB hub for device testing.

When: Wednesday, December 21, 2022 from 20:00 CET

Abstract:

During hardware development and testing you often have numerous additional devices attached to it: serial debugger, programmer, logic analyzer, and so on.
A commercial USB hub should be enough handle that, but it often comes with limitations.
So why not have a USB hub designed for assisting in hardware development and testing: flat 7 ports, impedance controlled, with current and ESD protection, and remote power control for USB and higher voltages.
The result is open source and available at https://git.cuvoodoo.info/usb_hub.

Time Topic Who
20:00 Meet and Greet everyone
20:10 USB hub for device testing tsaitgaist
21:00 USSE (Unstructured Supplementary Social Event) everyone

Where: https://meeting5.franken.de/b/har-xbc-bsx-wvs (Big Blue Button of https://franken.de/)

Misc DECT hacks: New DECT research / playground

Added by laforge 2 months ago

Millenia (on the IT timescale) after deDECTed and about a decade after the now abandoned OsmocomDECT project, a group of people in and around Osmocom started to play with DECT again. There's no big plan, or no specific goal, other than getting more hands-on hack value with consumer DECT hardware, at its lowest levels.

It started with some innocent ringtone-hacking on a Gigaset C430 by manawyrm, followed by a much appreciated fix for the long-standing bug of Gigaset DECT phones radically over-charging (and eventually killing) their NiMH batteries (see Gigaset_C430_Hacking).

Initially, this required un-soldering and re-programming the SPI flash. After the debug UART was identified on the two test pads accessible from the battery compartment, manawyrm and tobleminer have figured out how to load code into the processor (see also ChipsUsed). Some initial related tools have been created and collected in the https://github.com/TobleMiner/dialog-sc14441-uart-boot repository. Using this you can execute your own code on the Gigaset C430, C300 and likely many other DECT phones using the Sitel (formerly NatSemi, now Renesas SC14xxx chipset family. Those who have had an eye on DECT for a longer time will recognize that this family of chips was also used in both the deDECTed as well as the OsmocomDECT CoA driver. It is also used in the Aastra/Mitel RFP base stations (see this OsmoDevCon2019 talk on RFP base stations and the 36C3 #mifail talk).

It's yet unclear where this will lead to. But it definitely is nice to see some people excited about playing with DECT devices again. If you want to follow developments in real-time, join us on the #osmocom IRC channel on https://libera.chat/

Retronetworking: 2022-12-07: RetroNetCall on ISDN B channel protocols

Added by laforge 2 months ago

We're happy to announce the next incarnation of RetroNetCall, the retronetworking oriented spin-off of OsmoDevCall

This time, laforge will be presenting on ISDN B-channel protocols: V.110, V.120, X.75, H.221

Topics include (not limited to)
  • description of the respective protocol
  • look at a protocol trace
  • status of open source implementations

When: Wednesday, December 7, 2022 from 20:00 CET

Time Topic Who
20:00 Meet and Greet everyone
20:10 ISDN B-channel protocols laforge
21:00 USSE (Unstructured Supplementary Social Event) everyone

Where: https://osmocom.org/RetroNetCall (Big Blue Button of https://franken.de/)

Osmocom Conferences (OsmoDevCon, OsmoCon, OsmoDevCall): 2022-11-16: MS/BS power control support in OsmoBSC/OsmoBTS

Added by laforge 3 months ago

we're happy to announce the next incarnation of OsmoDevCall. Based on the recent polls, the timing has shifted to every 3rd wednesday of the month.

This time, fixeria will be presenting on MS/BS power control support in OsmoBSC/OsmoBTS.

For those not entirely 3gpp-acronym-savyy: That's how the uplink (phone -> network) and downlink (network -> phone) transmit RF power level is adjusted during an active call in GSM.

When: Wednesday, November 16, 2022 from 20:00 CEST

Time Topic Who
20:00 Meet and Greet everyone
20:10 MS/BS power control support in OsmoBSC/OsmoBTS fixeria
21:00 USSE (Unstructured Supplementary Social Event) everyone

Where: https://meeting5.franken.de/b/har-xbc-bsx-wvs (Big Blue Button of https://franken.de/)

SIMtrace 2: Video Recording of SIMtrace2 tutorial available

Added by laforge 3 months ago

Some weeks ago, there was an OsmoDevCall presenting a SIMtrace2 Tutorial.

The video recording of this has now been edited and subsequently has been published at https://media.ccc.de/v/osmodevcall-20221019-laforge-simtrace2-tutorial

The PDF slides can be found at https://gitea.osmocom.org/laforge/laforge-slides/raw/branch/master/2022/osmodevcall-simtrace2/simtrace.pdf

We invite any new users of SIMtrace2 to have a look at this tutorial to get their setup going.

Cellular Network Infrastructure: Osmocom to receive funding from OpenTechFund

Added by laforge 3 months ago

We're happy to announce that sysmocom has achieved to obtain funding from Open Technology Fund for a variety of enhancements and improvemnts of the Open Source Cellular Network Infrastructure sphere.

The funded activities are in the following areas:

  • Better integration between the Osmocom 2G/3G core network elements and the open5gs 4G EPC (evolved packet core)
  • Improving the stability, quality and maturity of the open5gs EPC by implementing functional test suites in TTCN-3
  • Establishing interoperability with various base station hardware
  • Support three trial deployments in rural Mexico with our partner Rhizomatica
  • Organize a series of webinars for security researchers on how to use our tools for furthering their research projects

See also the project description at the OpenTechFund website

We'd like to thank OTF awarding funding to our proposal.

We'd also like to thank Rhizomatica and specifically Peter Bloom for all his help in putting together the proposal.

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