Open Source Mobile Communications

Information about the Altair "FourGee" 3100 - 3800 LTE modems

Information collected on Huawei cellular modems

Information / Research on the internals of Qualcomm Linux based cellular modems available from Quectel and other vendors

legacy and/or unmaintained CNI projects

Osmocom Core Network (CN). This includes Free/Open Source Software implementation of cellular core network elements, such as OsmoMSC, OsmoSGSN, OsmoHLR, OsmoGGSN and others.

Distributed GSM architecture, suitable for de-centralized, autonomous networks with intermittent connectivity.

USIM applet and HLR feature to allow obfuscating the IMSI of a subscriber,
without the need to change any intermediate core network component.

git://git.osmocom.org/imsi-pseudo
git://git.osmocom.org/sim/sim-tools

A program to record traffic on E1 or T1 TDM interfaces to disk. This provides tcpdump-like functionality for TDM interfaces. You can configure on a per-timeslot bases if the raw bitstream should be recorded, or if a HDLC decoder should be used. Requires a high-impedance tap and two E1/T1 ports per link you want to monitor (one for Rx, one for Tx)....

This is a python-based test framework by which we can control a set of BTSs and Modems to execute full-system end-to-end verification tests. We use this within Osmocom to du full end-to-end testing with all our network elements and real BTS + RF + Modem Hardware....

Osmocom Media Gateway, to manage, connect and optionally transcode voice streams between different network elements such as BTSs and external entities like SIP. It is typically co-located with both OsmoBSC and OsmoMSC and controlled by them via IETF MGCP (Media Gateway Control Protocol)....

Osmocom Serving Mobile Location Center

Osmocom Radio Access Network (RAN)

Erlang MGW NAT/MASQ implementation

Erlang implementation of a TCPAP+MAP codec (encoding/decoding). You most likely want to use signerl, not this.

Erlang implementation of SCCP (ITU-T Q.71x)

Erlang implementation of M2UA/M3UA/MTP3/SCCP/ISUP codec + utils

Erlang implementation of TCAP + MAP Signalling Protocols, runs on top of osmo_ss7 and osmo_sccp

This is about various projects implementing diffrent types of E1/T1 interfaces, including osmo-e1-xcvr, as well as a passive e1-tracer and icE1usb, our latest ICE40 FPGA based USB-E1 adapter.

The Osmocom E1/T1 tap adapter allows you to tap into the communication of an E1/T1 line.

This is useful for tracing/analyzing communications on any type of E1/T1 based interface, such as A-bis, A and core network interfaces in GSM networks, as well as classic ISDN networks....

This is a small break-out board for M.2 (NGFF) type cellular / WWAN modems.

• mini USB 3 socket for connection to a USB Host (like your PC/Laptop or Embedded System)
• 5V DC input for power supply (USB supply usually insufficient for a modem)...

Various uncategorized small hardware projects that don't each deserve their own redmine project

This is a small break-out board for miniPCIe (mPCIe) type cellular / WWAN modems.

• mini USB socket for connection to a USB Host (like your PC/Laptop or Embedded System)...

A small USB UART board with two CMOS UARTs exposed on 2.54mm headers.

The logic voltage can be manually selected at 1.8, 2.3, 2.5, 2.8, 3.0 or 3.3V

OpenVizsla is a Open Hardware FPGA-based USB analyzer for USB Low-Speed, Full-Speed and High-Speed. Unlike other similar devices on the market, hardware design files are available as well as full source code for the firmware and client software of the device....

The osmo-clock-conv is a small board for low-jitter conversion of a sine clock into a square clock, based around the LTC6957-4.

Osmocom Clock Generator board, using the Si5351C clock synthesizer to derive up to 8 different clocks from a single clock reference, such as a 10MHz GPS-DO or OCXO.

UmTRX is a dual-channel wide-band SDR transceiver that is designed to be used with ​OpenBTS and ​OsmoBTS GSM base stations. Given its SDR architecture UmTRX can easily be used with many other RF applications, and a combination of FPGA and FPRF (Field-Programmable RF) technology plus the ability to process data on a CPU or a DSP, makes it an extraordinarily flexible platform. See UmTRX....

Issues that have to do with our core testing infrastructure (TTCN3 issues, docker setup) go here.

Issues specific to one test component should still be filed in the respective projects (e.g. osmo-msc).

This project is an attempt at an independent set of publicly-available documentation of the Ericsson RBS6xxx family of base station products.

The GSM Auido Pocket Knife is a small tool that can encode and decode all of the GSM codecs and can convert between various different frame formats, such as the RTP payload formats, those used by the TI Calypso DSP, the Racal 61x3 testers, etc. You can use it as a RTP sink to play back a RTP stream from OsmoBTS. ...

This website is intended to collect information about publicly-known security issues and other bugs of mobile communications systems, with a particular focus on the 3GPP-specified protocol layers of GSM, GPRS, EDGE and WCDMA. We collect informationon issues at any protocol layer and at any of the interfaces, i.e. the Um air interface just as well as A-bis, A, IuB, C or any of the SS7/MAP/TCAP based core network interfaces....

This project targets a C-Language library providing an implementation and interface to manage a Modbus node in a Modbus bus.

This library relies heavily on libosmocore library and it is aimed at being used by applications using that same library.

The Modbus specs can be found here: https://www.modbus.org/specs.php...

Osmocom PCAP utilities, such as a distributed client/server capture architecture. It allows a number of PCAP probes on remote hosts, feeding captured packets to a central host in the network. Each probe can have different capture filters. There are multiple options for the protocol between probe and central host....

Scalable Smalltalk/Pharo SMSC with SMPP input and SMPP and SS7 output.

Osmocom Call Control. A new, protocol-agnostic way of interfacing call control of various different protocols with each other. Currently used within the osmocom-analog domain and with several endpoints.

Endpoints

• osmo-cc-alsa-endpoint
• osmo-cc-sip-endpoint...

This is the A-bis interface library as used by OsmoBSC/OsmoNITB

This is a network interfacing library intended to abstract all kinds of signalling + user payload interfaces, including Abis/IP (IPA), A/IP (SCCPlite), as well as the Osmux protocol

De- / encode RANAP messages and provide Iu client implementations (to OsmoMSC for IuCS and OsmoSGSN for IuPS).
Lives in the osmo-iuh git repository.

Osmocom SCCP + Sigtran (M3UA, SUA) library

This covers the libosmocore.git repository including libosmocore, libosmogsm, libosmogb, libosmoctrl, libosmocodec, libosmocoding.

This is the Osmocom version of libsmpp34, an implementation of the SMPP Protocol v3.4

This is a more experimental, work-in-progress port of the OsmocomBB Layer1 to the Nuttx RTOS

FidoNet related stuff

Here is the generic Linux Modem. This modem is totally software, it means that all the DSP stuff is done by the main CPU, as in some so called "winmodems".

• Linmodem is also a research project. It contains all the necessary stuff to test new digital communication algorithms. The line simulator and the X11 interface can be used to simulate a complete communication chain....

UUCP and UseNet related stuf

Z-Netz related stuff

Gnuradio blocks and tools for receiving GSM transmissions

Unified gnuradio input/output block for a variety of SDR devices, including FUNcube Dongle, OsmoSDR, RTL-SDR, MSi2500, SDRplay, SDR-IQ, AirSpy, rad10, HackRF, bladeRF, USSRP/UHD, UMtrx, RedPitaya, FreeSRP, ...

C-language library for common DSP (Digital Signal Processing) primitives for SDR (Software Defined Radio). They are part of the Osmocom project.

Osmocom project to (ab)use the DAC inside the FL2000 USB 3.0 VGA adapter to transmit radio frequency

RF delay simulator using the ADI Pluto SDR

OsmoSDR is a (now obsolete) 100% Free Software based small form-factor inexpensive SDR (Software Defined Radio) project.

Software project for [ab]using DVB-T USB receivers based on RTL2132 as inexpensive SDR receivers

Firmware for Smart Card Reader implementing the USB CCID (Circuit Card Interface Device) Specification, based on Atmel ASF4. Used on the sysmoOCTSIM 8-way CCID reader.

osmo-remsim is the Remote SIM software suite used to manage a set of phones/modems and a set of SIM/banks as well as the dynamic mappings of SIM cards to their remote phones/modems.

• osmo-remsim-client: physically emulate SIM card at modem/phone using SIMtrace2 cardem or sysmoQMOD...

Osmocom COS (or short OsmoCOS) is an abandoned attempt at creating an experimental Card Operating System for smart cards, specifically for those based on the ChipCity CC32RS512 microcontroller.

pySim is a small command-line tool to program(write to) a variety of programmable sim cards.

Osmocom SIMtrace is a hardware device and associated firmware + host software to trace the communication between phone and SIM card.

2nd generation SIMtrace: Uses same circuit board / peripherals as SIMtrace 1, but contains a SAM3 (Cortex-M3) instead of the SAM7 (ARM7TDMI) microcontroller. The SAM3 has a faster CPU and its internal USB peripheral offers more endpoints. This can be used for more features in the devie firmware, such as man-in-the-middle....

A software implementation (simulation) of a SIM card