News: MFF2 ZIF Adapter


sysmocom announces the availability of the new MFF2 ZIF Adapter, an adapter to use MFF2 SIMs in regular SIM slots.

As Machine Form Factor (MFF) SIMs - which are usually soldered directly on devices PCB - are gaining more and more momentum in IoT, sysmocom reacted on the demand for an adapter to test, debug and analyze such SIMs with existing tools like our SIMtrace board but also other devices with usual SIM card slots.

The Adapter offers the same FPC connector as our SIMtrace board and uses the same adapter cables (not included).

The MFF2 ZIF Adapter is in stock and can be ordered via the sysmocom webshop.

News: Osmocom icE1usbn E1 interface for USB


Today, sysmocom announces the availability of the Osmocom icE1usb, an E1 USB interface.

With it's built-in GPS-DO, the Osmocom icE1usb can provide a highly stable reference clock, which is for example required by most legacy GSM/2G base stations from major vendors such as Ericsson, Nokia and the like.

Osmocom icE1usb is 100% Open Source Hardware and requires no special-purpose silicon ICs like E1 framers or line interface units, which are increasingly difficult to source as E1/TDM technology is becoming more of a niche.

The icE1usb are in stock and can be ordered in the sysmocom webshop.

News: sysmoISIM-SJA2 succeeds sysmoUSIM-SJS1


After many years of supplying the world wide community of cellular researchers, academia and operators of private cellular networks for many years with the programmable SIM card sysmoUSIM-SJS1, it is time for a change:

Today, sysmocom announces the availability of the sysmoISIM-SJA2, the successor product to the sysmoUSIM-SJS1.

The major improvements include:

  • ISIM application for IMS/VoLTE (in addition to SIM + USIM applications)

  • pre-installed ARA-M applet for use with Android Carrier Privileges

  • only one product covering 2FF, 3FF and 4FF form-factor

  • All 3GPP-specified 5G related files on card

The new card of course includes all of the major features of its predecessor.

To read more information about the sysmoISIM-SJA2, please visit sysmoISIM-SJA2.

The cards are in stock and can be ordered via the sysmocom webshop

News: M.2 WWAN modem break-out board

More and more modern cellular modems are being released not in the classic miniPCIe form-factor, but in M.2 (NGFF). Particularly for LTE-Advanced and 5G/NR, this is a requirement as only M.2 has USB 3.0 and a PCIe lane for higher connection speeds to the host processor.

Following the success of sysmocom’s miniPCIE WWAN break-out board, we have now released a M.2 WWAN modem break-out board. It can host any M.2 cellular modem and exposes not only the USB 3 super-speed signals, but also the PCIe lane. With the included cable and PCIe adapter, it can be connected to any PCIe x1 slot in a PC or embedded computing board.

To read more information about the M.2 WWAN modem breakout board, please visit the M.2 WWAN modem break-out board product page.


News: sysmoOCTSIM product

The success of sysmocom’s sysmoQMOD board made us think about a reliable, compact and economic solution to serve multiple SIM cards for sysmoQMOD or other targets that work with remote SIM cards

The sysmoOCTSIM is a carrier board for up to 8 SIM cards in 2FF (Mini-SIM) format.

sysmoOCTSIM can be combined with the sysmoQMOD (quad mPCIE modem with built-in remote SIM function) and the osmo-remsim software to build complete end-to-end remote SIM systems. This allows the alternating use of multiple SIMs with each of the modem by switching between those SIMs via software.


To get more information about the sysmoOCTSIM, please visit the sysmoOCTSIM product page

About sysmocom

sysmocom fills a gap in the telecommunications market for development, products and services. The existing equipment and service vendors are offering products by large companies to large companies. If you are a small start-up, local/regional MNO or MVNO, you will have found it incredibly difficult to satisfy your needs from the large Telco equipment vendors.

You don't have to have a big budget in order to roll your own GSM network. We have first-hand expertise in the right mixture of Open Source technologies like OpenBSC, OsmoSGSN and OpenGGSN, economic base station technology and off-the-shelf computer hardware to solve your problems.

Even if you are a large operator, we still may have something to offer to you. You are probably used to the fact that your equipment supplier tells you all kinds of things that are allegedly impossible, or require you to buy their next generation hardware even for a minor software feature change. If you have a specific request regarding analysis of your network, or interfacing equipment of different vendors: Talk to us. We will help you to find the best technical and economic solution for your problem, truly independent of any vendor bias.

Our services include

  • custom research and development in mobile communications networks and protocols, from RAN to core network

  • supplying equipment for small MNOs and MVNOs - from SIM cards over core network elements to the BSC, from picocells to small cells to macro-cells.

  • consulting and training services

  • security audits with specific focus on penetration testing of GSM protocols and interfaces

  • protocol tracers, analyzers and converters

  • development of back-haul protocol optimization

  • small GSM networks / network simulation for research, education, training, R&D and factory testing of mobile devices

  • load testing and roaming testing

  • circuit design and software/firmware development of M2M devices using GSM/GPRS/UMTS/LTE modem modules (Wavecom, Cinterion, Option, Simcom, u-blox, Quectel), GPS/GNSS receivers, etc.

  • systems for M2M device testing

  • receivers and simulators for various other radio technology like AIS and ADS-B

We're looking forward to hear from you!