Automated SIM switching enables you to reduce your resources when performing automated mobile, SIM or mobile application tests. The system supports you in implementing automated software tests on mobile devices that require SIM card multiplexing or roaming tests of cell phones. The Matrix SIM Switchbox MSSB connects up to 32 SIM to up to 4 mobile devices or terminals on the size of a DIN A5 page (15 x 22 cm). The system supports you in implementing automated software tests on mobile devices that require SIM card multiplexing or roaming tests of cell phones. Switching is initiated through a graphical interface (web GUI) or by using the REST API with HTTP commands. Select between the following versions according to your requirements:
  • MSSB 4×1 multiplexing 4 SIMs to 1 device,
  • MSSB 8×4 multiplexing 8 SIMs to 4 devices,
  • MSSB 16×2 multiplexing 16 SIMs to 2 devices and
  • MSSB 32×1 multiplexing 32 SIMs to 1 device,.


All MSSB can be ordered for LOCAL or LAN setup. For local or direct access you can can control MSSB via the USB interface. In remote setups, you can control the MSSB device also via LAN and use the graphical user interface or HTTP commands to select the SIMs. MSSB 4×1 can be controlled via bluetooth for easier usage


Matrix SIM Switchbox adapts perfectly to your automated SIM Switchingprocesses in testing scenarios. Our system is tested with Headspin, Perfecto/Perforce and Digita l.AI environments. 


The REST API enables you to control the MSSB systems with HTTP commands. The control unit constantly monitors the status of assigned SIM and devices and offers collision prevention and XML-return values.

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Matrix SIM Switchbox (MSSB) Admin is our web-based panel to to control the Matrix SIM Switchbox. You can assign the SIMs in a graphical user interface (GUI) to the installed mobile devices. MSSB Admin supports you also in loading the SIMs and setting user-friendly names for daily usage:


  • MSSB Admin offers host based control of MSSB systems
  • Software interface provides external control of all MSSB functionalities and key features
  • User friendly and cost-effective integration in existing systems

MSSB 4x1

The MSSB 4×1 is especially designed for mobile usecases.
It is small, lightweight and offers a remote control via e.g. via an app. This allows tests, such as those required for stationary and mobile operator
benchmarking, to be implemented easily and costeffectively.
A normal USB power bank is suitable as power supply.


Professional testing of mobile devices and apps in combination with modifiable network network conditions and different SIM cards can can be a challenging request.
The setup consists of:
  • Matrix SIM Switchbox MSSB
  • Radio field simulation and
  • Air Interface Adapter (attenuator unit)
  • Shielding box slide-in system
Use our proven system to boost your testing capabilities.


System presentation

Implementation of proof-of-concept projects (PoC)

Training and support

Development of complete test cases as
managed services

Purchase, rental and leasing