MCOP Releases First Versions of MCPTT Open SDK, App
Friday, June 29, 2018 | Comments

The first versions of the Mission Critical Push to Talk (MCPTT) Open Source software development kit (SDK) and sample MCPTT app were released by the Mission Critical Open Platform (MCOP) project during the second MCPTT Plugtests this week in Texas.

The entire source code is available to download from the MCOP repository here.

The MCOP SDK and sample MCPTT app facilitate the development of mission-critical services by handling most of the complexity of MCPTT application development. The SDK implements all the protocols and signaling specified in Third Generation Partnership Project (3GPP) Release 13/14 MCPTT standards while providing neat application programming interfaces (APIs) for both app developers and user equipment (UE) vendors. The MCOP Unified Open API- MUOAPI and Integration API are publicly available at

The MCOP project is designed to remove the entry barriers of multiple technologies and proprietary platforms. It ensures interoperability and provides a catalyst for more players to enter the MCPTT market by making the business case more attractive. All MCOP components are fully compliant with 3GPP standards.

Released with the MCOP SDK, the sample MCPTT app serves as a simple proof of concept of what can be achieved in a few lines of code using the MCOP SDK. Both the app and the SDK can be remotely tested in a full 3GPP MCPTT system using the MCOP testing platform at

Additionally, a subscriber identity module (SIM)-authentication emulation plug-in following the MCOP architecture is provided for developers without access to an MCOP Integration API supporting device.

“We are really excited to release this version of the MCOP SDK to the community,” said Fidel Liberal, MCOP project coordinator. “It will allow us to validate MCOP architecture and check it is proven to be useful for different stakeholders including user equipment vendors, apps and SDK developers, researchers and new mission-critical communications practitioners.”

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