Install libosptk4 by entering the following commands in the terminal:
sudo apt update sudo apt install libosptk4
OSP Toolkit shared library
The Open Settlement Protocol (OSP) standard defined by the European Telecommunications Standards Institute (ETSI TS 101 321) www.etsi.org. . The OSP Toolkit is an open source implementation of the OSP peering protocol and is freely available from www.sourceforge.net. It enables applications for secure multi-lateral peering. . libosptk run-time shared library needed by OSP client end applications that use OSP Toolkit.