FunkrufMaster is a Linux based application from DL which has to be used in combination with the Radio Paging Controller (RPC). This hardware acts as a ‘TNC for POCSAG’. Although the application has been outdated it offers a lot of options and can be used to get inspiration for further development.
Download here –> pager0.99 the FunkrufMaster manual
The menu ‘Hardware > Radio Paging Controller‘ reveals more information about the hardware.