The Visonic PowerMaster alarm is a home/office alarm. The main device connects to a centralized events servers.
The main ports used are 5001 for events notification and the 8080 for events and video images.
The information regarding ports has been found here.
Some more info on Voksenlia and on securitybydefault.
A guy has written a couple scripts to mimmic the visonic server in order to avoid it. The documentation is available for download.
To test all readings I have lauched a docker container with the previously commented scripts.
To create my docker image:
docker build powermanage_my_mock/ -t powermaster
To launch the service:
docker run -ti -p 8080:5000 --rm powermaster