The visonic bell connections are standard I thought if you download any of there manuals it will show
Also do you have engineer access to the alarm panel?
Is the alarm panel ex ADT ? Or you bought new yourself
No not good enough , down vote when you think it is to be down voted , don't down vote just because you get one , and don't look at who down voted you lol
You could also get a local installer independent house basher to do it , better than electrician, unless he always was an alarm fitter before going live
Very old panel you should get rid of it , if you do get rid of it can you upload a YouTube video of it being smashed , no point anyone else having it incase it's got an electrical fault and you could liable