[dagskarlsen]

I was able to dig out the F version of the diagram, it should be equal.
I have marked straps with red for use without master socket/adapter with capacitor. I guess it will work nice without the blue strap (try it out after the ringing is back) The other straps (black) should be left as they are, they are not important in hence of ringing, an the rest is working so do not move them. The 3.3 k ohms resistor is one we do not agree about the need, I would usually had a strap there too, and that may be worth to test out if the red straps do not solve the ringer problem. The resistor is there to reduce the load of the ringer to allow more telephones at the line at the same time. If you have a resistor there today, do not change it just because of the value, (someone has put it in to do that job described for the 3k3 resistor) but you may test to strap it.