Not sure the manual is going to do you any good, you're not going to hook this up to a full blown switch anyway are you? All you have is the cord board for the PBX. What I'd try is just toning things out, shouldn't be too hard to hook up a tip and ring some control and lamp leads. I never worked on any cord boards off a PBX so I'm not sure about the switch, but that's the only way it would make sence to me.

Retired phone dude