German Telephone Wiring

[Jack]

Hello Guys, I got a German telephone off of ebay and was wondering if anyone knew how to wire it. By connecting L1 and L2 I can answer the phone and hear myself on the german phone, but not on the other calling phone. Any ideas are welcome. The jack has L1, L2, A, B, C, J and the inside has L1, L2, K, Z, EK
Also it doesn't ring with just L1 and L2 but this might be a problem with the phone,
Thanks, Jack

[mienaichizu]

that's nice, I like your new phone

experts what can you say? I don't have any experience with that kind of phone

[Jack]

Bump. It seems as though these are Ericssons AC300s. I have 2 of these and they do the same thing when I wire them up, I can get a dial tone but eventually (even when the receiver is down) they give a busy signal. Any ideas on how to wire these? Thanks, Jack

[mienaichizu]

Bump. It seems as though these are Ericssons AC300s. I have 2 of these and they do the same thing when I wire them up, I can get a dial tone but eventually (even when the receiver is down) they give a busy signal. Any ideas on how to wire these? Thanks, Jack

I have also the same problem with my Ericsson type 51