12 years later. And along comes another person asking about the same set of unknown terminal contacts that do not seem to exist anywhere!
Edit: If you have terminals:
C 1 2 L - A +
See this post for the replacement unit you need...
Hi. Does anyone recognise the make/brand of this old entry phone from these terminals? I'm asking to try and help out a friend, and have requested more pics.
I've looked at dozens of wiring schematics but none have this set of terminals.
It's from a multi unit ex-council apartment in London.