Philips SOPHO K104 query

[zr6kil]

Hi all.
I obtained a working K104 unit. It's basically a system designed for SOHO application. One exchange line and four extensions. But....I have no documentation. I figured out how to do the wiring but I do not know how to program the unit. It apparently has a lot of features. My biggest problem at the moment is I do not know how to pick-up an outgoing line to make a call ??? I've tried all possible combinations? Maybe I need to do something to the wiring?

Any help, hints or docs would be greatly appreciated.

Regards,
Clint.

 

[zr6kil]

OK, I made another discovery regarding this topic.
This system seems to be only working with at least 3 wire phones. The third wire works from the FLASH button.
(In earlier days old PABX systems used to work with 3 wire phones where the 3rd wire produced an earth to put calls on hold or to transfer them.) By pressing the FLASH button after you picked up the handset you get connected to the outside line.
Does anyone know if this system can then work on 2 wire phones or not? Maybe via DIP switches or programming?