DS-KD8003 - DS-KV8113 - DS-KV8213 - DS-KV6113 - DS-KV8413 and .... integration Hikvision HikConnect Video intercom doorbell

Just so I understand correctly, I have to peel off the cable get 2 wires (which are the POE NOT to take?) then soldering to 2 wires that have the doorbell signal?

BTW which are they ??.. Relay ouput I think is to OPEN DOOR?? Or perhaps using this CALL LINKAGE (last picture?)