wiring and settings

I have come across an AXIS Q6055-e from an online purchase and can't figure it out. I have never used a "POE" device but from what I can tell I need a "POE injector" so I got the 30W one and used standard cat5 patch cable from home router to injector and from that to the AXIS camera. I believe...

Note what i want to achieve: >Install a poe camera at my front door and to have this 2 options: 1.A microphone to hear what people talk.(I should hear them to my pc under my BI Software or on my iphone BI app.) 2.A speaker so i can talk back to them (Using my iphone Bi app or maybe my pc) My...