เขียนซอฟต์แวร์

I 'd like to set Raspberry Pi to be as a conference call for 4-5 points in the Lan network (by fixing IP), not connecting by Wifi. Not so much features for this project, No need feature for ringing other participants, No need for recording option. Just allow to turn on the LED computer + Rasp PI + Speaker + ... and, it can be run at conference call all the time. ,and can talk 2 way communications (Picture and sound) , Open it all the time Like CCTV. but can communicate. Equiments: 1. Raspberry Pi 3 + case+ power 2. Webcam Logitech (Mic bulit-in) e.g. [login to view URL] 3. LED Computer 4. HDMI to VGA adapter 5. Speaker 6. Lan cable Software you can use or you can use others: [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL]