IP intercom: why the door station and indoor monitor cannot see each other

Common causes

• Devices are on different subnets (different IP range or mask).
• Two devices share the same IP address (IP conflict).
• Devices are not activated, or use different passwords within the system.
• The monitor has the wrong door-station address or room/apartment number.
• The switch does not supply enough PoE power.

Step-by-step check

1. Make sure every device is powered (indicators, screen).
2. Use the manufacturer tool (e.g. Hikvision SADP) to find all devices and check IP, mask and gateway.
3. Put all devices on the same subnet with unique addresses.
4. Activate the devices and set the main door station in the monitor settings.
5. Check that room/apartment numbers match.
6. Update firmware only with official manufacturer versions and compatible pairs.

If the problem remains after these checks, call Select Security: 041 12 52 62, 033 12 52 62.