IC Realtime 7- inch Color Indoor Monitor (IHD7310) - Manual (Page 14)

I C R E A L T I M E S E C U R I T Y S O L U T I O N S
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 Navigate on the IH-7310 to 'Settings'  'Project Settings' 'Network'. Here you will input the IP
address of the outdoor camera (IHC-6260). Tap the 'enable' option to turn that camera to being active.
You should now be able to make a call from the outdoor IP camera to the monitor