Message Cause and SolutionUnable to register, the contactlist is full.• The contact list has reached its maximum capacity.→ Delete unneeded contacts (Page 84).Invalid IP Address. • The format of the IP address that you entered is invalid.→ Enter the IP address correctly, in the format XXX.XXX.XXX.XXX(decimal values separated by periods). For values of only 1 or 2 digits,enter these numbers as they are. Do not enter like [.001].Example: The IP address is [192.168.0.1].– Correct entry: [192.168.0.1]– Wrong entry: [192.168.000.001]Multicast or broadcast addresses cannot be used.Invalid Subnet mask. • The input subnet mask is invalid.→ Enter a valid subnet mask. For values of only 1 or 2 digits, enter thesenumbers as they are. Do not enter like [.000].Example: The subnet mask is [255.255.255.0].– Correct entry: [255.255.255.0]– Wrong entry: [255.255.255.000]Invalid Default Gateway. • The input default gateway is invalid.→ Enter a valid default gateway. For values of only 1 or 2 digits, enterthese numbers as they are. Do not enter like [.001].Example: The default gateway is [192.168.0.1].– Correct entry: [192.168.0.1]– Wrong entry: [192.168.000.001]Invalid Date/Time. • Enter a date within the valid parameters.→ Enter a date between January 1, 2012, and December 31, 2035.PC is not connected.Check the connection.• A cable or cord is not properly connected.→ Check that all cables to the unit are connected properly (Page 68).• The computer is not turned on.→ Turn on the computer.• The computer is not set to output from its external monitor video outport.→ Change the computer’s settings so that video is output from the externalmonitor port.Sub-Camera is notconnected.Check the connection.• A cable or cord is not properly connected.→ Check that all cables to the unit are connected properly (Page 74).• The sub video camera is not turned on.→ Turn on the sub video camera.Sub-Camera source is notcompatible.• A cable or cord is not properly connected.→ Check that all cables to the unit are connected properly (Page 74).• The signal input from the sub video camera is invalid.→ A valid signal cannot be received from the connected sub video camera.Contact your dealer.130 User ManualAdditional Information