If These Messages AppearMessage Cause and SolutionCall FAILED. Encryptionsettings (On/Off) must match.Please change the encryptionsetting on one side and tryagain.• The encryption settings do not match those of the other party in a videoconference call.→ Change the encryption settings to match those of the other party.(Page 64, Page 72)Call Failed due to wrongencryption password. Pleasecontact your installer.• The encryption password settings do not match those of the other partyin a video conference call.→ Contact your dealer.Check the Main Cameraconnection.• A cable or cord is not properly connected.→ Check that all cables to the KX-VC500 are connected properly.(Page 15)• The signal input from the main video camera is invalid.→ A valid signal cannot be received from the connected main videocamera. Contact your dealer.Unable to register, the contactlist is full.• The contact list has reached its maximum capacity.→ Delete unneeded contacts. (Page 59)Invalid IP Address. • The format of the entered IP address 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.Invalid Default Gateway. • The input default gateway is invalid.→ Enter a valid default gateway.Invalid Date/Time. • Enter a date within the valid parameters.→ Enter a date between January 1, 2009, and December 31, 2035.PC is not connected.Check connection.• A cable or cord is not properly connected.→ Check that all cables to the KX-VC500 are connected properly.(Page 49)• 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.94 User ManualAdditional Information