Canon VB-C300 Administrator's Manual page 278

Messages List
Error Number: Error Description
WV407: Recording-mode streams
unavailable
WV408: Conflict of recording-mode
streams
WV601: No audio transmission
9-36
The following settings were configured for the stream for
recording.
a) JPEG recording at over 10fps
b) MPEG-4 recording
c) Image upload function is activated on VB-C500VD/VB-C500D/
VB-C60
While connecting using the stream for recording, another request
for the recording stream was received.
Audio transmission from the camera server is disabled.
Cause