ISDN queue empty
One of the ISDN protocol components tried to read a message from an empty message queue. A software problem in the ISDN protocol is the probable cause of this error.
The system should continue without further problems. If further problems do occur, stop and restart the ISDN signalling process using the Custom Server Manager. If the problem persists, call Blueworx Support. When reporting ISDN software problems, take a copy of all files with names beginning es_ in the /var/tmp directory as soon as the error occurs.
White
Log, System Monitor