Zhone IMACS 8000 User Manual page 693

PVC name must be unique.
The current PVC name is already in use. Enter a different name.
PWAN must be in standby before making changes
Changing something on an individual PW provisioning is not allowed unless the PWAN
appearance is placed to stdby first.
PWE Switch Failed No ACT or RDNT card.
Attempting to do a hardware switch to the backup card will not work if there is no RDNT card,
the RDNT card is not ready or the link to the standby card is down.
PWs exist cannot change mode
A PWAN appearance is in stdby, and the user has tried to change the TYPE from PWAN to
WAN. This is not allowed if a PW exists on the PWAN.
RATE = 19.2 must have DATA = 8 for adpcm or hlink.
If you set the SRU card port rate to 19.2 kbps, you also must set the number of data bits for
that port to 8.
Redundancy requires WAN Model 8014 in Slot W4.
Your system must have an 8014 WAN Card in slot W4 for WAN redundancy operation.
Redundancy switchover is complete.
You have asked the system to switch to the redundant WAN card, and the switchover was
successfully completed. (This is not an error message; it normally appears after you initiate
the switchover.)
Redundant CPU.
The current CPU card is the redundant card.
Reference Guide B-19