Zhone IMA CS-200 System Reference Manual page 267

Channel test is available from WAN XCON screen.
To test a cross-connected voice circuit, go to the Cross-Connect Screen.
Circuit name must be entered.
You must enter a name for the cross-connect circuit before attempting this command.
Config. changes must be made from primary WAN.
You cannot make configuration changes to a redundant WAN port. This is allowed only on
primary WAN ports.
Duplicate prt report element.
You have asked the Print Alarms option to print the same element twice.
Empty field is not allowed.
You cannot assign a blank password on the CPU port Main Screen. Always enter
alphanumeric characters.
ENETBRI/PRI port is not installed or config.
An Ethernet BRI/PRI port is not present in the system, and is not configured.
ERROR found in the RESTORE file.
The system restore failed due to a software error. Repeat the restore, and call Technical
Support if this message reappears.
Field can NOT be MODIFIED.
You cannot edit this field.
Group already taken.
This group is already assigned.
Error Messages B-3