Polycom RMX 1500 Administrator's Manual page 657

c
Clear the Secured RMX Communication check box.
d
Click OK.
2
Click the DNS tab.
3
Enter the Local Domain Name.
The Local Domain Name must be the same as the MCU Host Name. If the content
of these two fields are not identical an active alarm is created.
Polycom RMX 1500/2000/4000 Administrator's Guide
MCU Host
Name
Local Domain
Name
18-33