Avaya Communication Manager Administrator's Manual page 1556

Screen Reference
Valid entries
1 to 64
Sys Prf
System Preferred servers will have a higher value than any other Local Preferred server
independent of community or administered priority value. If multiple System Preferred servers
are administered, the server with the highest administered priority value will have the top priority
on an IPSI's list.
Valid entries
y/n
Loc Prf
After the System Preferred preference, the Local Preferred preference has the second
highest value within an IPSI community. When multiple Local Preferred servers are
administered within the same community, the priority score is used to determine which server
will have the higher priority in the IPSI's list.
Valid entries
y/n
Loc Only
A Local Only server only advertises to the IPSI within its community. The Local Only
preference has no value. If a Local Preferred server (outside its administered community),
advertised to an IPSI in the same community as a Local Only server, the priority score of each
server would determine its ranking on the IPSI's priority list. Servers set to Local Only do have
the option of also using the Local Preferred setting to increase its priority on a local IPSI's list.
1556 Administrator Guide for Avaya Communication Manager
Usage
Enter the Network community number in this field. This field cannot be
blank.
Usage
Use this option when the goal is to keep as much of the system network
intact as possible, allowing one ESS server to replace the Main server. If
this field is set to y, then Local Preferred and Local Only default to n and
cannot be changed. If this field is n, then Local Preferred and Local
Only can be either y or n. Default is y.
Usage
Use this option when you want the ESS server to accept the request for
service from IPSIs co-located in the same geographical region, WAN/LAN
segment, district, or business unit. Default is n.