User`s guide

IMPORTANT: The administration of fictitious System 25 voice terminal
ports causes the following message to be entered as a Permanent
System Alarm and also causes the Alarm light on the Attendant
console to flash following a Warm Start of System 25:
XXXXX Port Board Missing But Administered
(XXXXX represents the port number of the fictitious port.)
The Attendant Alarm light can be turned off by removing the
Permanent System Alarm message through System 25 administration.
The System 25 translations for the fictitious port(s) must not be
removed or the CMS contingency plan, described above, will not
work.
Optional CMS Features 2-9