YYMM = year and month the problem was reported
I = ISC for support of the site
NNNN = a sequence number of all NOIS calls for the month reported
Sites using NOIS locally would see an abbreviation for the service
reporting the problem and the ISC could be set up as something meaningful
- otherwise it would be 0.
The call ID or reference number is used to uniquely identify the call. It
is composed of the site, date reported, ISC and a log sequence number.
SSS = site abbreviation