Nortel Meridian 1 Planning, Installation And Operating Instructions page 475

Page 456 of 536
Table 62
Technical services non-emergency classifications
Class Degree of failure
S1 Failure which affects service
S2 Intermittent failure which
affects service
NS Failure which does not affect
service
553-3121-210 Standard 3.0
Chapter 25 — Fault locating and clearing
January 1999
Symptoms
Software or hardware trouble directly and
continuously affecting user's service or customer's
ability to collect revenue
Problem that will seriously affect service at
in-service or cut-over date
Software or hardware faults that only intermittently
affect service
System-related documentation errors which directly
result in or lead to impaired service
Documentation errors
Software inconsistencies which do not affect service
Hardware diagnostic failures (not defined above)
which cannot be corrected by resident skills
Test equipment failures for which a backup or
manual alternative can be used
Any questions concerning products