DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Additional Maintenance Procedures
6-31Preventive Maintenance
6
Preventive Maintenance
The following preventive maintenance procedures should be followed when
visiting customer sites. The chart that follows shows a sample of the Preventive
Maintenance Log. Whenever you complete a preventive maintenance procedure,
be sure to fill in the information on the log form before you leave the customer’s
premises.
Air Filters
Air filters should be inspected annually. If a filter is dirty or clogged, first tap it on
the ground. If the filter is still dirty or clogged, then wash it with warm water and a
mild detergent. A vacuum cleaner can be used if one is available. If there is no
facility for washing or vacuuming the air filter, then replace the filter. Refer to
‘‘CABINET (Cabinet Sensors)’’
maintenance documentation for information on air
filters and fans.
56 Laboratory test tone 2
57 Disable echo supervision dial tone
58 7 seconds of answer tone
59 4 seconds of answer tone
60 Restore music (or silence)
61 Warning tone
62 Forced music tone
63 Zip tone (first of 2 sent)
64 Incoming call ID (first of 2 sent)
65 Tone on hold
66 CO dial tone
67 Repetitive confirmation tone
68 Conference/bridging tone
Table 6-5. System Tone Identification Numbers — Continued
Number Description
Continued on next page
