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Install Equipment Room Hardware
Issue 10 June 2005 59
Circuit Pack Installation
!
CAUTION:
CAUTION: When handling circuit packs or any components of a DEFINITY System, always
wear an authorized wrist ground strap. Connect the strap to the ground connector
provided on the system cabinet.
Note:
Note: Unlike previous releases of DEFINITY, the circuit pack slots in the CMC are not
purple or white. This is because all of the circuit pack slots in the CMC are
“universal slots.” That is, any slot can contain any type of port circuit pack.
Circuit Pack Slot Loading
In general, load the circuit packs so that the number of packs in each cabinet is about equal and
the trunks and lines are evenly distributed among the cabinets. See Figure 20: Control Carrier
Slot Layout on page 60.
To install circuit packs:
1. Install the TN2402 Processor circuit pack in slot 1 of Cabinet A.
2. Install the TN2182C Tone-Clock circuit pack in slot 2 of Cabinet A.
Load all port circuit packs starting with Cabinet A first, Cabinet B next, and so forth. Return to
Cabinet A and repeat.
3. A TN744E Call Classifier/Tone Detector circuit pack may be required in systems with heavy
traffic. Install the TN744E into any port slot. Slot 1 of Cabinet B is preferred.
4. See Table 5: Circuit Pack Installation Order (Loading)
on page 61 for the recommended
circuit pack layout for the control carrier and the port carriers.