Nortel Networks warranty Engineering rules, CS 1000M Large System

Preparing for installation Page 53 of 456

Figure 11

CS 1000M Large System

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Signaling

Server

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Engineering rules

Each system is defined using the following assumptions and general engineering rules.

1A system may be upgraded to the next larger system type as defined in Communication Server 1000M and Meridian 1 Large System Upgrade NTPs (NN43021-458 – NN43021-475).

2When expanding to the next system type, the changes to the physical configuration should be kept as simple as possible to reduce downtime and installation costs.

3A module column should be built up to the maximum of four modules before moving to the next new column. In installations where the ceiling does not allow four-high columns, the alternate configuration of three-high tiers can be used.

4Vertical routing of the internal signal cables should be done only on the right side of a module.

5The CPU modules must be on the bottom of a column or one level up for proper cooling and reliability.

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning