Alcatel-Lucent OmniPCX Office Installation Manual page 133

It is possible to add one or two modules to the basic module.
4.11.1.4.1 Fitting an add on module.
- The CPU slot of the add on module must be fitted with an MEX board with an HSL1
daughter board.
- Fit the CPU board of the main module with an HSL daughter board.
- An add-on module may only include synchronous digital network interfaces (BRA, PRA) if
this type of card is already incorporated into the main module (synchronization by the main
module).
- The same rules apply to the other boards as those which applied to the base module.
4.11.1.4.2 MEX board.
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