NEC NEAX 2400 PBX Refurbished/Used System Components Pulled From Working Environments & Tested
The NEC 2400 System Cards are divided into two categories, the Control Circuit Cards and the Line/Trunk Circuit Cards. You can identify the card category by the pull tab label color of the circuit card. White or red labels are categorized as control circuit cards. Also, the circuit cards in the Central Processor Rack (CPR) have white or red labels. Blue or yellow labels are categorized as line/trunk circuit cards.