3.3 NX-1232 SYSTEMThe basic KSU (Key Service Unit) comes equipped to operate eight telephonelines and sixteen stations. Stations #1 through #8 are assigned to be used withkeysets or single line telephones, and stations #9 through #16 are assigned forsingle line telephones. The NX-1232 system accepts several kinds of expansioncards. The NX-2TRK, NX-4TRK, NX-4KLI, NX-4SLI, NX-4OPX, NX-8KLI, NX-8SLI cards can be installed in any of the three expansion slots. By combiningthese cards, the NX-1232 system can be increased to its maximum capacity offorty eight ports.Optionally, the NX-SMDR/R-MMC, NX-DPH/PAGING, NX-MPD and NX-PRSboard can be installed on the base board. The NX-SMDR/R-MMC board is theSMDR and REMOTE MMC serial interface, the NX-DPH/PAGING board is thedoor phone and external paging interface and the NX-MPD, NX-PRS board areinterface for calculating call cost.But, maximum keyphone part is restricted to twenty four(24) ports although threeNX-8KLI cards are used.Basic KSUBasic KSU, one 8 SLI (or 8 KLI) Board and one 4 TRK CardBasic KSU, one 8 SLI (or 8 KLI) Board and two 4 TRK CardsBasic KSU and three 4 TRK CardsBasic KSU, two 8 SLI (or 8 KLI) Board and one 4 TRK CardBasic KSU and three 8 SLI (or 8 KLI) CardsNX-SERIES HYBRID KEY SYSTEM GENERAL DESCRIPTION SECTION8 16 24 32 402016128No. of Stations1 - 5