central processor module

KSU1 COMPONENTS The  CPM (Central Processor  Module) is installed inside  of KSU1  to  the 408M  ribbon  cable J4 (also labeled  “To  CPM”).   The CPM  contains: •   Two  serial  ports, •   Two music  ports, •   One  control contact  (external paging/LBC/gate control), •   One external  page  equipment interface  connection, and •   Socket connectors for the  KSU2 (labeled “2nd  Cabinet”), MDM, and  VP  modules (AAM, 7271C, and 7270C). The  standard  408M (part  of 7201) contains: •   4 CO line  ports, •   1 power failure transfer port  for the  first CO  line circuit, •   8 digital ports, •   a ribbon  cable (J1,  also labeled  “COM4”)  for connection  to  the COM4  module (PN 7210) in KSU1, and •   ribbon  cable  sockets  (J2  and  J3,  also  labeled “To DPM8/APM4”) for  connection of  DPM8  (PN 7220) or  APM4  (PN 7230) modules. The  standard APM4 (part of  7201) contains  four analog  device  ports (installed on  ribbon  cable J5, also labeled “APM4”). 1.2.2  KSU2 COMPONENTS The standard 408E  contains: •   4 CO line  ports •   1 power failure transfer port  for the  first CO  line circuit •   8 digital ports •   a ribbon  cable (J1,  also labeled  “COM4”)  for connection  to  the COM4  module (PN 7210), •   ribbon  cable  sockets  (J2  and  J3,  also  labeled “To DPM8/APM4”) for  connection of  DPM8  (PN 7220) or  APM4  (PN 7230) modules,  and •   a  shielded cable (J4)  for connection to CPM socket  JP2 (also  labeled “2nd  Cabinet”) in KSU1.