| GENERAL CHARACTERISTICS ITEM DESCRIPTION | ASSEMBLY CONTAINS A MAINTENANCE UNIT AND 1 OR 2 MULTIPLEXER/DEMULTIPLEXER UNITS;THE UNIT PROVIDES THE VOICE FREQUENCY AND DATA CHANNELS WHILE THE MULTIPLEXER/DEMULTIPLEXER UNITS INTERFACE THE VF AND DATA CHANNELS WITH THE TRANSMISSION LINE; THE ASSY C/O A SHELF,A MOTHERBOARD,AND PLUG-IN UNITS |