Total Access 1500 platform is ADTRAN's narrowband, multiservice access platform with the versatility for numerous applications. It can be used as a D4 Channel Bank, a small DLC, a special services delivery system, or as a High-Capacity IAD. Total Access 1500 is up to four times as dense as a traditional DLC in remote terminal applications, greatly reducing the amount of space needed to deploy POTS and special services.This Total Access 1500 Pre-configured System includes: one Total Access 1500 23" Chassis (118001L1); one Total Access 1500 4+P LIU (1180109L1); one Total Access 1500 SCU RT with MLT (118008L3); two Total Access 1500 power supply units (PSU) with ring generator (118007L1); six Total Access 1500 Quad FXS POTS Module (1180408L1).