The ADTRAN Total Access 1500 is a Carrier Class, multiservice access platform for deploying narrowband services from TDM network access. A compact, extremely versatile platform, Total Access 1500 integrates the functionality of many carrier products into a single high-density chassis. Total Access 1500's small footprint (2U-high mounting) makes it the perfect choice for integrated communications providers such as ILECs, CLECs, and ISPs who need to deploy services from crowded Remote Terminals (RTs), Central Offices (COs), or Co-Location (COLO) facilities.Total Access 1500 provides a variety of services including POTS, special services (ISDN, DDS, FXO, FXS, E&M, DPO, DPT, and PLAR), and data services. Total Access 1500 is a modular device with five common slots and 24 access slots. Common units required for operation are a Power Supply Unit (PSU), Line Interface Unit (LIU), and System Controller Unit (SCU). A second, redundant PSU and LIU may be deployed for added reliability. The PSU is available with an integrated Ring Generator providing up to 40 REN ringing capacity. The LIU can support up to four T1 interfaces and has full Time Slot Assignment (TSA) capability. This feature allows users to "steer" varied amounts of bandwidth from the network to any of the access slots, ensuring that no bandwidth is stranded. The 24 access slots accept a variety of voice and data access modules, allowing users to optimize their service for each application. Using local or remote in-band management, service providers can provision and monitor the bank's network interface and access modules. Transaction Language 1 (TL1) protocol is used to communicate with Telcordia's NMA Operations Support System (OSS) using an internal X.25 PAD. An Ethernet 10BaseT connector is used for connection to SNMP networks and Telnet. ADTRAN's ADVISION software provides a graphical user interface (GUI). Total Access 1500 is designed for 23" relay racks. Full compliance with NEBS Level 3 and UL 1950 ensures maximum reliability and safety.The bundle includes ADTRAN Total Access 1500 23" Chassis with two Power Supply Units with Ring Generator, Quad POTS RT and System Control Unit (RT SCU with MLT).