The Adtran Atlas 550 Dual T1/PRI Module Provides two interfaces that are independently configurable for DS1, DSX-1 or PRI operation.

The ATLAS 550 FXS option modules provides eight 2-wire interfaces that can operate in the PLAR, Tandem (MEGACOM), or FXS mode and supports PBX circuits, analog phones and modems. The module provides talk battery, off-hook supervision and balanced ringing for short loop or premises applications

ADTRAN supplies innovative network access products that enable today's widespread digital telecommunications applications, including Internet access, telecommuting, corporate connectivity, distance learning, video-conferencing, and teleradiology. Used extensively in the networks of incumbent local exchange carriers, competitive local exchange carriers, interexchange carriers, Internet service providers, and private and public enterprises worldwide, ADTRAN products consistently reduce operating costs and improve network performance.

The Adtran Atlas 550 Quad T1/PRI Module provides four interfaces that are independently configurable for DS1, DSX-1, or PRI operation.

This Adtran NetVanta DIM Carrier Module supports a Dial Backup Interface Module (DIM) without the use of a NIM.

The Adtran NetVanta Octal T1/E1 Wide Module supports NxT1 connections with MLPPP; Supports 8 separate T1 connections of Frame Relay r PPP; Supports the NetVanta 4305 and the NetVanta 5305.

The DES-132T is a two port Gigabit Ethernet module designed for the DES-3226, DES-3226SM, DES-3326SRM switches. It provides 2 tri-speed Gigabit copper connections to the switches, increasing its port count to 26 ports and providing an increased throughput and connectivity at Gigabit speeds. Designed to alleviate any bottlenecks that might occur in the network, the DES-132T is targeted to be used as uplink ports to servers, or a backbone at a small, medium or large businesses.