CARRIER DML2DE0CAA Quad TI Card Module

DML2DE0CAA Quad TI Card Module is a four-channel T1 interface card originally built for Carrier Access WideBank telecom backplanes. The card is documented as a Quad T1/TI card with the PWB revision 003-0172-0301 (157-2), and reseller listings refer to it as a Carrier Access quad TI/T1 card designated DML2DE0CAA. Public equipment lists tie the same part number to WideBank 28 backplanes, where it appears as a Quad DS-1 card with p/n 740-0172, underscoring its role in DS-1/T1 telecom interfaces in legacy networks. The module is commonly described in the market as discontinued by the manufacturer, reflecting its status in older Carrier Access deployments. In practice, this card would be installed into a compatible Carrier Access chassis to provide multiple T1 DS-1 interfaces for voice, data, or legacy WAN connections, making it suitable for upgrading or maintaining aging networks that rely on four T1 lines. Because it carries a specific board revision (003-0172-0301) and is tied to the WideBank family, compatibility depends on matching the backplane and interconnects used in Carrier Access systems.