Cisco ASR 900 A900-IMA48T-C= 48-Port DS3/E3 Module

Keep legacy WAN services under control with a dense interface module built for Cisco ASR 900 routing platforms. The 48-port DS3/E3 design is aimed at networks that still terminate carrier circuits, regional transport links, or enterprise WAN services on TDM infrastructure. Instead of scattering low-density adapters across the rack, this module concentrates connectivity in a single chassis slot. The patch-pane requirement is part of the deployment model, not a limitation. It supports cleaner cable management and a more disciplined handoff between the router and external circuit termination. For operations teams, that means easier service organization, clearer troubleshooting, and a more maintainable physical layer. This module is a practical choice when you need to extend the life of existing DS3/E3 services while keeping the routing platform standardized. It fits organizations that value circuit density, operational order, and compatibility with established WAN architectures over a wholesale migration to newer access technologies.