Cisco ASR 900 48-Port T1/E1 Interface Module | Router Expansion — A900-IMA48D-C

Consolidate legacy circuit access on Cisco ASR 900 platforms with a 48-port T1/E1 interface module designed for dense termination. This module is built for environments that still depend on T1 and E1 services and need a structured way to bring those circuits into a modern routing platform. The requirement for a patch panel reflects the realities of high-density circuit management: cleaner cabling, more controlled terminations, and easier service organization at scale. For network teams supporting branch aggregation, carrier access, or migration environments, that matters. It reduces the friction of handling many low-speed circuits while keeping the platform aligned to operational standards. Compared with smaller or ad hoc alternatives, this module is about concentration and control. It gives procurement and engineering teams a purpose-built way to support legacy services on an ASR 900 chassis without fragmenting the deployment across multiple smaller modules or external workarounds. Ideal For Legacy T1/E1 aggregation in carrier access nodes Branch circuit concentration on Cisco ASR 900 routers Migration support for mixed legacy and IP transport environments High-density circuit termination with patch panel-based cabling Why This Product 1 48 T1/E1 ports for dense circuit termination 2 Requires patch panel for structured cabling 3 Built for Cisco ASR 900 platforms 4 Ideal for legacy access and aggregation