3com Router 4-Port T1 IMA FIC- MSR 1.544Mbit/s networking card

Router 4-Port T1 IMA FIC- MSR Maximize Performance with Optional Interface Modules
These Flexible Interface Cards (FICs) provide a variety of expansion options that let you enhance router performance to optimize network operation. Customize your network to your business needs.

-Provides 4 ports supporting T1 with inverse multiplexing over ATM (IMA).
-Facilitates scalable and secure network operation.
-Maximizes interface density and slot efficiency.