ASR 900 12 port T1/E1 + 4 port DS3/E3 + 4 port OC3/STM-1 or 4 port OC12/STM-4 or 1 port OC48/STM16 CEM/iMSG Interface Module, Spare

📇 Catalogued from Cisco's product line. Lifecycle/EOL and successor are listed below where available; detailed specs are being added continuously.