The Cisco OC-12/STM-4-POS-SM-I is available from Calhoun Technologies. Calhoun Technologies can helped companies like yours save up to 80% on IT equipment. Our experienced and knowledgeable sales executives are ready to provide quick response to your needs for servers, storage and networking equipment. Brand: Cisco Part Number: OC-12/STM-4-POS-SM-I Details: Oc-12/Stm-4-Pos-Sm-Ir 800-02529-03 Gsr 12000 Series 1 Port