7470 OC12-2 IR The OC12-2 ATM IR Card is a UNI/NNI OC12 ATM interface card operating at the SONET OC12 rate of 622 Mbps, with 32k egress cell buffering per card and advanced traffic management capability. The Intermediate Reach(IR) single mode fiber optio

7470 OC12-2 IR The OC12-2 ATM IR Card is a UNI/NNI OC12 ATM interface card operating at the SONET OC12 rate of 622 Mbps, with 32k egress cell buffering per card and advanced traffic management capability. The Intermediate Reach(IR) single mode fiber optional interface has a total loss budget of 12 db. The OC12-2 employs the CPU-2 module for enhanced call performance. The OC12-2 requires a minimum of release 4.2 for operational support.