The OC3-2 MMF Card with CPU-2 is a local ATM (LATM) OC3 interface card operating at the SONET OC3 rate of 155 Mbps, with 32k cell buffering per card. The multi-mode fiber (MMF)optional interface has a typical range of 2km. The OC3-2 MMF Card is a single port card and is compliant to the requirements of the ATM Forum UNI Specification (Version 3.1) and the ATM Forum B-ICI Specification (Version 2.0). Requires a minimum of Release 3.1 for operational support. This card is designed to accept the optional Multi-Service Traffic Module (MSTM 90-4724-01) or enhanced Traffic Shaping Module (eTM, 90-7695-01) which, when installed, provides enchanced traffic management features.