7270 DS3 PRT CR W/CPU-2 (13.5K) clei The DS3 UNI/NNI card is a three port ATM interface card. Each port operates at 45Mbps. The DS3 card is fully compliant to the mandatory requirements of the ATM Forum UNI specification (version 3.1) and the ATM Forum B-ICI Specification (Version2.0). This DS3 card provides 4.5K connections per port. This card is designed to accept the optional Multi-Service Traffic Shaping Module (MTSM,90-6744-02) or enhanced Traffic Shaping Module (eTM, 90-7695-01)which, when installed, provides enhanced traffic management features. This card must be used in conjunction with an I/O module (90-4463-xx). This card is shipped with R6.0 software.