Digital Signal Level 3 (DS-3) means the 44.736 Mbps third level signal in the time division multiplex hierarchy.
Digital Signal Level 1 (DS-1) means the 1.544 Mbps first level signal in the time division multiplex hierarchy.
Digital Signal Level 0 (DS-0) means the lowest-level signal in the time division multiplex digital hierarchy, and represents a voice-grade channel operating at either the 56 Kbps or 64 Kbps transmission bit rates. There are twenty-four (24) DS-0 channels in a DS-1.
Student Growth means the change in Student Achievement data for an individual student between two points in time. Growth may also include other measures that are rigorous and comparable across classrooms.
Digital Signal Level means one of several transmission rates in the time division multiplex hierarchy.