Glossary
Basic mode | A mode of operation in which the single power module in the CO Power Unit |
| supplies power to the entire carrier. |
carrier | The rack mounting that contains 17 slots: 1 control slot and 16 DSU or modem |
| slots. |
data communication | A device, such as a DSU, that provides an interface between a DTE device and a |
equipment (DCE) | digital or analog network. (Also called data |
data service unit | A DCE device that interprets, interfaces, and provides timing and signal control |
(DSU) | between a DTE device and a digital network. |
data terminal equipment | A computer or peripheral device, such as a terminal or printer; a data source or sink. |
(DTE) |
|
Independent mode | A mode of operation in which each power module in the CO Power Unit supplies |
| power to |
LED | |
| response to the presence of a certain condition (e.g., Fan Alarm). |
Modular 3611 DSU | A circuit card that contains ``gold finger'' contacts on its rear edge. A modular |
| DSU can be removed from the front of the carrier without disturbing the DTE |
| cables at the rear of the carrier. |
rear connector plate | Used with a modular DSU, such as the Modular 3611 DSU. The rear connector |
| plate is a panel that is attached to the rear of the 3000 Series Carrier. It contains two |
| DTE connectors and functions as an interface between the Modular 3611 DSU and |
| the DTE. |
Redundant mode | A mode of operation in which both power modules in the CO Power Unit supply |
| power to all the slots in the carrier. |
shared diagnostic | A feature that allows |
control panel | diagnostic control panel. Installed at |
(SDCP) | Carrier, it controls and monitors the DSUs and modems in all the carriers in the |
| cabinet. A single SDCP can control up to 8 carriers, with a total of 128 DSUs (and |
| if present, 128 DBMs) and modems. |
May 1998 |
