
COMSPHERE 392xPlus Modems
dBm | A decibel referenced to one milliwatt. This unit measures relative signal power. |
DCE | The equipment (Data Communications Equipment or Data Circuit Terminating |
| Equipment) that provides the functions required to establish, maintain, and end a |
| connection. This equipment also provides the signal conversion required for |
| communication between the DTE and the telephone line. |
DCP | Diagnostic Control Panel. The face of the modem that continuously provides status |
| information about the modem's operation and allows an operator to manage its operation. |
| This is a generic term used for both the standalone and |
| SDCP. |
demodulation | The process of recovering data from a modulated carrier wave. |
DevHS | Device Health and Status. A detailed account of device alarms. |
Diagnostic Channel (DC) | The diagnostic interface between two network devices, used to extend the NMS |
| diagnostics to downstream devices. |
dial command modifiers | A modifier used in the dial string that instructs the modem how to process a dialed |
| telephone number. |
dial line | A communications circuit that is established by a switched circuit connection in the dial |
| network. |
dial network | See PSTN. |
Dial Standby | A function available when the modem is operating in Dial Backup mode, allowing the |
| modem to switch back to |
| connection. |
dial string | A series of characters that consists of numbers and modifiers used to dial a telephone |
| number. |
digital bridging | Provides the capability of dial backup in a multipoint configuration by bridging the |
| signal on the digital side of the front end panel. |
directory location | Nonvolatile memory that stores up to ten telephone numbers. Each directory location can |
| have up to 40 characters entered. |
DOC | Canadian Department of Communication. |
download | A process that transfers modem firmware from a locally attached PC to a modem or |
| allows the cloning of firmware from a local modem to a remote modem. |
downstream modem | A device connected ªfartherº from the host computer. |
DTE | The equipment (Data Terminal Equipment), such as a computer or terminal, that |
| provides data in the form of digital signals. |
edit area | A temporary work area used to view and change configuration options from the DCP. |
| The edit area can be loaded from one of five configuration option areas, Active |
| (Operating), Active (Saved), Customer 1, Customer 2, or Factory. |
November 1996 |