Nortel RLC Installation And Administration Manual page 419

June 2005
D
daughterboard
Usually used as a synonym for an expansion board, a daughterboard is any
printed circuit board that connects directly or indirectly to a motherboard.
DB9 connector
A 9-pin connector labeled ADMIN that provides the RS-232 serial port
interface. This serial port connection can be used to configure a Remote
Gateway 9150 unit that is directly connected to a PC.
DC
Refer to Direct Current.
DHCP
Refer to Dynamic Host Configuration Protocol.
Digital Linear Tape
A high-capacity 1/2-inch streaming tape cartridge format.
Digital Signal Processor
A special type of coprocessor that manipulates analog data, such as sound or
photographs, that has been converted to digital form.
DIMM
Refer to Dual In-line Memory Module.
DIP
A type of protective packaging for silicon memory chips that provides a safe and
convenient means of installing and removing the chip.
DIP switch
A series of tiny switches built into circuit boards that enables you to configure a
circuit board for a particular type of computer or application. DIP switches are
always toggle switches. This means that they have two possible positions: on or
off (or 1 or 0).
RLC Installation and Administration Guide
Glossary
393