Glossary
GL-6 July 2008 Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06
ONT Product Information Manual Edition 01 3FE 51892 AAAA TCZZA
DHCP Dynamic Host Configuration Protocol
DHCP is a client/server service that is an extension of the BOOTP protocol.
DHCP simplifies the configuration of a client workstation since no IP
addresses, subnet masks, default gateways, domain names, or DNSs must be
programmed. With DHCP, this information is dynamically leased from the
DHCP server for a predefined amount of time. Because the information is
stored on a server, it centralizes IP address management, reduces the number
of IP addresses to be used, and simplifies maintenance. RFC 2131 defines
DHCP.
DLP Detailed Level Procedure
DPE Drum Plate Enlarger
DS1 Digital Service Level-1
A digital circuit with a total bandwidth or transmission speed of 1.5444
million bits per second. The trunk level-1 standard of 1.5444 is in support of
24-voice conversations each encoded at 64 Kb per second.
DSCP Differentiated Services Code Point
A six-bit value encoded in the type of service field of an IP packet header. It
identifies the CoS that the packet should receive.
DSL Digital Subscriber Line
A DSL is a single twisted-pair that supports full-duplex transmission at a bit
rate of 160 kb/s (144 kb/s for 2B+D data, 12 kb/s for framing and error
correction, and 4 kb/s for the embedded operations channel).
DSP Digital Signaling Processing
DSS Digital Satellite Service
DTE Data Terminal Equipment
A definition of hardware specifications provided for data communications.
EAP Extensible Authentication Protocol
EC Echo Cancellation
A technique to stop a received signal from being transmitted back to its
origin by constructing a signal closely approximating the echo component
and subtracting this from the locally transmitted signal
ECT Enhanced Craft Terminal
EDFA Erdium-Doped Fiber Amplifier
A form of fiber optical amplification in which the transmittal light signal
passes through a section of erbium-doped fiber and is amplified by means of
a laser pump diode. EDFA is used in transmitter booster amplifiers, in-line
repeating amplifiers, and receiver preamplifiers.
EE Equipment Engineering
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