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Glossary

Gloss 10 06 20

# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are 11 names in this directory beginning with the letter D.
DBA - DSL Broadband Aggregator
The DSL Broadband Aggregator (DBA) provides link aggregation to remote DSLAMs in rural carrier networks, aggregating up to 24 VDSL2 (17a & 35b profiles) pairs. The DBA enhances networks where bandwidth delivery is limited by DSLAM backhaul capability (8 pair G.Bond/EFM and legacy T1)
DBE - DSL Broadband Extender
The DSL Broadband Extender (DBE) enhances the performance and functionality of VDSL2 (17a & 35b profiles) links or aggregated link bundles using true 3R (Re-amplification, Re-shaping and Re-timing) regeneration. Its multifunctional design supports the full range of Genesis solutions for residential and enterprise networks
DC - Direct Current 
An electric current flowing in one direction only
DEI - Drop Eligibility Indicator - also known as CFI 
A field in each Ethernet packet that signals that the packet is eligible to be dropped in case of network congestion (Also known as CFI)
DHCP - Dynamic Host Control Protocol 
A network protocol that initiates or enables a server to automatically allocate an IP address to a respective computer from a specific defined range of numbers (i.e., defined as scope) which is configured for a required network
DOCSIS - Data Over Cable System Interface Specification
Main technology for cable-based networks. Presided over by Cable Labs
DP - Distribution Point 
The cable access point in the UK copper telephone network that is closest to the consumer. In other country's networks this location is called a pedestal
DPBO - Downstream Power Back Off
The term in DSL networks where the signal power from the network to the consumer is reduced when not needed to deliver the requisite level of bandwidth to that consumer
DS - Down Stream
The direction of transmission from the network to the consumer
DSL - Digital Subscriber Line
DSL is a technology that transports high-bandwidth data from a DSLAM over a telephone line that is connected to a modem. The main standards are written by the ITU-T G.993.x
DSLAM - Digital Subscriber Line Access Multiplexer
A network device that is the head-end of a DSL signal. The DSLAM connects to the CPE (modem) electrically over the telephone copper twisted pairs to provide high speed Internet access - generally Ethernet-based