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ADM
Last modified: Wednesday, September 05, 2001 

Short for add/drop multiplexing, a multiplexing function used in SONET optical technology but can also be used in electric signal transmissions. ADM allows new signals to come in and existing signals to be dropped from a carrier channel by passing through an add/drop multiplexer. The goal of ADM is to add and drop signals without disrupting the onward transmission of other signals.
Related Categories

Multiplexing
Related Terms

CDMA

demultiplex

EDFA

FDM

modulate

multiplex

multiplexer

pulse code modulation

SONET

T-1 carrier

T-3 carrier

TDMA

WCDMA

WDM
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