digital access and cross-connect system

Digital access and cross-connect system (DACS): In communications systems, a digital system in which (a) access is performed by T-1 hardware architecture in private and public networks with centralized switching and (b) cross-connection is performed by D3/D4 framing for switching digital-signal-0 (DS-0) channels to other DS-0 channels. Note: Modern digital access and cross-connect systems are not limited to the T-carrier system, and may accommodate high data rates such as those of SONET. In the EIA/TIA 568-A standard, a horizontal cross-connect is used to describe the distribution station when such a station is separate from the main backbone, and accessed via horizontal cabling. Source: from Federal Standard 1037C, Cisco Technical Glossary.

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data circuit terminating equipment
decollimation
decrypt
degradation
degree of isochronous distortion
degree of start stop distortion
dejitterizer
delay
delay encoding
delay line
delta modulation

demand assignment
demand factor
demand load
desensitation
design objective
detector
deterministic routing
d 4
pulse dialing
dial up
dielectric

dielectric strength
differential encoding
differential manchester encoding
diffraction grating
digital filter
digital milliwatt
digital multiplex hierarchy
digital signal 0
digital subscriber line
digital transmission group
digitizer

digroup
direct access
direct connect
direct distance dialing
directional coupler
directive gain
direct sequence spread spectrum
disengagement originator
dispersion limited operation
distortion
distortion limited operation