User guide

Glossary
GL-4
Cisco Media Gateway Manager 5.0 User Guide
OL-5461-02
E
DCE
data circuit-terminating equipment
DCN
data communications network
DCS
Digital Cross-connect System
DCU
dispersion compensation unit
DDS
digital data service
DHCP
Dynamic Host Configuration Protocol
DLC
digital loop carrier
DOS
disk operating system
DRI
dual-ring interconnect
DS1
digital service 1
DS-1
digital signal level 1
DS3-12
Digital Signal Level Three (12 ports) card
DS3N-12
Digital Signal Level Three (N-12 ports) card
DSL
digital subscriber line
DSU
data service unit
DTE
data terminal equipment
DUS
do not send
ECR
bit error corrected rate
EDFA
erbium-doped fiber amplifier
EFD
event forwarding discriminator
ELH
Extended Long Haul
EML
Element Management Layer
EMS
element management system
ENE
end network element
EOC
embedded operations channel
EOI-W
External Orderwire Interface module