Alcatel-Lucent 1643 AMS Applications And Planning Manual page 292

Glossary
Disassembly
Splitting up of a signal into its constituents as payload data and overhead (an indication
of the direction of a signal).
Domain
The domain of a Lucent OMS is the set of all SDH network elements that are controlled
by that particular Lucent OMS.
Downstream
At or towards the destination of the considered transmission stream, i.e. in the direction
of transmission.
DPLL
Digital Phase-Locked Loop
DPS
Data communication Packet Switch
DR
Digital Radio
DRI
Dual-Ring Interworking
DS-n
Digital Signal, Level n
DSL
Digital Subscriber Line
DTMF
Dual-Tone Multi-Frequency
Dual Homing
An STM-1/STM-4 ring with AM-1 Plus equipment can be dual homed on a ring
consisting of 1643 AM products and STM-16 rings can be dual homed with the 1655
AMU.
Dual-Node Interworking
Dual Node Interworking (DNI) is a configuration of two ring networks that share two
common nodes. DNI allows a circuit with one termination in one ring and one
termination in another ring to survive a loss-of-signal failure of the shared node that is
currently carrying service for the circuit.
DUS
Do not Use for Synchronization
DWDM
Dense-Wavelength Division Multiplexing
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GL-8 Alcatel-Lucent - Proprietary
See notice on first page
365-312-801R7.2
Issue 3, May 2007