66List of terms
ISDN
Integrated Services Digital Network
line
A communication channel or circuit; an electrical path.
loop
A bidirectional path between network equipment and peripheral equipment.
module power supplies
Individual power units that generate the different DC voltages required by the cards installed in each module.
Network Equipment
A hardware subsystem that provides digital multiplexed switching for voice, data, and signaling paths.
office data
Office data represents system configuration data, peripheral equipment data, and transient data (temporary) used for call processing.
PCM
Pulse Code Modulation.
pedestal
The bottom element in a column. Each pedestal houses a blower unit, an air filter, the PDU (which contains the column circuit breakers), and the system monitor.
power distribution unit (PDU)
Input power for CS 1000M Large Systemand Meridian 1 Large Systemare brought into the pedestal to the PDU. The PDU distributes input power to the column.
Pulse Code Modulation (PCM)
A modulation technique where the signal is converted from an analog to a digital format by sampling the signal at periodic intervals and digitizing the amplitude into a finite number of discrete levels
random-access memory (RAM)
A storage system or computer memory accessible by the user for either storing or retrieving information. RAM is volatile memory.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Large System Overview
30 September 2008
