Nortel 1000M Overview

Also see for Succession 1000M: Implementation guide Installation and configuration Installation and commissioning Description, installation, and maintenance Installation and configuration

Hardware architecture 47Meridian attendant consoles support attendant message center options.The attendant console can be connected to a PC to provide electronicdirectory, dial-by-name, and text messaging functions. All call processingfeatures can be accessed using the computer keyboard.Power equipmentLarge Systems provide a modular power distribution architecture.Each column includes:• a system monitor that provides:— power, cooling, and general system monitoring capabilities— error and status reporting down to the specific column and module• circuit breaker protection• a cooling system with forced air impellers that automatically adjustsvelocity to meet the cooling requirements of the system• backup capabilitiesEach module includes:• an individual power supply unit with shut-off (switch or breaker)protection• a universal quick-connect power wiring harness that distributes inputvoltages and monitor signals to the power supplyAll options are available in both AC-power and DC-power versions.The selection of an AC- or DC-powered system is determined primarilyby reserve power requirements and existing power equipment at theinstallation site.Although AC-powered and DC-powered systems have different internalpower components, the internal architecture is virtually identical. AC- andDC-powered systems differ primarily in the external power components.AC powerAC-powered systems require no external power components and canplug directly into commercial AC (utility) power. AC-powered systems areespecially suitable for applications that do not require reserve power. Theyare also recommended systems that require reserve power with backuptimes ranging from 15 minutes to 8 hours.If reserve power is required with an AC-powered system, anUninterruptible Power Supply (UPS), along with its associated batteries(either internal or external to the unit), is installed in series with the ACpower source (see Figure 17 "ExternalAC-power architecture with reserveNortel Communication Server 1000Communication Server 1000M and Meridian 1 Large System OverviewNN43021-110 02.05 Standard30 September 2008Copyright © 2003-2008 Nortel Networks.