46System architecture
Any medium that conforms to the DS-1 format (1.544 Mbps) can be used to link local and remote sites, including digital microwave radio and fiber-optic transmission systems.
Terminal equipment
Large Systems support a wide range of telephones, including multiple-line and single-line telephones, as well as digital telephones with key and display functions and data transmission capabilities. A range of options for attendant call processing and message center applications is also available. In addition, a number of add-on devices are available to extend and enhance the features of telephones and consoles. Add-on devices include key/lamp modules, lamp field arrays, handsets, and handsfree units.
For more information refer to Telephones and Consoles Fundamentals (NN43001-567), and IP Phones Fundamentals (NN43001-368, ).
Digital telephones
Analog-to-digital conversion takes place in the digital telephone itself, rather than in the associated Peripheral Line card. This eliminates attenuation, distortion, and noise generated over telephone lines. Signaling and control functions are also handled digitally. Time Compression Multiplexing (TCM) is used to integrate the voice, data, and signaling information over a single pair of telephone wires.
For applications where data communication is required, Meridian 1 digital telephones offer an integrated data option that provides simultaneous voice and data communication over single pair wiring to a port on a digital line card.
CS 1000Mand Meridian 1Large Systems supports telephones as described in:
•IP Phones Fundamentals (NN43001-368),
•Telephones and Consoles Fundamentals (NN43001-567),
•WLAN Handsets Fundamentals (NN43001-505),
•DECT Fundamentals (NN43120-114),
Attendant consoles
Meridian 1 attendant consoles provide high-volume call processing. Indicators and a 4 x 40 liquid crystal display (LCD) provide information required for processing calls and personalizing call answering. Loop keys and Incoming Call Indicator (ICI) keys allow the attendant to handle calls in sequence or to prioritize answering for specific trunk groups. An optional busy lamp field provides the attendant with user status.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Large System Overview
NN43021-110 02.05 Standard
30 September 2008
