Nortel Networks COMMUNICATION SERVER 1000 NN43021-110 - Manual (Page 46)

46 System 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
Copyright © 2003-2008 Nortel Networks
.