Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Glossary
Page GL-10
CO (central office) Location of telephone switching
equipment that provides local telephone service and
access to toll facilities for long-distance calling.
coaxial cable Cable consisting of one conductor, usually a small
copper tube or wire within and insulated from
another conductor of larger diameter, usually copper
tubing or copper braid.
codec (coder-decoder) Device used to convert analog
signals, such as speech, music, or television, to
digital form for transmission over a digital medium
and back to the original analog form.
common channel
signaling
See CCS.
communications
system
Software-controlled processor complex that inter-
prets dialing pulses, tones, and/or keyboard
characters and makes the proper interconnections
both inside and outside. Consists of a computer,
software, a storage device, and carriers with special
hardware to perform the actual connections.
Provides voice and/or data communications
services, including access to public and private
networks, for telephones and other equipment. Also
referred to in this guide as “system,” short for
MERLIN LEGEND Communications System.
control unit Processor module, power supply modules,
line/trunk and extension modules, carriers, and
housing of the system.
console Refers to telephone and adjuncts (if any) at an
operator or system programmer extension.
CONVERSANT Voice response application that automatically
answers and routes calls and executes telephone
transactions.