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Class of Restriction
(COR)
Class of Service (COS)
cm
CM
CMDR
CMS
CO
common-control
switching arrangement
(CCSA)
communications system
confirmation tone
connectivity
console
contiguous
control cabinet
A feature that allows up to 64 classes of call-origination and call-termination
restrictions for voice terminals, voice-terminal groups, data modules, and trunk
groups. See also
Class of Service (COS)
A feature that uses a number to specify if voice-terminal users can activate the
Automatic Callback, Call Forwarding All Calls, Data Privacy, or Priority Calling
features. See also
Class of Restriction (COR)
Centimeter
Connection Manager
Centralized Message Detail Recording
Call Management System
See
central office (CO)
A private telecommunications network using dedicated trunks and a shared
switching center for interconnecting company locations.
The software-controlled processor complex that interprets dialing pulses, tones, and
keyboard characters and makes the proper connections both within the system and
external to the system. The communications system itself consists of a digital
computer, software, storage device, and carriers with special hardware to perform
the connections. A communications system provides voice and data
communications services, including access to public and private networks, for
telephones and data terminals on a customer's premises. See also
page 427.
A tone confirming that feature activation, deactivation, or cancellation has been
accepted.
The connection of disparate devices within a single system.
See
attendant console
Adjacent DS0s within one T1 or E1 facility or adjacent TDM or fiber time slots. The
first and last TDM bus, DS0, or fiber time slots are not considered contiguous (no
wraparound). For an E1 facility with a D-channel, DS0s 15 and 17 are considered
contiguous.
See
control carrier
on page 398.
on page 397.
on page 396.
on page 390.
on page 397.
switch
Issue 1.0 May 2003
control cabinet
on
397
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