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Glossary:
326
Installation and Upgrades for G700 with S8300 or S8700
555-234-100 — Issue 3 — May 2003
CSS
See
center-stage switch (CSS).
CSSO
Customer Services Support Organization
CSU/DSU
See channel service unit/data service unit (CSU/DSU)
.
CTI
See computer telephony integration (CTI)
.
CTI station
An station that is Administered Without Hardware (AWOH) that an application can use to originate calls and receive
calls. CTI stations support ASAI call control features such as hold, answer, drop, conference, and so on. Calls on a CTI
station operate the same way as calls on a real telephone. CTI stations can also be used to originate phantom calls. See
also Administration Without Hardware (AWOH).
CTS
Clear to send
customer-premises equipment (CPE)
Equipment that is connected to the telephone network, and that resides on a customer site. CPE can include telephones,
modems, fax machines, video conferencing devices, switches, and so on.
CWC
See call work code (CWC)
.
cyclic redundancy check (CRC)
A method to check the integrity of a transmitted block of data. The transmitting device generates a CRC character, the
value of which depends on the number of ones in the data block to be transmitted. The receiving device calculates the
value of the data received, including the added character. If the values of the transmitted data and the values of the
received data do not agree, the receiving device requests the transmitting device to send the data again.
D
DAC
(1) Dial access code; (2) Direct Agent Calling; (3) digital-to-analog converter. See
digital-to-analog converter (DAC).
data channel
A communications path between two points that is used to transmit digital signals.
data communications equipment (DCE)
Equipment on the network side of a communications link that makes the binary serial data from the source or the
transmitter compatible with the communications channel. DCE is usually a modem, a data module, or a packet
assembler/disassembler.
data link
The configuration of physical facilities that end terminals use to communicate directly with each other.
data link connection identifier (DLCI)
An identifier that is assigned to each data link in the Link Access Procedure-D (LAP) protocol. DLCI is used to route data
to a certain destination.
data module
An interconnection device between a Basic Rate Interface (BRI) or a Digital Communications Protocol (DCP) interface
of the switch, and data terminal equipment (DTE) or data communications equipment (DCE).