ADTRAN 1200270L1, Manual

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Appendix F. Glossary
61200270L1-20 DSU III ARdc User Manual F-3
customer premise equipment
CPE. All telecommunications terminal equipment located on the cus-
tomer premises, including telephone sets, private branch exchanges
(PBXs), data terminals, and customer-owned coin-operated tele-
phones.
clear to send
CTS (also called CS). A signal on the DTE interface indicating that
the DCE is clear to send data.
DATAMATE
An ADTRAN designed and manufactured device that provides a
hand-held means of configuring the SMART 16 shelf. The DATA-
MATE plugs into the front of the controller card and provides a 2x16
LCD display and full numeric keypad.
data service unit
DSU. A device designed to transmit and receive digital data on digi-
tal transmission facilities.
digital data service
DDS (also called Digital Data System). A private line digital service,
for transmitting data end-to-end at speeds of 2.4, 4.8, 9.6, and 56 kbps
and in some cases 19.2, 38.4, or 64 kbps. The systems can use central
hub offices for obtaining test access, bridging legs of multipoint cir-
cuits, and cross connecting equipment. DDS is offered on an inter-
LATA basis by AT&T and on an intra-LATA basis by the Bell operat-
ing companies.
data set ready
SR. A signal on the EIA-232 interface that indicates if the communi-
cation is connected and ready to start handshaking control signals so
communication can begin.
data terminal equipment
DTE. In the EIA-232C standard specification, the EIA-232C is con-
nected between the DCE and a DTE. The main difference between
the DCE and the DTE is that pins two and three are reversed.