Paradyne 3000 manual Csa

COMSPHERE 3000 Series Carrier

Control Channel (CC)	The diagnostic interface between an NMS and the SDU.
CSA	Canadian Standards Association.
CSU	Channel Service Unit. Protects the T1 line from damage and regenerates the T1
	signal.
Data Communication	A device, such as a DSU or modem, that provides an interface between a DTE
Equipment	device and a digital or analog network. (Also called data circuit-terminating
(DCE)	equipment.)
DATAPHONEr II	The name of both a family of AT&T NMS products (System Controller, Diagnostic
	Console, and Network Controller) and the network management protocol used by
	these products.
Data Service Unit	A DCE device that interprets, interfaces, and provides timing and signal control
(DSU)	between a DTE device and a digital network.
Data Terminal Equipment	A computer or peripheral device, such as a terminal or printer; a data source or sink.
(DTE)
DBM	The dial backup module option for the Model 3611, 3551, and 3616 DSUs. This
	module is a pair of childboards that attach to the DSU circuit card to provide an
	alternate data path via a point-to-point telephone call.
DBM-D	A dial backup module (DBM) that provides automatic dial backup and service
	restoration of failed digital circuit using 2-wire access over 2-wire 56 kbps switched
	digital services. It is used for multipoint dial backup, where it occupies one slot in
	the carrier and is connected to a digital bridge, to provide an alternate data path via
	a point-to-point dial call to a remote DBM when the digital circuit fails. The
	DBM-D optional Model 3611 DSU feature is composed of two childboards
	(DBM-D primary core and line interface).
DBM-S	A dial backup module (DBM) that provides automatic dial backup and service
	restoration of failed digital circuits using 4-wire access over 4-wire 56 kbps
	switched digital services. It is used for multipoint dial backup, where it occupies
	one slot in the carrier and is connected to a digital bridge, to provide an alternate
	data path via a point-to-point dial call to a remote DBM when the digital circuit
	fails. The DBM-S optional Model 3611 DSU feature is composed of two
	childboards (DBM-S primary core and line interface).
DBM-V	A V.32 dial backup module (DBM) that provides automatic dial backup and service
	restoration of failed digital circuits over the public switched telephone network
	(PSTN). It is used for multipoint dial backup, where it occupies one slot in the
	carrier and is connected to a digital bridge, to provide an alternate data path via a
	point-to-point dial call to a remote DBM when the digital circuit fails. The DBM-V
	optional Model 3611 DSU feature is composed of two childboards (DBM-V
	primary core and line interface).
DDS	Digital Data Service, such as DATAPHONE Digital Service or ACCUNET
	Spectrum of Digital Services, that provides digital (not analog) communication
	circuits.
Diagnostic Channel	A digital interface between a DSU and a modem used to extend diagnostics to the
	DSU via the modem.

Glossary-2 December 1994 3000-A2-GA31-80