Lucent Technologies 6.1 manual Eia, Esf, Ess

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998
Glossary
	Page GL-12

E

E&M signaling	Trunk supervisory signaling, used between two
	communications systems, in which signaling information is
	transferred through two-state voltage conditions (on the Ear
	and Mouth leads) for analog applications and through two
	bits for digital applications. See also tie trunk.
EIA	(Electronic Industries Association)
EIA-232-D	Physical interface, specified by the EIA, that transmits and
	receives asynchronous data at speeds of up to 19.2-kbps
	over cable distances of 50 feet (15 m).
Electronic	See ESS.
Switching System
endpoint	Final destination in the path of an electrical or
	telecommunications signal.
Enhanced Service	An application that sends calls to available agents in a
Center	calling group. The Enhanced Service Center places calls in
	queue, plays announcements, tracks agent activity and
	availability, and provides real-time reports.
ESF	(extended superframe format) PRI framing format
	consisting of individual frames of 24 eight-bit slots and one
	signal bit (193 bits) in a 24-frame extended superframe.
ESS	(Electronic Switching System) Class of central office (CO)
	switching systems developed by Lucent Technologies in
	which the control functions are performed principally by
	electronic data processors operating under the direction of
	a stored program.
expansion carrier	Carrier added to the control unit when the basic carrier
	cannot house all of the required modules. Houses a power
	supply module and up to six additional modules.
ExpressRoute	Data communications device that allows connection
1000	between an RS-232 DTE device and the control unit using
	MLX extension jacks on the 008 MLX or 408 GS/LS-MLX
	module.
extended	See ESF.
superframe format
extension	An endpoint on the internal side of the communications
	system. An extension can be a telephone with or without an
	adjunct. Also called “station.” See also data workstation.
extension jack	An analog, digital, or tip/ring physical interface on a module
	in the control unit for connecting a telephone or other
	device to the system. Also called “station jack.”