Ericsson LBI-39076B system manual Glossary

	GLOSSARY	LBI-39076B
	GLOSSARY
2-Wire Audio Line	A 2-Wire audio line uses a single audio pair for passing audio signals in
	both directions.
4-Wire Audio Line	A 4-Wire audio line uses separate audio pairs for passing audio signals
	in both directions; one audio pair for each direction.
CDR	Call Detail Record [ELI]
Channel-Connected GTI	The Channel-connected GTI is the specific GTI unit connected to the
	EDACS repeater channel involved in the interconnect call being
	described.
DID	Direct Inward Dialing - A feature which allows callers to dial from the
	public network straight to a wanted extension on a PABX without
	intervention by an operator.
DIP Switches	Dual In-Line Package Switches - DIP switches are commonly packaged
	in banks of eight, but can be more or less.
DSP	Digital Signal Processor
DTMF	Dual-Tone Multi-Frequency - DTMF is a signaling method using set
	combinations of two specific voice-band frequencies to represent
	characters on a keypad (typically includes the numbers 0 through 9).
	One frequency represents the row number on keypad; the second
	frequency represents the column number.
E-Lead	The E-Lead is a separate signaling wire associated with some 2-Wire or
	4-Wire audio lines, and is used to signal an incoming call from the
	public telephone network. Signaling is usually detected by the presence
	or absence of ground or -48 Vdc.
E&M Signaling	E&M signaling uses separate leads (separate from the 2-Wire or 4-Wire
	audio lines) for detecting incoming calls (E-Lead), and sending off-
	hook and on-hook signals (M-Lead).
EDACS	Enhanced Digital Access Communications System
EDACS Interface panel	The panel at the top rear of most EDACS equipment cabinets
	containing modules that allow quick and easy interconnection of all
	audio and control functions in an EDACS installation.
ELI	Enhanced Local Interconnect - a telephone interface system for use with
	EDACS repeater channels, under the direction of the Site Controller
	computer.
ELI Interface Module	The ELI Interface module (used in the EDACS Interface panel at the
	top of each cabinet containing GTI units) is used to consolidate the
	telephone line connections for 6 GTI units into a single 25-pair IDC
	telco connector.
GETC	A GETC is a trunking card that can be configured for many
	applications. The GETC mentioned in this manual is the Station GETC.
	One Station GETC must be connected to each repeater used in an
	EDACS installation to permit trunking of that radio channel.
GID	Group ID - a unique number used by a group of radios to work with an
	EDACS system.

55