Ericsson LBI-39076B Spécifications télécharger pdf (Page 55)

GLOSSARY LBI-39076

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.

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Ericsson LBI-39076B Spécifications Page 55

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