NEC NDA-24298 manual Circuit Card Function Name, Symbol Description

Models: NDA-24298

1 1020
Download 1020 pages 51.64 Kb
Page 69
Image 69

OFFICE DATA DESIGN SHEET

Table 3-1identifies the function name of each circuit card used for the system.

Table 3-1 Circuit Card Function Name

SYMBOL

DESCRIPTION

 

 

ATI

Attendant Console Interface

 

 

BWT

Bothway Trunk

 

 

CCH

Common Channel Handler

 

 

CFT

Conference Trunk

 

 

COT

Central Office Trunk

 

 

CPR

Central Processing Rack

 

 

DCH

D Channel Handler

 

 

DID

Direct Inward Dialing

 

 

DIT

Direct-In Termination

 

 

DLC

Digital Line Circuit

 

 

DOD

Direct Outward Dialing

 

 

Dterm

Digital Multi-Function Telephone

DTI

Digital Interface

 

 

DTL

Data Terminal Line Circuit

 

 

ELC

Electronic Line Circuit

 

 

EMT

Equipment & Maintenance Trunk

 

 

HWU

Howler Tone Unit

 

 

IOC

Input/Output Controller

 

 

LC

Line Circuit

 

 

LTST

Line Test

 

 

MDF

Main Distribution Frame

 

 

MFCT

Multi-frequency Trunk

 

 

MUX

Multiplexer

 

 

ODT

Office Data Trunk

 

 

OSC

Oscillator for 1-IMG

 

 

PFT

Power Failure Transfer

 

 

PLO

Phase Lock Oscillator for 4-IMG/IPX-U

 

 

RGU

Ringing Generator Unit

 

 

RST

Register Sender Trunk

 

 

TLT

Tie Line Trunk

 

 

TSW

Time Switch

 

 

NDA-24298CHAPTER 3

Page 35

Issue 1

Page 69
Image 69
NEC NDA-24298 manual Circuit Card Function Name, Symbol Description