NDA-24298 CHAPTER 3
Page 35
Issue 1
OFFICE DATA DESIGN SHEET
Table 3-1 identifies 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
D
term
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