ND-70348 (E) CHAPTER 3
Page 51
Revision 3.0
OFFICE DATA DESIGN SHEET
The function name of each circuit card used for the system is shown below.
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
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
PFT Power Failure Transfer
PLO Phase Lock Oscillator for 4IMG/16IMG
RGU Ringing Generator Unit
RST Register Sender Trunk
TLT Tie Line Trunk
TSW Time Division Switch
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