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CII Call Identity Index |
CIS Customized Intercept Service |
CLASS Centralized Local Area Selective Signaling |
CLASS Custom Local Area Signaling Service |
CLDN Calling Line Directory Number |
CLEI Common-Language Equipment Identification |
CLI Calling Line Ident |
CLID Calling Line IDentification |
CLLI Common-Language Location Identification |
CMAC Centralized Maintenance and Administration Center |
CMC Construction Maintenance Center |
CMDF Combined Main Distributing Frame |
CMDS Centralized Message Data System |
CMS Call Management System |
CMS Circuit Maintenance System |
CMS Communications Management Subsystem |
CMS Conversational Monitoring System |
CMT Cellular Mobile Telephone |
CMU COLT Measurement Unit |
CN Change Notice |
CN/A Customer Name/Address |
CNA Communications Network Application |
CNAB Customer Name/Address Bureau |
CNCC Customer Network Control Center |
CNI Common Network Interface |
CNMS Cylink Network Management System |
CNS Complimentary Network Service |
CO Central Office |
COAM Customer Owned And Maintained |
COC Circuit Order Control |
COCOT Customer-Owned Coin-Operated Telephone |
CODCF Central Office Data Connecting Facility |
CODEC COder-DECoder |
COE Central Office Equipment |
COEES COE Engineering System |
COLT Central Office Line Tester |
COMSAT COMmunications SATellite |
CONN CONNector |
CONTAC Central Office NeTwork ACcess |
CONUS CONtinental United States |
CORNET CORperate NETwork |
COSMIC COmmon Systems Main InterConnection frame system |
COSMOS COmputerized System for Mainframe OperationS |
COT Central Office Terminal |
CP Control Program |
CPC Cellular Phone Company |
CPC Circuit Provisioning Center |
CPD Central Pulse Distributor |
CPE Customer-Premises Equipment |
CPH Cost Per Hour |
CPI Computer Private branch exchange Interface |
CPM Cost Per Minute |
CPMP Carrier Performance Measurement Plan |
CPU Central Processing Unit |
CRAS Cable Repair Administrative System |
CRC Customer Record Center |
CRC Cyclic Redundancy Check |
CREG Concentrated Range Extension with Gain |
CRFMP Cable Repair Force Management Plan |
CRIS Customer Record Information System |
CRS Centralized Results System |
CRSAB Centralized Repair Service Answering Bureau |
CRT Cathode Ray Tube |
CSA Carrier Serving Area |
CSACC Customer Service Administration Control Center |
CSAR Centralized System for Analysis Reporting |
CSC Cell Site Controller |
CSDC Circuit Switched Digital Capability |
CSNET Computer Science NETwork |
CSO Central Services Organization |
CSS Computer Sub-System |
CSU Channel Service Unit |
CTC Central Test Center |
CTM Contac Trunk Module |
CTMS Carrier Transmission Measuring System |
CTO Call Transfer Outside |
CTSS Cray Time Sharing System |
CTT Cartridge Tape Transport |
CTTC Cartridge Tape Transport Controller |
CTTN Cable Trunk Ticket Number |
CU Control Unit |
CU Customer Unit |
CU/TK Common Update/EQuipment system |
CUCRIT Capital Utilization CRITeria |
CVR Compass Voice Response |
CWC City-Wide Centrex |
D/A Digital to Analog |
DA Directory Assistance |
DACS Digital Access Cross-connect System |
DACS Directory Assistance Charging System |
DAIS Distributed Automatic Intercept System |
DARC Division Alarm Recording Center |
DARU Distributed automatic intercept system Audio Response Unit |
DAS Directory Assistance System |
DAS Distributor And Scanner |
DAS-WDT Distributor And Scanner-Watch Dog Timer |
DASD Direct Access Storage Device |
DAV Data Above Voice |
DB Decibel |
DBA Data Base Administrator |
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