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E&M rEceive & transMit/Ear & Mouth signaling |
E-COM Electronic Computer Originated Mail |
E911 Enhanced 911 |
EADAS Engineering and Administrative Data Acquisition System |
EADAS/NM EADAS/Network Management |
EAEO Equal Access End Office |
EARN European Academic Research Network |
EAS Extended Announcement System |
EAS Extended Area Service |
EASD Equal Access Service Date |
EBCDIC Extended Binary Coded Decimal Interexchange Code |
ECAP Electronic Customer Access Program |
ECC Enter Cable Change |
ECCS Economic C (hundred) Call Seconds |
ECF Enhanced Connectivity Facility |
ECPT Electronic Coin Public Telephone |
ECS Electronic Crosconnect System |
EDAC Electromechanical Digital Adapter Circuit |
EDI Electronic Data Interchange |
EDP Electronic Data Processing |
EDSX Electronic Digital Signal X-connect |
EECT End-to-End Call Trace |
EEDP Expanded Electronic tandem switching Dialing Plan |
EEHO Either End Hop Off |
EEI Equipment-to-Equipment Interface |
EFRAP Electronic Feeder Route Analysis Program |
EIA Electronics Industries Assotiation |
EIS Expanded Inband Signaling |
EISS Economic Impact Study System |
EKTS Electronic Key Telephone Sets |
EML Expected Measured Loss |
EMS Expanded Memory Specification |
ENFIA Exchange Network Facility for Interstate Access |
EO End Office |
EOE Electronic Order Exchange |
EOS Extended Operating System |
EOTT End Office Toll Trunking |
EPL Electronic switching system Program Language |
EPROM Erasable Programmable Read-Only Memory |
EPSCS Enhanced Private Switched Communication Service |
ER Error Register |
ERAR Error Return Address Register |
EREP Environmental Recording Editing and Printing |
ERL Echo Return Loss |
ERP Effective Radiated Power |
ERU Error Return address Update |
ESAC Electronic Surveillance Assistance Center |
ESB Emergency Service Bureau |
ESF Extended SuperFrame |
ESL Emergency Stand-Alone |
ESN Electronic Serial Number |
ESN Electronic Switched Network |
ESP Enhanced Service Provider |
ESS Electronic Switching System |
ESSX Electronic Switching Systen eXchange |
ETAS Emergency Technical ASsistance |
ETF Electronic Toll Fraud |
ETN Electronic Tandem Network |
ETS Electronic Tandem Switching |
ETS Electronic Translation System |
ETSACI Electronic Tandem Switching Adminstration Channel Interface |
ETSSP ETS Status Panel |
FA Fuse Alarm |
FACS Facilities Assignment and Control System |
FAR Federal Acquisition Regulation |
FAST First Application System Test |
FAT File Allocation Table |
FCAP Facility CAPacity |
FCC Federal Communications Commission |
FCC Forward Command Channel |
FCG False Cross or Ground |
FCS File Control Systemction |
FCS Frame Check Sequence |
FDM Frequency-Division Multiplexing |
FDP Field Development Program |
FDX Full DupleX |
FED Far End Data |
FEMF Foreign Electro-Motive Force |
FEPS Facility and Equipment Planning System |
FEV Far End Voice |
FGA Feature Group A |
FGB Feature Group B |
FGC Feature Group C |
FGD Feature Group D |
FIFO First In, First Out |
FIOC Frame Input/Output Controller |
FIP Facility Interface Processor |
FIPS Federal Information Processing Standards |
FM Frequency Modulation |
FMAC Facility Maintenance And Control |
FNPA Foreign Numbering Plan Area |
FOC Fiber Optic Communications |
FON Fiber Optics Network |
FR Flat Rate |
FRS Flexible Route Selection |
FSK Frequency Shift Keying |
FTG Final Trunk Group |
FTP File Transfer Protocol |
FTS Federal Telecommunications System |
FX Foreign eXchange |
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