Here are the most common telecom acronyms starting with E from the world of computer networking.
← Back to Full Telecom Acronyms| E | Irradiance (or spectral irradiance) |
| E&M signaling | A signaling arrangement characterized by the use of separate paths for the signaling and the voice signals (derived from “Ear” and “Mouth“) |
| E/MARCS | Enhanced/Mechanized Assignment Record Conversion System |
| E/N/W | Evening/Night/Weekend |
| E/W | Engineered and Wired |
| E911 | Enhanced 911 Service |
| EA | Equal Access (switching) |
| EADAS | Engineering and Administration Data Acquisition System |
| EADAS/DC | Engineering and Administration Data Acquisition System – Data Collection |
| EADAS/NM | Engineering and Administration Data Acquisition System – Network Management |
| EADP | Enhanced Adjunct Data Processor |
| EAEO | Equal Access End Office |
| EAI | Electronic Associates, Inc. |
| EAI | Emergency Action Interface |
| EAN | Equipment Access Network |
| EAP | Employee Assistance Program (HR) |
| EAROM | Electrically Alterable Read Only Memory |
| EAS | Equal Access Signaling |
| EAS | Extended Service Area |
| EASOP | Economic Alternative Selection for Outside Plant |
| EBCD | Extended Binary Coded Decimal |
| EBCDIC | Extended Binary Coded Decimal Interchange Code |
| EBCU | Equivalent Basic Call Unit |
| EBF | Emergency Bug Fix |
| EBMG | Eastern Business Marketing Group |
| EBO | Executive Busy Override |
| EBS | Electronic Business Set |
| EBT | Electronic Benefits Transfer |
| EBU | Emitter Coupled Logic Bus Unit |
| E-BUS | Emitter Coupled Logic Bus Unit Associated Bus Cables |
| EC | Echo Canceller |
| ECA | Exchange Carrier Association |
| ECC | Error Correcting (or Correction) Code |
| ECD | Equipment Configuration Database |
| ECIS | Embedded Common Channel Interoffice Signaling |
| ECL | Emitter-Coupled Logic |
| ECLIPS | Enhanced Clearline Proposal System |
| ECMA | European Computer Manufacturers Association |
| ECN | Engineering Change Notice |
| ECORE | Enhanced Core |
| ECP | Enhanced Call Processing |
| ECR | Electronic Cash Register |
| ECR | Engineering Change Request (MFG) |
| ECS | Error Correction Switch |
| ECS | Extended Core Storage |
| ECSA | Exchange Carriers Standards Association |
| ECT | Echo Cancellation Technique |
| EDAL | Engineering Documentation Authorization List |
| EDALS | Extended Dedicated Access Line Service |
| EDC | Error Detection and Correction |
| EDI | Electronic Data Interchange |
| EDI | Electronic Data Interchange (NOCC) |
| EDLCP | External Data Link Communications Package |
| EDP | Electronic Data Processing |
| EDSAC | Electronic Delay Storage Automatic Calculator |
| EDSL | Extended Digital Subscriber Line |
| EDSX | Electronic Digital Cross Connect |
| EDUCOM | Educational Communications (name of Interuniversity Communications Council) |
| EDVAC | Electronic Discrete Variable Automatic Computer |
| EEHO | Either End Hop Off |
| EEOC | Equal Employment Opportunity Commission |
| EEPROM | Electrically Erasable Programmable Read-Only Memory |
| EFRAP | Exchange Feeder Route Analysis Program |
| EFS | Error Free Seconds |
| EFTS | Electronic Funds Transfer Systems |
| EGP | Exterior Gateway Protocol |
| EHF | Extremely High Frequency |
| EI | External Input |
| EIA | Electronic Industries Association |
| EICC | Emergency Information and Coordinating Center |
| EIF | External Interface File |
| EIOC | Enhanced Input/Output Controller |
| EIOC | Enhanced Input/Output Controller |
| EIR | Employee Information Record (HR) |
| EIRP | Effective Isotropic Radiated Power |
| EIS | Expanded Inband Signaling |
| EJC | Early Job Conference |
| EKTS | Electronic Key Telephone Set |
| ELA | Extended Line Adapter |
| ELI | Extensible Language I |
| ELN | Essential Line Service |
| ELP | Encode Level Point |
| ELS | Electronic Loop Segregation |
| ELST | Electronic Loop Segregation Test |
| Electronic Mail | |
| EMAS | Electronic Multiline Appearances Set |
| EMC | Electromagnetic Compatibility |
| EMD | Equilibrium Mode Distribution |
| EMF | Electromagnetic Force |
| EMF | Electromotive Force |
| EMI | Electromagnetic Interference |
| EML | Estimated Measured Loss |
| EMMS | External Message Management System |
| EMP | Electromagnetic Pulse |
| EMP | Equipment Management Plan |
| EMR | Electromagnetic Radition |
| EMS | Electronic Mail System |
| EMS | Equilibrium Mode Simulator |
| EMSCC | Electro-Mechanical Switching Control Center |
| EMV | Electromagnetic Vulnerability |
| ENFIA | Exchange Network Facilities Interconnect Arrangement |
| ENG | Engineering |
| ENQ | Enquiry (Bisynch control character) |
| ENS | Extended Network Services |
| EO | End Office |
| EO | Engineering Order (MFG) |
| EO | Executive Order |
| EOB | End of Block |
| EOB | Executive Office Building |
| EOD | End of Data |
| EOF | End of File |
| EOM | End of Message |
| EON | End of Number |
| EOP | Executive Office of the President |
| EOT | End of Transmission (Bisync control character) |
| EOTS | Equipment Order Tracking System |
| EPA | Environmental Protection Agency (U.S.) |
| EPABX | (Digital) Electronic Private Automatic Branch Exchange |
| EPLANS | Engineering, Planning, and Analysis Systems |
| EPROM | Erasable Programmable Read Only Memory |
| EPS | Encapsulated PostScript |
| EPSCS | Enhanced Private Switched Communications Service |
| EPSN | Enhanced Private Switched Network |
| EPSS | Experimental Packet Switching System |
| EPU | Extended Processing Unit |
| EQL | Equipment Location |
| EQUIPDAT | Equipment Database |
| ER | Error Rate |
| ERA | Engineering Research Associates |
| ERCC | Eastern Regional Control Center (NOCC) |
| ERD | Entity Relationship Diagram (IS) |
| ERDT | Expensive Route Delay Time |
| ERL | Echo Return Loss |
| Erlang | Dimensionless unit of traffic intensity used to express the average number of calls underway or the average number of devices in use |
| ERMA | Equipment Repair and Maintenance Applications |
| ERS | Emergency Restoration Services |
| ERS | Employee Records System (no longer used, replaced by HRIS) |
| ERWT | Expensive Route Warning Tone |
| ES | End System |
| ES | Enterprise System |
| ES | Errored Seconds |
| ES/IS | End System/Intermediate System |
| ESA | Emergency Stand Alone |
| ESAC | Electronic Switching Assistance Center |
| ESF | Extended SuperFrame |
| ESFMS | Extended SuperFrame Format Monitoring System |
| ESL | Essential Service Lines (Emergency Service (911) with ringdown trunk) |
| ESN | Electronic Switched Network (Northern Telecom Inc. DMS-100) |
| ESP | Employee Stock Program (HR) |
| ESP | Enhanced Service Provider |
| ESP | Enhanced Services Platform |
| ESP | Essential Service Protection |
| ESPP | Employee Stock Purchase Plan |
| ESPRIT | European Strategic Program for R&D in Information Technologies |
| ESS | Electronic Switching Service |
| ESS | Electronic Switching System |
| ESS/CO | Electronic Switching Service/Central Office |
| ET | Exchange Termination |
| ETACS | Extended Total Access Communications System |
| ETAS | Emergency Technical Assistance Service |
| ETB | End of Block (Bisync control character) |
| ETHIS | Enhanced Trouble Handling Information System |
| ETI | Electronic Telephone Interface |
| ETL | Equipment Test List |
| ETN | Electronic Tandem Network (AT&T Technologies) |
| ETS | Electronic Tandem Switching |
| ETS | Electronic Telephone Set |
| ETS | Electronic Translator System |
| ETSI | European Telecommunications Standards Institute |
| ETV | Educational Television |
| ETX | End of Text (Bisync control character) |
| E-type pulsing signal | An end of pulsing signal used when panel call indicator (PCI) traffic is completed through a crossbar tandem |
| EUCI | Endorsed for Unclassified Cryptographic Items |
| EUS | End User Services |
| EUT | Equipment Under Text |
| EVA | Extreme Value Administration |
| EVE | Extreme Value Engineering |
| EVFU | Electronic Vertical Format Unit |
| EVHD | Extreme Value Estimate of High Day |
| EVR | Electronic Video Recording |
