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Overlay Area Code

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Overlay Area Code - A solution to the scarcity of new phone numbers, overlays involve issuance of new 10-digit phone numbers for use alongside an area's existing seven-digit numbers, which have a different area code.


0-9
- 1.5-Way Paging
- 1.7-Way Paging
- 1G
- 2.5G
- 2G
- 711
- 802.11


A
- A and B PCS Blocks
- A Block
- A-Key
- A/B Switch
- Access Fee
- Access Line
- Adjacent Channel Interference
- Advanced Intelligent Network (AIN)
- Advanced Mobile Phone Service (AMPS)
- Affiliate
- Air Interface
- Airtime
- Alphanumeric
- American Mobile Telecommunications Association (AMTA)
- American National Standards Institute (ANSI)
- Analog
- Antenna
- Application-Specific Integrated Circuit (ASIC)
- Association of Public-Safety Communications Officials-International (APCO)
- Attenuation
- Authentication
- Automatic Vehicle Location (AVL)
- Average Revenue Per Unit (ARPU)


B
- B Block
- B Carrier
- Bandwidth
- Base Station
- Base Station Controller (BSC)
- Base Transceiver Station (BTS)
- Basic Trading Area (BTA)
- Bent Pipe Technology
- Big LEO
- Bluetooth
- Broadband
- Broadband PCS
- Bundling


C
- C Block
- Call Barring
- Call Divert
- Call Hold
- Call Restriction
- Call Transfer
- Call Waiting
- Caller ID
- Calling Plan
- Cap Code
- cdma2000
- cdmaOne
- Cell
- Cell Phone
- Cell Site
- Cell Splitting
- Cellular
- Cellular Base Station
- Cellular Digital Packet Data (CDPD)
- Cellular Telecommunications and Internet Association (CTIA)
- Channel
- Churn
- Circuit Switch Data (CSD)
- ClassLink
- Clone/Cloning
- Code Division Multiple Access (CDMA)
- Collocation
- Commercial Mobile Radio Service (CMRS)
- Communications Assistance to Law Enforcement Act (CALEA)
- Competitive Local Exchange Carrier (CLEC)
- Content Services
- Control Channel
- Coverage
- Crosstalk
- Customer Acquisition Cost


D
- D and E PCS Blocks
- Decibel (dB)
- Digital
- Digital Cellular System (DCS 1800)
- Digital Signal Processor (DSP)
- Disaggregation
- Downlink
- Drive Test
- Dual Band
- Dual Mode


E
- Electromagnetic Energy
- Electromagnetic Field
- Electromagnetic Radiation
- Electromagnetic Spectrum
- Electronic Serial Number (ESN)
- Encryption
- Enhanced 911 (E911)
- Enhanced Data for GSM Evolution (EDGE)
- Enhanced Specialized Mobile Radio (ESMR)
- European Telecommunications Standards Institute (ETSI)


F
- F PCS Block
- Federal Communications Commission (FCC)
- Fiber Optic
- FireWire
- Flash Memory
- Foliage Attenuation
- Frame Relay
- Frequency
- Frequency Modulation (FM)
- Frequency Reuse


G
- Gateway
- Gateway GPRS Support Node (GGSN)
- General Packet Radio Service (GPRS)
- Global Positioning System (GPS)
- Global System for Mobile Communications (GSM)
- Globalstar
- GSM 1800
- GSM 1900
- GSM 900
- GSM Hosted SMS Teleservice (GHOST)


H
- Half-Rate
- Handheld Device Markup Language (HDML)
- Handoff
- Hands-Free
- Handset Subsidy
- Hertz (Hz)
- High-Speed Circuit Switched Data (HSCSD)
- Home Location Register (HLR)


I
- I-Mode
- Incumbent Local Exchange Carrier (ILEC)
- Independent Telephone Network (ITN)
- Industrial Telecommunications Association (ITA)
- Infrared Data Association (IrDA)
- Integrated Circuit Card ID (ICCID)
- Integrated Digital Enhanced Network (iDEN)
- Intelligent Roaming Database (IRDB)
- Interactive Messaging
- Interconnection
- Interim Standard (IS)
- International Mobile Equipment Identifier (IMEI)
- International Mobile Subscriber Identifier (IMSI)
- International Mobile Telecommunications Association (IMTA)
- International Telecommunication Union (ITU)
- Interoperability
- Ionizing Radiation
- Iridium
- IS-136
- IS-41
- IS-54
- IS-661
- IS-95


J
- Japanese Total Access Communication (JTAC)


L
- Land Line
- Lithium-Ion Battery (Li-Ion)
- Local Calling Area
- Local Mulitpoint Distribution Service (LMDS)
- Local Number Portability (LNP)
- Local Service Footprint
- Local-State Governmental Advisory Committee (LSGAC)
- Low Earth Orbit


M
- Major Trading Area (MTA)
- Memory Effect
- Metropolitan Statistical Area (MSA)
- Microcell
- Microwaves
- Middleware
- Mobile Identification Number (MIN)
- Mobile Satellite Service
- Mobile Telephone Switching Office (MTSO)
- Modem Pools
- Multipath Propagation
- Multiplexing
- Mutual Compensation
- Mutually Exclusive Applications


N
- Narrowband Advanced Mobile Phone System (NAMPS)
- Narrowband PCS
- National Emergency Numbering Association (NENA)
- National Telecommunications and Information Administration (NTIA)
- Network
- Nickel Cadmium Battery (NiCd)
- Nickel Metal Hydride Battery (NiMH)
- Nordic Mobile Telephone (NMT)
- North American Cellular Network (NACN)
- North American Numbering Council (NANC)
- Number Assignment Module (NAM)
- Number Pooling
- Number Portability


O
- Off-Peak
- Omnibus Budget Reconciliation Act of 1993 (OBRA 93)
- Operators Harmonization Group (OHG)
- Over-The-Air Service Provisioning (OTASP)
- Overlay Area Code


P
- Partitioning
- PCS Phone
- Peak
- Penetration
- Personal Communications Industry Association (PCIA)
- Personal Communications Service (PCS)
- Personal Digital Cellular (PDC)
- Personal Identification Number (PIN)
- PIN Unblocking Key (PUK)
- Project 25
- Public Switched Telephone Network (PSTN)
- Public Utility Commission (PUC)
- Public-Safety Answering Point (PSAP)
- Pull SMS
- Push SMS


R
- Radiation
- Radio Frequency (RF)
- Radio Waves
- Radio-Frequency Fingerprinting
- Rate Center
- Repeater
- Roaming
- Roaming Agreement
- Round-Up Calls/Billing


S
- S-Band
- Service Charge
- Service Plan
- Short Message Service (SMS)
- Short Message Service Center (SMSC)
- SIM Card
- Simple Network Paging Protocol (SNPP)
- Simulcast
- Sleep Mode
- Smart Antenna
- Smart Card
- Smart Phone
- Soft Handoff
- Soft Key
- Space Division Multiple Access (SDMA)
- Specialized Mobile Radio (SMR)
- Specific Absorption Rate (SAR)
- Spectrum
- Spectrum Allocation
- Spectrum Assignment
- Spectrum Cap
- Spread Spectrum
- Standby Time
- Stratospheric Platform
- Strongest Signal
- Subscriber Fraud
- Subscriber Identity Module (SIM)
- Subscriber Profiling
- Switch


T
- Talk Time
- TD-CDMA
- Telecommunications
- Telecommunications Industry Association (TIA)
- Telematics
- Telematics Control Unit (TCU)
- Telephone Network
- Telephone Transmission Tower
- Telephony
- Termination Charges
- Third Generation (3G)
- Time Division Multiple Access (TDMA)
- Total Access Communication System (TACS)
- Transceiver
- Tri-Band
- Tri-Mode
- Triangulation
- Trunking


U
- Universal Mobile Telecommunications System (UMTS)
- Universal Wireless Communications Consortium (UWCC)
- Uplink
- UWC-136


V
- Visitor Location Register (VLR)
- Voice Activation
- Voice Recognition


W
- Wavelength
- Wideband CDMA (WCDMA)
- Wideband Packet CDMA (WPCDMA)
- Wireless Application Protocol (WAP)
- Wireless Communications Services (WCS)
- Wireless Instant Messaging (WIM)
- Wireless Intelligent Network (WIN)
- Wireless Markup Language/Script (WML/WMLScript)
- Wireless Telephone Base Station
- Wireless Transport Layer Security (WTLS)
- Wireline


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