Site Map
Main Pages
- Introduction to BT21CN
- Asterisk and SER: Hands-on
- CCENT:Hands-on
- Cisco Routing and Switching: Hands On
- Enterprise Architecture Solutions - From TOGAF to NGOSS
- H.248 and Softswitching Architecture and Protocols
- Introduction to GSM System Engineering
- Introduction to IP Engineering
- Introduction to IP Security
- Introduction to MPLS
- Introduction to MPLS and Carrier Ethernet
- Introduction to Next Generation Networks (NGN)
- Introduction to Telecoms
- Introduction to Telecoms Regulation
- Introduction to VoIP and IMS
- Introduction to xDSL Networks and Services
- IP and MPLS Traffic Engineering
- IPTV and Triple-Play Networks and Services
- IPv6 Protocols and Deployment
- Managing Product Development: Hands-On
- MPLS Pseudowires, VPNs and VPLS
- NGOSS in NGN: Hands-on
- QoS in IP and MPLS Networks
- Security in Linux Systems: Hands-on
- SNORT and NESSUS: Hands-on
- Successful Business Cases: Hands-On
- UMTS Architecture and Protocols
- UMTS System Engineering
- Understanding Teams: Hands-On
- VSAT Systems Engineering
- WiMAX and LTE Architecture and Protocols
- Introduction to BT21CN
- Enterprise Architecture Solutions - From TOGAF to NGOSS
- Introduction to GSM System Engineering
- Introduction to IP Engineering
- Introduction to IP Security
- Introduction to MPLS
- Introduction to MPLS and Carrier Ethernet
- Introduction to Next Generation Networks (NGN)
- Introduction to Telecoms
- Introduction to VoIP and IMS
- Introduction to xDSL Networks and Services
- IP and MPLS Traffic Engineering
- IPv6 Protocols and Deployment
- Managing Product Development: Hands-On
- MPLS Pseudowires, VPNs and VPLS
- QoS in IP and MPLS Networks
- Successful Business Cases: Hands-On
- UMTS Architecture and Protocols
- UMTS System Engineering
- Understanding Teams: Hands-On
- WiMAX and LTE Architecture and Protocols
- Access & Transmission
- Applications
- Architectures & IT
- Business and Regulation
- Introductory
- Mobile & Wireless
- Security
- Telecoms IP
- Voice and VoIP
Articles
- Capabilities of the Secure Shell Protocol
- Carrier Ethernet and Provider Backbone Bridging
- Cisco IP Access Lists
- Competing Standards for Mobile TV
- Consultancy for Large County Council
- Convergence of Mobile and Fixed Telco Architectures
- Development of the 802.16/WiMAX Standards
- Development of the Internet
- Diffie-Helman Key Exchange
- European Union Regulation of Telecoms
- Evolution of Enterprise Architecture Models
- First Public Course in Mexico
- First Public Telecoms Training Course in Lisbon
- Hash Functions and Message Digests
- History of Telecoms Regulation in UK
- Introduction to Enterprise Architecture
- Introduction to TOGAF
- MPLS Virtual Private Networks (VPNs)
- Next Generation Access (NGA)
- Next Generation Networks (NGN)
- NGN Telecoms Information Assurance
- Operation of HyperText Transfer Protocol (HTTP)
- Platform Hardening to Improve Security
- Prestigiada Empresa de Telecomunicaciones Requiere Instructores Bilingües (Español/Inglés)
- Primer Curso Público en México
- Protecting Critical Management Protocols From Attack
- Provider Backbone Transport (PBT)
- QoS Standards for IP Networks and Services
- Quality of Service versus Traffic Management in Packet Networks
- Signalling Transport (SIGTRAN) Using SCTP
- SKYPE's Roadmap and Architecture
- Standards For IPTV over DVB-H
- The Architecture of Secure Shell (SSH)
- The role of ENUM in NGNs
- The Shift From Telco to ICT Provider
- The TISPAN NGN Architecture
- Traffic Management Techniques for Packet Networks
- Training Matched to the Business Need for Telcos
- Transport Options for Metro Ethernet
- UK and EU Regulation of Voice
- Understanding Classless Inter-domain Routing (CIDR)
- Understanding Internet Registries
- Understanding IPv4 Addressing
- Understanding IPv4 Subnets
- Understanding Ofcom Spectrum Management
- Understanding the ISO 7-Layer Model
- Voice Quality Measurement
- VoIP Standards Compared
Venues
- Bromsgrove Technology Park
- Green Park, Reading
- Siglum Insurgentes Sur, Mexico City
- Torres de Lisboa, Lisbon
Extras
- Bi-lingual (Spanish/English) Telecoms Trainers Needed
- Consultancy
- Coursebook Sample: Ethernet Switch Operation
- Coursebook Sample: IPv4 Addressing
- Coursebook Sample: Wireless LAN Security
- Coursebook Sample: Wireless LANs
- Coursebook Samples
- Download Free Compact Glossary Tool
- Download Free Main Page Glossary Tool
- Download Free Sidebar Glossary Tool
- Flash Video How-to's
- Free Intro to Telecoms Course
- Full Public Course Schedule
- general quiz test
- Hotels Near Green Park, Reading
- Hotels near Torres de Lisboa, Lisbon
- Introduction to eTOM Briefing
- Join Our Partner Program
- Next Generation Networks Crossword Puzzle
- Prestigiada Empresa de Telecomunicaciones Requiere Instructores Bilingües (Español/Inglés)
- Professional Memberships and Accreditation's
- Sorry you're Leaving our Subscriber Group
- Video: Course Author Describes
- Video: Intro to Telecoms: Autonomous System (AS) Numbers and Peering
- Video: Intro to Telecoms: Circuit versus Packet Switching
- Video: Intro to Telecoms: FCAPS Management
- Video: Intro to Telecoms: History of Regulation
- Video: Intro to Telecoms: History of Telephony
- Video: Intro to Telecoms: History of the Internet
- Video: Intro to Telecoms: Internet Registries and CIDR
- Video: Intro to Telecoms: Introduction
- Video: Intro to Telecoms: IP Address Classes
- Video: Intro to Telecoms: ISO and TCP/IP Protocol Models
- Video: Intro to Telecoms: The Domain Name System
- Video: Intro to Telecoms: Triple and Quad Play
- Video: Intro to Telecoms: Types of Layer Two Switching
- Video: Intro to Telecoms: UK Market Analysis
- Welcome to Our Subscriber Group!
Glossary
- 100rel
- 2.5G
- 2G
- 3G
- 3G-GMSC
- 3G-MSC
- 3G-SGSN
- 3GPP
- 3GPP TR 11.01
- 3GPP TR 11.1
- 3GPP TR 11.10-1
- 3GPP TR 11.10-2
- 3GPP TR 11.10-3
- 3GPP TR 11.10-4
- 3GPP TR 11.10-5
- 3GPP TR 21.133
- 3GPP TR 25.133
- 3GPP TR 25.201
- 3GPP TR 25.211
- 3GPP TR 25.212
- 3GPP TR 25.213
- 3GPP TR 25.214
- 3GPP TR 25.215
- 3GPP TR 25.301
- 3GPP TR 25.302
- 3GPP TR 25.303
- 3GPP TR 25.304
- 3GPP TR 25.305
- 3GPP TR 25.306
- 3GPP TR 25.308
- 3GPP TR 25.309
- 3GPP TR 25.321
- 3GPP TR 25.322
- 3GPP TR 25.323
- 3GPP TR 25.324
- 3GPP TR 25.331
- 3GPP TR 25.401
- 3GPP TR 25.402
- 3GPP TR 25.409
- 3GPP TR 25.41
- 3GPP TR 25.411
- 3GPP TR 25.412
- 3GPP TR 25.413
- 3GPP TR 25.414
- 3GPP TR 25.415
- 3GPP TR 25.419
- 3GPP TR 25.42
- 3GPP TR 25.421
- 3GPP TR 25.422
- 3GPP TR 25.423
- 3GPP TR 25.424
- 3GPP TR 25.425
- 3GPP TR 25.426
- 3GPP TR 25.427
- 3GPP TR 25.43
- 3GPP TR 25.431
- 3GPP TR 25.432
- 3GPP TR 25.433
- 3GPP TR 25.434
- 3GPP TR 25.435
- 3GPP TR 25.858
- 3GPP TR 25.877
- 3GPP TR 3.64
- 3GPP TR 3.78
- 3GPP TR 33.102
- 3GPP TR 33.105
- 3GPP TR 33.106
- 3GPP TR 33.2
- 3GPP TR 33.201
- 3GPP TR 33.202
- 3GPP TR 33.203
- 3GPP TR 33.21
- 3GPP TR 34.108
- 3GPP TR 34.109
- 3GPP TR 34.121
- 3GPP TR 34.122
- 3GPP TR 34.123-1
- 3GPP TR 34.123-2
- 3GPP TR 34.123-3
- 3GPP TR 34.124
- 3GPP TR 34.907
- 3GPP TR 34.925
- 3GPP TR 35.201
- 3GPP TR 35.305
- 3GPP TR 35.306
- 3GPP TR 35.309
- 3GPP TR 4.01
- 3GPP TR 4.03
- 3GPP TR 4.04
- 3GPP TR 4.07
- 3GPP TR 4.08
- 3GPP TR 4.18
- 3GPP TR 4.3
- 3GPP TR 4.31
- 3GPP TR 4.35
- 3GPP TR 4.6
- 3GPP TR 4.64
- 3GPP TR 4.65
- 3GPP TR 4.71
- 3GPP TR 4.78
- 3GPP TR 4.86
- 3GPP TR 5.01
- 3GPP TR 5.02
- 3GPP TR 5.03
- 3GPP TR 5.04
- 3GPP TR 5.05
- 3GPP TR 5.5
- 3GPP TR 5.9
- 3GPP TR 51.010-1
- 3GPP TR 51.010-2
- 3GPP TR 51.010-3
- 3GPP TR 51.010-4
- 3GPP TR 51.010-5
- 3GPP2
- 6PE
- 802.1
- 802.11
- 802.11a
- 802.11b
- 802.11d
- 802.11e
- 802.11f
- 802.11g
- 802.11h
- 802.11i
- 802.15
- 802.16
- 802.16-2004
- 802.1X
- 802.2
- 802.3
- 802.5
- 802.6
- 802.7
- 802.9
- 806.16e
- 8PSK
- A interface
- A Link
- A-key
- a-law
- a-number
- A/D
- A1 Interface
- A10 Interface
- A11 Interface
- A2 Interface
- A2DP
- A3
- A3 Interface
- A38
- A5 Interface
- A5/1
- A5/2
- A5/X
- A7 Interface
- A8
- A8 Interface
- A9 Interface
- AAA
- AAL
- AAL1
- AAL2
- AAL5
- AAS
- AB
- Abbreviated Alert
- ABI
- Abis Interface
- ABM
- ABR
- AC
- Access Attempt
- Access Channel
- Access Channel Message
- Access Channel Preamble
- Access Channel Request
- Access Channel Response
- Access Code
- Access Control Method
- Access delay
- Access Handoff
- Access Probe
- Access Protocol
- Access Server
- Access Stratum SDU
- ACCH
- Account Code
- Account Receivable
- Accounting
- Accounts Payable
- Accuracy
- ACD
- ACELP
- ACF
- ACI
- ACID
- ACK Storm
- Acknowledged Mode
- ACL
- ACLR
- ACM
- ACMC
- ACO
- ACS
- ACSE
- Active Communication
- Active Directory
- Active Frame
- Active Mode
- Active Monitor
- Active Set
- Active X
- Activity-based Costing
- ad hoc
- Ad Hoc Network
- Address Mask
- ADDTS
- ADM
- ADPCM
- ADSL
- Advice of Charge
- AEC
- AEF
- AES
- AES-CCM
- AF
- AFI
- AGC
- AGCH
- Agent
- Aging
- AGPS
- AH
- AICH
- AID
- AIFS
- AIPMM
- AirSnort
- AIUR
- AK
- AKA
- Alarm
- ALCAP
- Alert
- Allocation
- AM
- AM to PM
- Ambient Noise
- AMIS
- Amortization
- Amplifier
- AMPS
- AMR
- AM_ADDR
- Analogue signal
- Analogue transmission
- Analysis Paralysis
- ANI
- ANM
- Announcement
- ANS
- ANSI
- Answerback
- Antenna Gain
- antireplay
- AoC
- AoCC
- AoR
- AP
- AP-AICH
- APCH
- APH
- API
- APN
- Applet
- Application
- Application Architecture
- Application Association
- Application Component
- Application Context
- Application Framework
- Application Generator
- Application Interface
- Application Server
- Apprentice
- APS
- AR
- Architecture
- Area of Work
- Area Router
- ARI
- ARIB
- ARJ
- ARL
- ARP
- ARPA
- ARPU
- ARQ
- ARU
- AR_ADDR
- AS
- ASA
- ASBR
- ASCII
- ASE
- ASIC
- ASN
- ASN.1
- ASP
- Assets
- Association
- Assumption
- Assured Mode
- AST
- Asymmetric encryption
- Asynchronous
- Asynchronous Connectionless Link
- Asynchronous Disconnect Mode
- AT
- ATB
- ATDPCH
- ATI
- ATIM
- ATIS
- ATM
- ATM Forum
- ATM PVC
- Attachment Circuit
- Attainable Market Share
- Attendant Console
- Attenuation
- Attribute
- Attribute Type
- Attribute Value
- AU
- AuC
- Audio Visual Profile
- Audiotex
- Audit
- AUG
- AUI
- AUTHBS
- Authentication
- Authorization
- AUTHR
- AUTN
- Auto Correlation
- Automated Attendant
- Automated Key Distribution
- AUZ
- AV
- Available Bit Rate
- Average Transmit Power
- AVP
- AVRCP
- AWGN
- B Link
- B-ISDN
- b-number
- B-RAS
- B2B
- B2B2B
- B2BUA
- B2C
- BA List
- Back End
- Backdoor
- Backdoor Accounts
- Backdoor Application
- Backup
- BAIC
- Balance Sheet
- Band
- Band Class
- Bandwidth
- Bandwidth Attacks
- BAOC
- Barrier to Entry
- Base Case
- Baseband
- Basel 2
- Baseline
- Baseline capabilities
- Basic Access Mode
- Basic Connection
- Bastion Server
- BC
- BCC
- BCCH
- BCCH Chip Bit
- BCF
- BCH
- BCIE
- BCM
- BCN
- BCSM
- BDR
- BD_ADDR
- Beacon Carrier
- Bearer
- Bearer Capability
- Bearer service
- BECN
- Behavioral compatibility
- Benchmark
- Benefit
- BER
- Best case
- Best Effort QoS
- Best Effort Service
- Beta test (or trial)
- BF
- BFD
- BFI
- BG
- BGCF
- BGP
- BGP-MP
- BGP4
- BH
- BI
- BIC-Roam
- Billing
- Binding Mechanism
- Biometric Security
- Bitmap
- Black-Box
- Black-Hat Hacker
- Blank and Burst
- BLES
- Blind Transfer
- Blind-Spoofing
- Block Cipher
- Blocked Call
- Blocking
- Blowfish
- Bluetooth
- Bluetooth Clock
- Bluetooth Device Class
- Bluetooth Host
- Bluetooth Profile
- Bluetooth Unit
- Bm
- BMC
- BOIC
- BOIC-exHC
- BOM
- BOOTP
- Bottom-up Forecast
- BPDU
- BPP
- BPSK
- BPSS
- BR
- Brainstorming
- Brand
- Brand Manager
- Break
- Break-even Point
- BRF
- BRI
- Bridge
- Broadband
- Broadcast
- Broadcast Address
- Broadcast Channels
- Broadcast Connection
- Broadcast Storm
- Broadcast User Zone
- Browser
- Brute Force Attack
- BS
- BSA
- BSC
- BSIC
- BSICNCELL
- BSR
- BSS
- BSSAP
- BSSAP+
- BSSAP-LE
- BSSGP
- BSSID
- BSSMAP
- BSSOMAP
- BTS
- Budget
- Buffer Overflow Attack
- Bug
- Bundle
- Burst
- Business Aware Functionality
- Business Component
- Business Component System
- Business Document
- Business Entity
- Business Independent Functionality
- Business Messages
- Business Partner Role
- Business Processes
- Business Rule
- Business Transaction
- Business Transaction Activity
- Busy
- Busy Tone
- Buyer
- BVC
- BVCI
- BWA
- Bytecode
- C
- C Link
- C++
- C-Message Noise
- C-RNTI
- C/R
- C1
- C2
- C31
- C32
- C7
- CA
- CAC
- CACH Chip Bit.
- CAI
- Call Control Function
- Call Deflection
- Call Disconnect
- Call Duration
- Call Forwarding on Busy
- Call Hunting
- Call pickup
- Call Setup Time
- Call Transfer
- Caller ID
- CAMEL
- Camp On
- Campaign
- Candidate Set
- Cannibalisation
- CAP
- Cap-ex
- Capability
- Capacity Management
- CAPEX
- Capital Flow Statement
- Carrier to Interference Ratio
- CAS
- CAST
- CB
- CBC
- CBCH
- CBMI
- CBQ
- CBR
- CBWFQ
- CC
- CCA
- CCBS
- CCC
- CCCH
- CCH
- CCITT
- CCM
- CCP
- CCS
- CCTrCH
- CD/CAICH
- CDI
- CDMA
- CDMA Candidate Frequency
- CDMA Channel
- CDMA Channel Number
- CDMA Frequency Assignment
- CDMA Preferred Set
- CDMA2000
- CDR
- CDV
- CE
- Cell
- Cell (ATM)
- Cell Allocation
- Cell Broadcast Centre
- Cell Relay
- Cell Reselection
- Cell Selection
- CELP
- CEND
- Center SR3 Frequency
- CERT
- Certificate Enrollment
- Certification Request
- CF
- CF (Call Forward)
- CFB
- CFNA
- CFNRc
- CFNRy
- CFP
- CFU
- CGF
- CGI
- Champion
- Channel Coding
- CHAP
- Charge Advice Information
- Chargeable Event
- Charging Collection Function
- Checklist
- Checksum
- ChID
- Chirping
- CHP
- CI
- CIC
- CID
- CIDR
- CINR
- Ciphertext
- CIR
- Circuit Switched
- Circuit Switching
- CK
- CKSN
- Class A Terminal
- Class B Terminal
- Class C Terminal
- Class Type
- Classmark
- CLI
- Client
- CLIP
- Clipping
- CLIR
- CLK
- CLKE
- CLKN
- CLNS
- Closest Match Routing
- CLP
- CM
- CMAC
- CMD
- CMIP
- CMM
- CMP
- CMR
- CN
- CNG tone
- CoA
- CoC
- CoD
- Code Channel
- Code Symbol
- Codebook
- Codec
- Codec Mode Request
- COGS
- ColdFusion
- COM
- Combinational Code
- Common Control Channel
- Common Power Control Sub channel
- Community Strings
- Companding
- Competency
- Competitive Advantage
- Competitive Positioning
- Competitor Profile
- Complementary Products
- Component
- Compression
- Concept
- Concept Phase
- Concept Screening
- Condition
- Conditional Call Forwarding
- Conference Factory
- Confidentiality
- Configuration Change Indicator
- CONNACK
- Connectable Device
- Connected mode
- Consultative Selling
- Consumer
- Continuous Transmission
- Conversational Service
- Convolutional Code
- Cookie Guessing
- COPS
- CORBA
- Core Competency
- CoS
- Cost-plus Pricing
- COUNT
- Country Code
- Coverage area
- CP
- CPCH
- CPCS
- CPE
- CPG
- CPH
- CPICH
- CPM
- CPS
- CPU
- CR-LDP
- Cracker
- CRC
- Criteria
- CRL
- CRM
- CRNC
- Cross-functional Product Team
- Cross-functional Project Team
- CS
- CSA
- CSAP
- CSCF
- CSE
- CSICH
- CSL
- CSMA
- CSMA/CA
- CSMA/CD
- CSN
- CSPDN
- CSPF
- CSRC
- CSV
- CTCH
- CTR
- CTS
- CUG
- CUG Index
- Customer Business Case
- Customer Experience Management
- Customer Focus
- Customer Insights
- Customer Loyalty
- Customer Segments
- Customer Visit
- Customer Visit Plan
- Cut and Paste Attack
- CV
- CVSD
- CW
- CWDM
- Cycle Time
- D Link
- D-channel
- D-CSI
- D-IM-CSI
- DA
- DAC
- DAMPS
- DARPA
- dB
- dBc
- dBm
- dBm/Hz
- dBW
- DCCH
- DCE
- DCF
- DCH
- DCID
- DCN
- DCOM
- DCS1800
- DDoS Attack
- DE
- Decision Checkpoint
- Decision Matrix
- Decision Tree
- Decline Phase
- DECT
- Dedicated Core Team member
- Dedicated mode
- Default Router
- Definition Phase
- Delay
- Deliverable
- Delphi Method
- Demand Planning
- Demographic
- Dependency
- Depreciation
- Derivative
- DES
- Designated Access Mode
- Development
- Development Phase
- Device Discovery
- Device Name
- DFS
- DH
- DHCP
- DHTML
- DIAC
- Dial-Tone Delay
- DIAMETER
- Dictionary Attacks
- Differentiation
- Diffie-Hellman Key Exchange
- DiffServ
- DIFS
- Digital Certificate
- Digital Signature
- Disassociation
- Discount Rate
- Discoverable Device
- Distribution Channel
- Distribution Channel Map
- Distribution System
- Distribution System Service
- DLCI
- DLP
- DM
- DMA
- DMT
- DMZ
- DNIS
- DNS
- Documentation
- Domain Controller
- DOS
- DP
- DP Criteria List
- DPC
- DPCCH
- DPCM
- DPDCH
- DPNSS
- DQPSK
- DR
- DRNC
- DRX
- DS
- DS PHY
- DSA
- DSCP
- DSL
- DSLAM
- Dsp
- DSS
- DSS1
- DSSS
- DT
- DTAP
- DTC
- DTCH
- DTE
- DTI
- DTIM
- DTMF
- DTX
- Duration (task)
- DV
- DWDM
- DXC
- E Carrier
- E-LSP
- E-OTD
- E.164
- E.169
- E1
- E2
- E212
- E2U
- E3
- E4
- EACH
- EAMPS
- EAP
- EAP/AKA Authentication
- EAP/SIM Authentication
- EASCII
- Eb
- EBCDIC
- EBGP
- EBITDA
- ebXML
- ebXML Messaging Service
- EC
- Ec/Io
- ECB
- ECF
- Echo
- Echo Canceller
- ECMP
- ECN
- EDCA
- EDGE
- EEPROM
- EF
- EGP
- EGPRS
- EGSM
- EHF
- EIA
- EIFS
- EIGRP
- EIR
- EIRP
- ELF
- EMS
- Encapsulated PDU
- Encapsulated PDU Fragment
- Encipher
- Encoder Tail Bits
- Encryption
- Encryption Key
- End User
- End-to-End Process Flow
- End-to-End Process Grouping
- Enhanced Access Channel Preamble
- Enhanced Access Channel Slot
- Enhanced Access Data
- Enhanced Access Header
- Enhanced Access Probe
- Enhanced Access Probe Sequence
- Enhanced Product
- Enterprise
- Enterprise Management Process Grouping
- Enterprise Server
- Entity
- Entrepreneur
- ENUM
- EOM
- EOT
- EPD
- EPL
- EPOC
- Epoch
- EPROM
- Equity
- Erlang
- ERO
- ERP
- Erroneous
- ES-IS
- ESA
- ESN
- ESP
- ESS
- ETACS
- ETC
- Ethernet
- Ethernet Address
- Ethernet OAM
- Ethical Hacker
- Ethnography
- eTOM
- ETSI
- EV-DO
- Execution
- Exit Plan
- EXP
- Extranet
- F Link
- F-BCCH
- f-csch
- F-DSCH
- FA
- FA-LSP
- FAC
- FACCH
- FACH
- Fade Timer
- Fast Ethernet
- Fat Client
- FBSS
- Fc
- FCC
- FCCCH
- FCCCH Chip Bit
- FCCH
- FCH
- FCH Chip Bit
- FCH Ec
- FCI
- FCS
- FDCCH
- FDD
- FDDI
- FDM
- FDMA
- FE
- FEA
- Feasibility Phase
- Feature
- Feature Group C
- FEC
- FEC 128
- FEC 129
- FECN
- FFCH
- FFT
- FGA
- FGB
- FH PHY
- FHSS
- Financial Ratio
- Find-me/follow-me
- Fingerprinting
- FIPS
- Firewall
- Firewire
- FISU
- FIX
- Fixed Wireless Local Loop
- Flash
- Flash memory
- Flash RAM
- Flash ROM
- Flood Defender
- Flow-Through
- FM
- FMO
- FN
- FOCC
- Focus Group
- Forecast
- Foreign NID Roamer
- Foreign SID Roamer
- Forward CDMA Channel
- Forwarding Equivalence Class
- FPCH
- FPLMN
- FQI
- Fraggle Attack
- Frame
- Frame Category
- Frame Mutes
- Frame Offset
- Frame Relay
- Framework
- Framing Protocol
- FreeBSD
- FRR
- FSCCH
- FSCH
- FSK
- FSP
- FTCH
- FTFPCH
- FTP
- Full Duplex
- Full TMSI
- Functional Area
- Functional Process Groupings
- Functional Project Team
- Functional Silo
- Functionality of a Product
- Fundamental Channel
- FUSC
- Fuzzy Logic
- FWA
- G Recommendation Series
- G.703
- G.704
- G.707
- G.708
- G.711
- G.723.1
- G.726
- G.729
- G.804
- G.990
- Ga Interface
- GA Product Rating
- GA-CSR
- GA-PSR
- GA-RC
- GAN
- GANC
- Gantt Chart
- Gate
- Gateway
- Gating Rate Set
- GAVDP
- Gb Interface
- Gc Interface
- GCAC
- GCRA
- GD
- GE
- GEO
- GERAN
- GF
- Gf Interface
- GFC
- GFP
- GGSN
- Gi Interface
- GIAC
- GICS
- GIF
- GIX
- GLMS
- GLR
- GMDSS
- GMH
- GMLC
- GMPLS
- GMSC
- GMSK
- GN
- Gn Interface
- GOEP
- Gold Codes
- Good Message
- GOS
- Gp Interface
- GPC
- GPRS
- GPRS-CSI
- gprsSSF
- GPS
- GPSS
- Gr Interface
- Graduated Funnel
- GRE
- Gross Profit
- Group 1 Fax
- Group 2 Fax
- Group 3 Fax
- Group 4 Fax
- Growth Phase
- GRX
- Gs Interface
- GSM
- GSM R
- GSM1800
- GSM1900
- gsmSCF
- gsmSRF
- gsmSSF
- GSN
- GT
- GTP
- GTP-C
- GTP-U
- GTT
- Guardband
- GUI
- Gut-feel Decision Making
- GZIP
- H Channel
- H-NSP
- H-VPLS
- H.221
- H.222
- H.225
- H.230
- H.242
- H.244
- H.245
- H.248
- H.261
- H.263
- H.320
- H.323
- H0 Channel
- H10 Channel
- H11 Channel
- H12 Channel
- HA
- HAA
- Hacker
- Hacktivism
- Half Duplex
- Hamming Code
- Hand-off
- Handoff / Handover
- Handover Word
- HAR
- Hard Handover
- Hardening
- HARQ
- Hashing
- Hashing Algorithm
- Hayes AT Commands
- HCCA
- HCF
- HCI
- HCS
- HDLC
- HDML
- HDSL
- HDTP
- HE-VASP
- HEC
- Hello Packet
- HEMM
- HFP
- High-availability
- Highest SR3 Frequency
- HiperAccess
- HIPERLAN
- HiperLan 2
- HiperLan1
- HIPERLAN2
- HiperLink
- HKE
- HLR
- HMAC
- HO ID
- Hold Mode
- Holistic
- Honeypot
- Hopping Pilot Beacon
- Horizontal Contract
- Host Name Resolution
- HPC
- HPLMN
- HS
- HSCSD
- HSN
- HSS
- HSSI
- HTCP
- HTG
- HTI
- HTML
- HTTP
- HUB
- HV
- I
- I-CSCF
- i-mode
- IA5
- IAB
- IAC
- IAM
- IANA
- IBGP
- IBSS
- IC
- ICANN
- ICID
- ICMP
- ICSP
- ICV
- ID
- IDD
- Idea Category
- Ideation
- Idle Handoff
- Idle mode
- IDN
- IDS
- IE
- IEEE
- IEI
- IESG
- IETF
- IEV
- IFL
- IGMP
- IGP
- IID
- IIS
- IK
- IKE
- ILMI
- IM
- IM CN
- IM-CSI
- IM-SSF
- IMA
- IMAP
- IMAP4
- IMEI
- IMS
- IMSI
- IMSI Attach
- IMT-2000
- IMT-2000 Network Capabilities
- IMT-2000 Service Capabilities
- IMT2000
- IMUN
- IN
- In Band Signalling
- In-market
- INAP
- Inbound Marketing
- Indication
- Industry
- Industry Analysis
- Information Framework
- Infrared
- Initial Ranging
- INMARSAT
- Innovation
- Inquiry
- Insured Burst
- Insured Rate
- Insured Traffic
- Integrity
- INTELSAT
- Inter
- Interactive service
- Interconnect Point
- Interconnection
- Interface
- Interference
- Interleaving
- Intermediary
- Internet
- Internet Telephony
- InterNIC
- Intra
- Intra PLMN handover
- Intra-Cell Handover
- Intranet
- IntServ
- Inventory
- Inventory Turnover
- IOI
- IOV
- IP
- IP Datagram
- IP-CAN
- IPCS
- IPDR
- IPDR Recorder
- IPLMN
- IPSec
- IPT
- IPv6
- IPX
- IRCID
- IrDA
- Iridium
- IRSG
- IRTF
- IS-136
- IS-41
- IS-95
- IS-IS
- ISAKMP
- ISC
- ISDN
- ISI
- ISIM
- ISM
- ISO
- ISOC
- Isochronous user channel
- ISP
- ISUP
- IT
- ITU
- ITU-R
- ITU-T
- Iu Interface
- Iu Protocol
- Iu-CS Interface
- Iu-PS Interface
- Iub Interface
- IUC
- Iur Interface
- IVR
- IWF
- IXP
- J-Carrier
- Jamming
- JANET
- JAVA
- Jitter
- JPEG
- Just in Time
- Justification
- JVM
- K- Key
- Ka Band
- Kbit/s
- KByte/s
- Kc
- KEK
- Key
- Key Distribution
- Key Pair
- Keylogger
- KHz
- Ki
- Kilostream
- KPI
- KPIs
- KSI
- Ku Band
- L-LSP
- L1
- L2
- L2CAP
- L2R BOP
- L2R COP
- L2TP
- L3
- L4
- L5
- L6
- L7
- LA
- Label
- LAC
- LAI
- LAN
- LAND attack
- LANE
- LAPB
- LAPD
- LAPDm
- LASER
- Launch Phase
- LCAF
- LCCF
- LCCTF
- LCD
- LCF
- LCR
- LCS
- LDAP
- LDP
- LE
- Lead Users
- Leaky Feeder
- Leased Line
- LED
- LEO
- LER
- LI
- Liabilities
- LIFO
- Line Code
- Line Extension
- Line Terminating Equipment
- Link Access Control
- Link Budget
- Link Key
- LKL
- LL-PDU
- LM
- LMI
- LMMF
- LMP
- LMU
- Load Balancing
- Local Loop
- Logical Channels
- Logistics
- LOM
- Long Code
- Long Code Mask
- Loopback
- LOS
- Lossy
- Low Pass Filter
- LPC
- LR
- LSA
- LSA Exclusive Access Cell
- LSA Only Access
- LSA Preferential Access Cell
- LSAF
- LSBcF
- LSBF
- LSCF
- LSOF
- LSP
- LSPF
- LSPing
- LSPtrace
- LSR
- LSSU
- LTE
- M-CSI
- M2PA
- M2UA
- M3UA
- MA
- MAC
- MAC Address
- Macro Cell
- Major Decision Point
- Make Versus Buy Analysis
- Malware
- MAM
- MAN
- Manchester Encoding
- MAP
- Mapping
- Market Analysis
- Market Attractiveness
- Market Focus
- Market Penetration
- Market Pricing
- Market Research
- Market Segment
- Market Window
- Marketing Collateral
- Marketing Mix
- Marketing Plan for the Product
- MARS
- Master Clock
- Master Device
- MBMS
- Mbps
- MBS
- MBTI
- MCC
- MCEF
- Mcps
- MCS
- MD
- MD5
- MDF
- MDHO
- MDT
- ME
- Mean Input Power
- Measurement Interval
- Mediation
- MEGACO
- Megastream
- Mentoring
- MEO
- MER
- Message
- Message Switching
- Metrics
- MExE
- MG-CSI
- MGC
- MGCP
- MGW
- MHz
- MIB
- Microcells
- Microwave
- Migration
- MILNET
- MIME
- MIMO
- MIN
- Mini PDU
- Minimum Shift Keying
- MIP+
- MM
- MM1
- MM2
- MM3
- MM4
- MM5
- MM6
- MM7
- MMI
- MMS
- MMS Relay/Server
- MMS UA
- MMSC
- MMSE
- MN
- MNC
- MNRF
- MNRG
- MO
- MO-SMS-CSI
- Mobile IP
- Mobile Network
- Mobile Originated
- Modem
- Module
- Monomode Fibre
- MOP
- Morphological Box
- MOS
- Motivational State
- MP
- MP-BGP
- MP2MP
- MPCI
- MPEG
- MPLS
- MPLS-TE
- MRFC
- MRFP
- MS
- MSA
- MSAN
- MSAP
- MSC
- MSDP
- MSH-NCFG
- MSH-NENT
- MSIN
- MSISDN
- MSK
- MSRN
- MSU
- MT
- MT-SMS-CSI
- MTBF
- MTBO
- MTM
- MTP
- MTP1
- MTP2
- MTP3
- MTP3b
- MTPS
- MTRS
- MTTR
- MTU
- MTX
- mu-law
- Multi mode UE
- Multicast
- Multiframe
- Multimode Fibre
- Multipath
- Multiplex Option
- Multiplex Sublayer
- Multiplexer
- Multiplexing
- MUX
- mVPN
- MWD
- MWI
- N-ISDN
- NA-ESRD
- NA-ESRK
- NAI
- NAICS
- NAK
- NAM
- Name Discovery
- NAP
- NAPCS
- NAPTR
- Narrative
- NAS
- NAT
- NAT-T
- NAV
- NB
- NBAP
- NC0
- NC1
- NC2
- NCC
- NCMS
- NDSS
- NE
- Need
- Need State
- Neighbor Set
- NEP
- Net Income
- Net Worth
- NetBIOS
- Network Performance Parameters
- Network Sniffer
- Networking
- NG mVPN
- NGOSS Architecture
- NGOSS Compliant Product
- NGOSS Compliant Solution
- NGOSS Component
- NGOSS Environment
- NGOSS Framework
- NGOSS Framework Implementation
- NGOSS Framework Service
- NGOSS Framework Service Component
- NGOSS Models
- NGOSS TNA Policy Reference Model
- NGOSS TSA Policy Implementation Model
- NIC
- NID
- NIST
- NLOS
- NLRI
- NM
- NMC
- NML-EML Interface
- NMS
- NMSI
- NMT
- NNI
- No-go
- Node B
- Noise
- Non-Connectable Device
- Non-Discoverable Device
- Non-Network Related Performance Parameters
- Non-profit
- Nonviable
- NP
- NPD
- NPDU
- NPI
- NPP
- NPV
- NRM
- NS
- NSAPI
- NSDU
- NSP
- NT
- NTP
- NTU
- Null Modem
- Null Scan
- Null Traffic Channel Data
- Nyquist Theorem
- O&M
- O-BCSM
- O-CSI
- O-IM-CSI
- OAM
- OBEX
- Object
- Obsolescence
- OCSP
- OFB
- OFDM
- OFDMA
- Off shoring
- OFTEL
- OMA
- OMC
- ONU
- OPC
- OPEX
- Opportunity
- Opportunity Assessment
- Opportunity Statement
- Optical Budget
- Optimisation
- ORB
- Order-to Cash Cycle
- ORF
- Organisational Culture
- OS
- OSA
- OSI
- OSI Reference Model
- OSPF
- OSS
- OTD
- OTI
- Out of Band Signalling
- Out-tasking
- Outbound Marketing
- Outsourcing
- Overhead
- Overlay Network
- P device
- P&L
- P-CCPCH
- P-CSCF
- P-SCH
- P-TMSI
- P-WLAN
- P/F
- PA
- PABX
- PACA Call
- PACCH
- Packet
- Packet Error Ratio
- Packet Filter Identifier
- Packet Filtering
- Packet Flow Identity
- Packet Idle Mode
- Packet mode
- Packet System Information
- PAD
- PAGCH
- Page State
- Paging
- Paired
- Pairing
- Pairwise
- PAM
- PAN
- PAP
- Parameter Change Registration
- Park Mode
- Passive Reconnaissance
- Passkey
- PAT
- Path Loss
- Payback Period
- Payload
- PBCCH
- PC
- PCC
- PCCCH
- PCCH
- PCE
- PCEP
- PCF
- PCH
- PCM
- PCMCIA
- PCN
- PCPCH
- PCR
- PCS
- PCU
- PDA
- PDCH
- PDCP
- PDD
- PDG
- PDH
- PDMA
- PDN
- PDP Address
- PDP Context
- PDP Type
- PDS
- PDSN
- PDTCH
- PDU
- PE
- PE device
- PEL
- PEM
- Penalty_Time
- Penetration
- Penetration Tester
- Perl
- Persona
- PERT
- PF
- PF-DB
- PFC
- PFS
- PG
- PGP
- Phase Gate Process
- PHB
- Phishing
- Photonics
- PHP
- PHS
- PHSF
- PHSI
- PHSS
- Physical Channel
- Physical Link
- PIA
- PIC
- Pico Cell
- Piconet
- PIFS
- Pilot
- Pilot Beacon
- Pilot Channel
- Pilot PN Chip
- Pilot PN Sequence
- Pilot PN Sequence Offset
- Pilot PN Sequence Offset Index
- Pilot Strength
- PIM
- PIN
- PING
- Ping of Death
- Pitch
- PKCS
- PKCS 1
- PKCS 10
- PKCS 11
- PKCS 12
- PKCS 15
- PKCS 7
- PKCS 8
- PKE
- PKI
- PKIX
- PKM
- Plaintext
- Plant and Equipment
- Platform
- PLL
- PLMN
- PLPM
- PLR
- PMBOK
- PMC
- PMI
- PMIP
- PMK
- PMO
- PMR
- PMSI
- PM_ADDR
- PN
- PN Chip
- PNCH
- PNNI
- PNP
- PoA
- POC
- POC Client
- POC Server
- Point-to-Multipoint
- Point-to-Point
- Policy
- POP
- Port Number
- Port Scanner
- Positioning Calculation Function
- Positioning Statement
- Post Office Protocol
- Post-Launch Audit
- POTS
- Power Control Bit
- Power Up Registration
- PP VPN
- PPCH
- PPP
- PPTP
- PRACH
- PRAF
- PRCF
- PRD
- Precedence
- Presence Server
- PRESTO
- PRI
- Price
- Primary CDMA Channel
- Primitive
- Private Key
- PRN (Provide Roaming Number)
- Proactive SIM
- Product
- Product Architecture
- Product as a Business
- Product Availability Rating
- Product Champion
- Product Customisation
- Product Discontinuation
- Product Element
- Product Life Cycle
- Product Line
- Product Management Life Cycle Model
- Product Manager and/or Product Line Manager
- Product Master Plan
- Product Mix
- Product Portfolio
- Product Positioning
- Product Project
- Product Scorecard
- Program Management
- Project
- Project Management
- Promotion
- Propagation Delay
- Protection Switching
- Protocol
- Protocol Stack
- Provide Subscriber Information
- PS
- PS-Code
- PSD
- PSK
- PSMF
- PSTN
- PTCCH
- PTN
- PTT
- Public Key
- PUF
- PUSC
- PUSCH
- Push Back
- PVC
- PWE
- PZID
- QA
- QAM
- QAP
- QBSS
- QDU
- Qhcs
- Qhyst
- QIB
- Qmap
- Qoffset
- QoS
- QoS Negotiated
- Qos Profile
- QoS Requested
- QoS Session
- QoS Subscribed
- QPCH
- QPSK
- Qqualmeas
- Qqualmin
- Qrxlevmin
- QSIG
- QSTA
- Quantization
- Quantization level
- Quantization noise
- Quick Paging
- Quick Paging Channel Slot
- Quick Repeats
- R
- R Reference Point
- R&D
- R-CSCH
- R-DSCH
- R-UIM
- R2MFC
- RA
- RAB
- RAC
- RACH
- RACI
- Radio Access Mode
- Radio Block
- Radio Configuration Class
- Radio frame
- Radio Interface
- Radio link
- Radio link addition
- Radio link removal
- Radio Spectrum
- RADIUS
- RAI
- Rake Receiver
- RAM
- RAN
- RANAP
- RAND
- RANDBS
- RANDC
- RANDU
- Ranging
- RARP
- RAT
- Rate Adaptation
- Rate centre
- Rate matching
- Rational Ignorance
- Rationalising
- RAU
- Rayleigh Fading
- Rayleigh Scattering
- RB
- RBOC
- RBSN
- RC
- RC4
- RC5
- RC6
- RCF
- RD
- RDBMS
- RDM
- Re-strategising
- Ready State
- Reassociation
- Received Signal Code Power
- Received Total Wide Band Power
- Receiver Antenna Gain
- Receiver Noise Figure
- Receiver Sensitivity (dBm)
- Redundancy
- Redundancy check
- Refarming
- Reference point
- Reflection
- Refractive index
- Regeneration
- Registration
- Registration Area
- Registration Zone
- Regular PDU
- Regulatory Requirements
- Reinwardtia
- Relay
- Release
- Reliability
- Remaining Set
- Remote access
- Repeater
- Replay Attack
- Requested QoS
- Required Eb/(No+Io)
- RER
- Reseller
- Reservation Access Mode
- Residual error rate
- Retrofit
- Revenue
- Reverse CDMA Channel
- Reverse Common Control Channel
- Reverse Dedicated Control Channel
- Reverse Fundamental Channel
- Reverse Pilot Channel
- Reverse Power Control Subchannel
- Reverse Shell
- Reverse Supplemental Channel
- Reverse Supplemental Code Channel
- Reverse Traffic Channel
- RF
- RFC
- RFCOMM
- RFCOMM Client
- RFCOMM initiator
- RFCOMM Server
- RFE
- RFP
- RI
- Rijndael
- RIP
- RIPv2
- RISC
- Risk
- Risk Mitigation
- RJ
- RLC
- RLL
- RLP
- RNC
- RNS
- RNSAP
- RNTI
- RO
- ROADS
- Roamer
- Roaming
- ROI
- Role-Playing
- ROM
- Rootkit
- ROSE
- Router
- RP
- RPE-LTP
- RPR
- RPT
- RR
- RRBP
- RRC
- RRC Connection
- RRM
- RSA
- RSL
- RSQI
- RSSI
- RSTP
- RSVP
- RT
- RT-VR
- RTCP
- RTD
- RTF
- RTG
- RTI
- RTP
- RTS
- RTSP
- Rural Service Area
- RX
- RXLEV
- RXQUAL
- S
- S Des
- S interface
- S-APSD
- S-Band
- S-CCPCH
- S-CSCF
- S-RNTI
- S-SCH
- S-VLAN
- S/MIME
- S/P
- SA
- SAAL
- SABM
- SAC
- SACCH
- SACK
- SAFI
- SAI
- Salt
- SAM
- SAM database
- Sampling rate
- SAP
- SAPI
- SAR
- SAT
- SatCom
- Satellite
- Satellite phone
- SB
- SBC
- SBLP
- Scalability
- Scattering
- Scattering loss
- Scatternet
- SCCP
- SCE
- SCEF
- Scenario
- SCEP
- SCF
- SCFE
- SCH Channel
- SCID
- SCM
- SCO
- Scope
- Scope Creep
- SCP
- Script Kiddies
- SCS
- SCSI
- SCTP
- SDAP
- SDCCH
- SDF
- SDH
- SDL
- SDP
- SDPng
- SDSL
- SDU
- SE
- Seamless handover
- Search Engine
- Search Window
- Search Window Offset
- Secondary CDMA Channel
- Secondary Traffic
- Sector
- Security
- Security Code
- Security Token
- SEGW
- Selective Call Barring
- Semiduplex operation
- Sensitivity Analysis
- Sequence Numbers
- Serial Number
- Serial Port
- Series A
- Series B
- Series C
- Series D
- Series E
- Series F
- Series G
- Series H
- Series I
- Series J
- Series K
- Series L
- Series M
- Series N
- Series O
- Series P
- Series Q
- Series R
- Series S
- Series T
- Series U
- Series V
- Series X
- Series Z
- Server
- Service Agreement
- Service Configuration
- Service Discovery
- Service Flow
- Service Instance
- Service Negotiation
- Service Option
- Service Option Connection
- Service Option Connection Reference
- Service Option Negotiation
- Service Provider
- Service Provider Network
- Service Redirection
- Service-Based Business
- Services
- Serving Frequency
- Serving Network
- Session Description Protocol
- Session Hijacking
- Session Replay
- SF
- SFA
- SFH
- SFM
- SFN
- SG
- SGML
- SGSN
- SGW
- SHA-1
- Shannon's law
- Shared Secret
- Shareware
- SHCCH
- Shelf Space
- Shellcode
- SHF
- SHO
- SI
- SIB
- SID
- SIF
- SIFS
- SigComp
- Signal processing gain
- Signaling Connection
- Signaling Traffic
- Signalling
- SIGTRAN
- Silence Descriptor
- SIM
- SIM lock
- Simplex
- Simulcast
- SIO
- SIP
- SIP-T
- SIPPING
- SIPs
- SIR
- SKUs
- Sky wave
- SL
- SLA
- Slave Device
- SLC
- Sleep mode
- SLIP
- Slotted Mode
- SLR
- SLS
- SM
- Smart antenna
- Smart card
- SMDS
- SME
- SMF
- SMG
- SMH
- SMLC
- SMP
- SMpSDU
- SMS
- SMSC
- SMTP
- Smurf Attack
- SN
- SNA
- SNDCP
- Sniff Mode
- SNM
- SNMP
- SNR
- SO
- Social Engineering
- Socialise
- SOCKS
- Soft Handover
- Soft key
- Soft Phone
- SOHO
- SoLSA
- Solution
- SONET
- Source Base Station
- Sourcing
- SP
- Space diversity
- SPC
- Spectral density
- Spectrum assignment
- Speech Power
- Speech synthesizer
- SPF
- SPI
- SPNP
- Spread spectrum
- Spreading Rate
- SPT
- Spurious emission
- SQL
- SR
- SR1
- SR3
- SR3 Frequencies
- SRB
- SRES
- SRF
- SRI
- SRLG
- SRNC
- SRNS
- SRNS Relocation
- SRS
- SS
- SS-CSI
- SS7
- SSCF
- SSCOP
- SSD
- SSDT
- SSF
- SSID
- SSL
- SSN
- SSP
- SSRC
- ST
- Stack Smashing
- Stakeholders
- Standby State
- Standby Time
- Standing wave
- Star topology
- Station
- STC
- STM
- STM-1
- Stock-Out
- Store-and-forward
- Storytelling
- STP
- Strategic Mix
- Strategy
- Stream Cipher
- Strengths
- STS
- SUA
- Sub team
- Sub-Function
- Sub-Phases
- Sub-Segments
- Subassembly
- Sublayer
- Subnet address
- Subscribed QoS
- Subscriber
- Superframe
- Supplemental Channel
- Supplemental Code Channel
- Suppliers
- Supply Chain
- Surface wave
- SVC
- SwMI
- SWOT
- Symmetric Cryptography
- Symmetric Key
- SYN Flood
- Sync Channel
- Sync Channel Superframe
- Synchronization
- Synchronization Code
- Synchronous Transmission
- Synergy
- System
- System Area
- T Interface
- T-BCSM
- T-CSI
- TA
- TAC
- TACS
- Tactic
- TAI
- TALI
- Talktime
- TAM
- TAP3
- Target Base Station
- Target Customer
- Tariff
- TB
- TBCP
- TBF
- TBS
- TCAP
- TCH/F
- TCLAS
- TCP
- TCP/IP
- TCS
- TCTF
- TD-CDMA
- TDD
- TDM
- TDMA
- TE
- TE LSP Segment
- TE-LSP
- Team Sizing
- Technical Specification
- TED
- TEI
- TEID
- TEK
- Telecommunication
- Telecommunication service
- Telecommunications network
- Telecommunications service
- Teleconference
- Telemetry
- Telephone
- Telephone number
- Telephony
- Teleservice
- Telnet
- TEMPORARY_OFFSET
- Terabyte
- Terminal portability
- Terrestrial Radio Communication
- TETRA
- TFC
- TFCI
- TFCS
- TFI
- TFO
- TFS
- TFT
- TFTP
- Thermal noise
- Thermal radiation
- THF
- Third Generation
- THO
- Threats
- Throughput
- THz
- TI
- TIA
- TID
- TIF-CSI
- Time diversity
- Timer Based Registration
- Timing Advance
- Timing Offset
- TIPHON
- TKIP
- TLLI
- TLS
- TLV
- TM
- TME
- TMN
- TMSI
- TMSI Zone
- TOA
- Token Ring
- Toll office
- Toll quality
- Topology Hiding Inter-working Gateway
- ToS
- TPC
- Traceability
- Trade-Offs
- Traffic
- Traffic capacity
- Traffic Channel
- Traffic Class
- Transceiver
- Transcoder
- Transcoding
- Transit Exchange
- Transmission
- Transmission line
- Transmission loss
- Transmission medium
- Transmitted code power
- Transparent
- Transport Block Set Size
- Transport Block Size
- Transport Channels
- Transport Connection
- Transport Format
- TRAU
- Treselections
- TrFO
- Triband
- Tributary office
- TrM
- Trojan Horse
- Troposphere
- Tropospheric scatter
- TRS
- Trunk
- TS
- TSC
- TSL
- Tsp
- TSPEC
- TTA
- TTG
- TTI
- TTL
- Tunnelling
- TUP
- Turbo Code
- Turnover
- TX
- TXOP
- Type field
- U-APSD
- U-CSI
- U-Interface
- U-RNTI
- U/L
- UA
- UA Channel
- UAC
- UAN
- UARFCN
- UCD
- UDI
- UDP
- UDT
- UDTS
- UE
- UG-CSI
- UGS
- UHF
- UI
- UI Channel
- UIM
- UIUC
- UL-MAP
- ULF
- Um
- UMA
- UMAN
- UMD
- UMTS
- Unassured Mode
- Unbalanced line
- UNC
- UNI
- Unicode
- Unidirectional channel
- Unified Messaging
- Unique Challenge Response Procedure
- UNIX
- Unnumbered command
- Unnumbered response
- Upgrade
- Uplink
- Uplink DPCH
- UPnP
- Upper Layers
- Upsell
- Upside Potential
- Upstream
- UPT
- URA
- URI
- URL
- URLC
- URR
- US Channel
- US-TDMA
- USAT
- USB
- USCH
- User
- User information
- User Zone
- User Zone Registration
- USF
- USIM
- USP
- USSD
- USTS
- UT
- UTP
- UTRA
- UTRAN
- Uu
- UUS
- UWC-136
- UWCC
- V reference point
- V-NSP
- VAD
- Value Added
- Value Proposition
- VAN
- VAS
- VBR
- VBS
- VC
- VCC
- VCCV
- VCI
- VCL
- VDSL
- VDSL2
- VE ID
- Verisign
- Version Control
- Vertical Markets
- VF
- VGCS
- VHDSL
- VHE
- VHF
- VID
- Videophone
- Virus
- Vision
- VLAN
- VLF
- VLR
- VMSC
- VoB
- VOC
- Vocoder
- VoD
- VoDSL
- Voice memo
- Voice Privacy
- Voicemail
- VoIP
- Volume
- VP
- VPC
- VPI
- VPLMN
- VPLS
- VPN
- VRF
- VSWR
- VT-CSI
- VT-IM-CSI
- Vulnerabilities
- Vulnerability Scanner
- W-AMR
- WAE
- WAEPL
- WAG
- Walk-Through
- WAN
- WAP
- WAP Gateway
- Warchalking
- Wardriving
- Warranty
- Waveguide
- Wavelength
- WBS
- WCDMA
- WDM
- WDP
- Weaknesses
- Web server
- WECA
- WEP
- White-Box (testing)
- WHOIS
- Wi-Fi Alliance
- Wideband
- Wideband Noise
- WiFi
- WiFi Zone
- Wild Card APN
- WiMAX
- Win-Loss Audit
- Wireless Network
- WISP
- WLAN
- WLL
- WML
- WN
- Work Flow
- Work Structure
- Working Capital
- Worm
- Worst-Case Scenario
- WPA
- WRC
- Write-Offs
- WSP
- WTLS
- WTP
- WWW
- X-Modem
- X.25
- X.400
- X.500
- X.509
- XCAP
- xDSL
- XML
- Xon/Xoff
- XRES
- Y-Modem
- Yagi
- Yahoo
- Z
- Z-Modem
- Zero-bit insertion
- zip
- Zombie
- Zone Timer
