TACS - Total Access Communications System
TAP - Transferred Account Procedure
(the essential charging methodology for international GSM roaming. There have been four TAP standards, TAP1, TAP2, TAP2+ and TAP3. The latter offers variable record length and is sufficiently flexible to support all future requirements arising from the move to 3G)
TBR - Technical Basis for Regulation (part of the ETSI standardisation process)
TCH - Traffic Channel
TD-CDMA - Time Division CDMA
TD-SCDMA - Time Division-Synchronous CDMA
( a CDMA variant developed by Chinese vendors which is claimed to offer high data rates and greater coverage)
TDD - Time Division Duplex
( a radio technology for use in unpaired spectrum. WCDMA/UMTS includes a band for TDD mode usage and both PHS and DECT use this technology)
TDMA - Time Division Multiple Access
( a technique for multiplexing multiple users onto a single channel on a single carrier by splitting the carrier into time slots and allocating these on a as-needed basis)
Telematics:
A wireless communications system designed for the collection and dissemination of information, particularly refers to vehicle-based electronic systems, vehicle tracking and positioning, on-line vehicle navigation and information systems and emergency assistance
TETRA: - Terrestrial Trunked Radio
a European developed digital private mobile radio technology which is now being extensively deployed worldwide
Tetrapol:
A competitive digital PMR technology to TETRA developed by French vendors
TFTS - Terrestrial Flight Telephone System
TFD : Thin Film Diode
(a type of LCD (Liquid Crystal Display) flat-panel display technology. TFD technology combines the excellent image quality and fast response times of TFT, with the low power consumption and low cost of STN.)
TFT - Thin Film Transistor
(an LCD technology that uses transistors to precisely control the voltage to each liquid crystal cell. This is also referred to as an “active matrix” display. TFT screens offer the best image quality and refresh rates, but at a higher cost.)
Timeslot:
A frame within a TDMA schem; has a time interval of 576 microseconds. Physical content of a timeslot is known as a burst. Five different burst types exist, they are distinguished by different TDMA frame divisions (see NB, FB, SB, AB and DB)
TIPHON - Telecommunications and Internet Protocol Harmonisation over Networks
an ETSI project designed to support the market for voice communications and voice band communications. In particular TIPHON will ensure that users on IP-based networks can communicate with those on circuit switched networks
TMN - Telecommunications Management Network
TMSI - Temporary Mobile Subscriber Identity
(covers the IMSI to prevent over-the-air interception )and tracing
TRAI- Telecom Regulatoy Authority of India
TRAU - Transcoder Rate Adapter Unit
Tri-band:
Refers to a mobile phone able to operate on the three internationally designated GSM frequencies- 900, 1800 and 1900MHz
TrueSync:
A technology which enables the optimal synchronisation of calendars, address books, action lists and memoranda. It enables multi-point, one-step synchronisation of wireless and wireline devices, desktop computers and server-based applications and services
TRX:
Transmitter/receiver (transceiver)
Total Access Communications System (an AMPS variant deployed in a number of countries principally the UK)
Talk-time:
The length of time a battery can power a mobile phone when making or receiving calls
T9 :
software built into some wireless phones and PDAs that makes typing words on a keypad easier. The competitor to T9 is iTAP
Tri-Band fone:
a phone capable of operating on three different digital frequencies (example: 900MHz, 1800MHz and 1900MHz).
TAP - Transferred Account Procedure
(the essential charging methodology for international GSM roaming. There have been four TAP standards, TAP1, TAP2, TAP2+ and TAP3. The latter offers variable record length and is sufficiently flexible to support all future requirements arising from the move to 3G)
TBR - Technical Basis for Regulation (part of the ETSI standardisation process)
TCH - Traffic Channel
TD-CDMA - Time Division CDMA
TD-SCDMA - Time Division-Synchronous CDMA
( a CDMA variant developed by Chinese vendors which is claimed to offer high data rates and greater coverage)
TDD - Time Division Duplex
( a radio technology for use in unpaired spectrum. WCDMA/UMTS includes a band for TDD mode usage and both PHS and DECT use this technology)
TDMA - Time Division Multiple Access
( a technique for multiplexing multiple users onto a single channel on a single carrier by splitting the carrier into time slots and allocating these on a as-needed basis)
Telematics:
A wireless communications system designed for the collection and dissemination of information, particularly refers to vehicle-based electronic systems, vehicle tracking and positioning, on-line vehicle navigation and information systems and emergency assistance
TETRA: - Terrestrial Trunked Radio
a European developed digital private mobile radio technology which is now being extensively deployed worldwide
Tetrapol:
A competitive digital PMR technology to TETRA developed by French vendors
TFTS - Terrestrial Flight Telephone System
TFD : Thin Film Diode
(a type of LCD (Liquid Crystal Display) flat-panel display technology. TFD technology combines the excellent image quality and fast response times of TFT, with the low power consumption and low cost of STN.)
TFT - Thin Film Transistor
(an LCD technology that uses transistors to precisely control the voltage to each liquid crystal cell. This is also referred to as an “active matrix” display. TFT screens offer the best image quality and refresh rates, but at a higher cost.)
Timeslot:
A frame within a TDMA schem; has a time interval of 576 microseconds. Physical content of a timeslot is known as a burst. Five different burst types exist, they are distinguished by different TDMA frame divisions (see NB, FB, SB, AB and DB)
TIPHON - Telecommunications and Internet Protocol Harmonisation over Networks
an ETSI project designed to support the market for voice communications and voice band communications. In particular TIPHON will ensure that users on IP-based networks can communicate with those on circuit switched networks
TMN - Telecommunications Management Network
TMSI - Temporary Mobile Subscriber Identity
(covers the IMSI to prevent over-the-air interception )and tracing
TRAI- Telecom Regulatoy Authority of India
TRAU - Transcoder Rate Adapter Unit
Tri-band:
Refers to a mobile phone able to operate on the three internationally designated GSM frequencies- 900, 1800 and 1900MHz
TrueSync:
A technology which enables the optimal synchronisation of calendars, address books, action lists and memoranda. It enables multi-point, one-step synchronisation of wireless and wireline devices, desktop computers and server-based applications and services
TRX:
Transmitter/receiver (transceiver)
Total Access Communications System (an AMPS variant deployed in a number of countries principally the UK)
Talk-time:
The length of time a battery can power a mobile phone when making or receiving calls
T9 :
software built into some wireless phones and PDAs that makes typing words on a keypad easier. The competitor to T9 is iTAP
Tri-Band fone:
a phone capable of operating on three different digital frequencies (example: 900MHz, 1800MHz and 1900MHz).