Total Access Communication System

related topics
{system, computer, user}
{country, population, people}
{mi², represent, 1st}
{rate, high, increase}

Total Access Communication System (TACS) and ETACS are mostly-obsolete variants of AMPS which were used in some European countries (including the UK & Ireland in 1983). TACS was also used in Japan under the name Japanese Total Access Communication (JTAC).[1][1][2][2] It was also used in Hong Kong.[3] ETACS was an extended version of TACS with more channels.

TACS and ETACS are now obsolete in Europe, having been replaced by the GSM system. In the United Kingdom, the last ETACS service operated by Vodafone was discontinued on 31 May 2001, after sixteen years of service. The competing service in the UK operated by Cellnet (latterly BTCellnet) was closed on Sunday 1st October 2000. ETACS is however still in use in a handful of countries elsewhere in the world. NMT is another analog cellular standard that was widely used in Europe, mainly in the Nordic countries, which has now been fully replaced by GSM except for limited use in rural areas due to its superior range.

Frequency bands used by ETACS in the UK


UK ETACS and USA AMPS compared


BT Engineering Journal Vol 4 July 1985

Smith Myers ART 775 User Manual

Full article ▸

related documents
Intel 80188
Intel 80486SX
Frame synchronization
IBM 801
Isochronous burst transmission
Common management information service
Demon dialing
Symmetric Digital Subscriber Line
Commodore 1570
Freescale 68HC11
Supervisory program
Private line
End-to-end connectivity
Raster graphics
MOS Technology 6507
Voice operated switch
Intel 80486DX4
Badtrans (computer worm)
Memory hierarchy
Amiga 2000
Backward channel