<Li> Moviline (Telefónica Servicios Uno since 1971, Moviline since 1994) was the analogue service provider for the Spanish operator . Moviline has operated an ETACS 900 (mHz) network in Spain . Since 31 December 2003, the system has been closed to new users, at that time, it covered 100% of the Spanish population, but now some antennas have been given to GSM operators . The Moviline brand has been completely replaced by Movistar, the digital brand of Telefónica, since 1992 . The network was completely converted to GSM and its in all Spanish territory . Movistar have a 3G network with Universal Mobile Telecommunications System (UMTS) technology, and offer services over GSM in places without 3G coverage . </Li> <Li> AT&T Mobility - In areas where AT&T Mobility previously had D - AMPS operating on 1900 MHz frequencies, no analog AMPS network existed, and the D - AMPS network on the 1900 MHz frequency was shut down in mid-2007 . Service on the remaining 850 MHz AMPS markets was discontinued along with 850 MHz D - AMPS service on February 18, 2008, except in areas where service was provided by Dobson Communications . The Dobson AMPS and TDMA networks were shut down on March 1, 2008 . </Li> <Li> Telecom New Zealand (now Spark New Zealand) - operated an AMPS / TDMA network in New Zealand from 1987 until 2007 throughout the whole country and the network was renowned for its superb coverage, In 2000 Telecom announced that they would discontinue the AMPS network within 5 years (2005) to give customers an opportunity to transition to the CDMA2000 and later 1XRTT technologies that replaced it . They later extended that deadline until 6PM 31 March 2007 . At approximately 7: 15 on March 31, 2007 the AMPS / TDMA network ceased to function . </Li> <Li> Telstra (formerly Telecom Australia) - operated an AMPS network in Australia from February 1987 until the end of 2000 . As part of the introduction of mobile phone competition in Australia, the Australian government mandated GSM as the new standard for mobile networks, and required that Telstra close the AMPS network by 2000 . However, GSM base stations could only serve a limited area . While this was OK for Europe, it meant that GSM could not cover large, sparsely populated rural areas of Australia cost effectively . Telstra deployed a CDMA network, which did not suffer this limitation, and while the AMPS network was closed down at the end of 1999 in the major cities, the closure deadline was extended until the end of 2000 in rural areas to ease the transition to CDMA . The CDMA network has since been replaced by an 850 MHz UMTS network, Next G . </Li>

Distinguish amps and etacs system in mobile communications