AMPS was originally standardized by ANSI as EIA / TIA / IS-3.

* Telecom 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.

At approximately 7: 15 on March 31, 2007 the AMPS / TDMA network ceased to function.

The service was discontinued in conjunction with the retirement of the parent AMPS service ; it has been functionally replaced by faster services such as 1xRTT, EV-DO, and UMTS / HSPA.

Digital Ocean, Inc. an OEM licensee of the Apple Newton, offered the Seahorse product, which integrated the Newton handheld computer, an AMPS / CDPD handset / modem along with a web browser in 1996, winning the CTIA's hardware product of the year award as a smartphone, arguably the world's first.

The usage by a subscriber in a visited network is captured in a file called the TAP ( Transferred Account Procedure ) for GSM / CIBER ( Cellular Intercarrier Billing Exchange Record ) for CDMA, AMPS etc ... file and is transferred to the home network.

These are available in Code Division Multiple Access ( CDMA ), Digital Enhanced Cordless Telecommunications – DECT ( TDMA / DCA ) ( See ETSI 6 EN 300 765-1 V1. 3. 1 ( 2001-04 ) -" Digital Enhanced Cordless Telecommunications ( DECT ); Radio in the Local Loop ( RLL ) Access Profile ( RAP ); Part 1: Basic telephony services "), Global System for Mobile Communications ( GSM ), IS136 Time Division Multiple Access ( TDMA ) as well as analog access technologies such as Advanced Mobile Phone System ( AMPS ), for which there will be independent standards defining every aspect of modulation, protocols, error handling, etc.

Telecom originally operated a TDMA ( AMPS, Digital D-AMPS / TDMA ) mobile network ; this was superseded by its CDMA network.

Some current and historical reuse patterns are 3 / 7 ( North American AMPS ), 6 / 4 ( Motorola NAMPS ), and 3 / 4 ( GSM ).

VimpelCom was founded in 1992 and initially operated AMPS / D-AMPS network in Moscow area.

The network started as AMPS / NAMPS in the 850 MHz band.

Most of its network was initially IS-95 / cdmaOne based, although there were parts of it that were still analog AMPS and parts ( resulting from acquisition of other companies ) using TDMA ( IS-136 ).

* Nokia 3205-Operates on CDMA 800 / 1900 and AMPS 800 with CDMA2000 1xRTT technology.

The company operates AMPS and IS-136 networks on the 800 / 850 MHz band and a GSM network on the 1800 MHz ( DCS ) band in its licensed coverage area, the state of Minas Gerais.

Some multi-mode phones can operate on analog networks as well ( for example, dual band, tri-mode: AMPS 800 / CDMA 800 / CDMA 1900 ).

When talking about IS-95 / GSM multi-mode phones, for example, or AMPS / IS-95 phones, the base band processing is very different from system to system.

* Digital AMPS ( IS-54 and IS-136 ), a 2G mobile-phone standard that uses Time division multiple access

IS-54 and IS-136 are second-generation ( 2G ) mobile phone systems, known as Digital AMPS ( D-AMPS ).

IS-54 maintains compatibility with Advanced Mobile Phone System ( AMPS ) in many ways.

IS-54 was, in fact, backward compatible with analog cellular and indeed co-exists on the same radio channels as AMPS.

IS-54 employs the same 30 kHz channel spacing and frequency bands ( 824-849 and 869-894 MHz ) as AMPS.

The IS-54 standard specifies 84 control channels, 42 of which are shared with AMPS.

To maintain compatibility with the existing AMPS cellular telephone system, the primary forward and reverse control channels in IS-54 cellular systems use the same signaling techniques and modulation scheme ( binary FSK ) as AMPS.

Phones compliant with the GAIT standard can operate on either contemporary GSM networks, or the legacy IS-136 TDMA and AMPS networks found extensively throughout North America.

As of February 18, 2008, carriers in the United States were no longer required to support AMPS and companies such as AT & T and Verizon have discontinued this service permanently.

In 2002, the FCC decided to no longer require A and B carriers to support AMPS service as of February 18, 2008.

Since then, support for the service has expanded to include other mobile technologies such as ANSI CDMA networks and Digital AMPS, as well as satellite and Landline networks.

Following both events, Telus began a slow phasing out of CDMA devices, especially those that support both AMPS and CDMA technologies.

AMPS pioneers fathered the term " cellular " because of its use of small hexagonal " cells " within a system.

After that point, however, most cellular companies were eager to shut down AMPS and use the remaining channels for digital services.

The station moved from channel 79 to channel 57 on July 1, 1983, because of complaints that it was interfering with mobile radio in the Toronto area, and so that the frequencies used by channels 70 to 83 could be reclaimed for use by new AMPS mobile phones as a result of a CCIR international convention in 1982.

They are externally similar to the 3310 and 3390, but use Digital AMPS (" TDMA ")/ AMPS technology rather than GSM.

This trial system was licensed by the FCC to ATT for commercial use in 1982 and, as part of the divestiture arrangements for the breakup of ATT, the AMPS technology was distributed to local telcos.

A GAIT-compliant mobile phone typically accepts a SIM card, similar to a standard GSM phone ; however, depending on the wireless provider, the SIM card enables access not only to that wireless provider's GSM network, but also enables use of the telephone on any TDMA or AMPS networks run by the wireless provider.

However, reducing interference is a significant component in how GSM and other TDMA based mobile phone systems make better use of the available spectrum compared to older analog systems such as AMPS and NMT.

Because of the wide base of older technologies like TDMA and AMPS they are still in use.

AMPS and D-AMPS have now been phased out in favor of either CDMA2000 or GSM which allow for higher capacity data transfers for services such as WAP, Multimedia Messaging System ( MMS ), and wireless Internet access.

Advanced Mobile Phone System ( AMPS ) is an analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas in 1978, Israel in 1986, and Australia in 1987.

Laws were passed in the US which prohibited the FCC type acceptance and sale of any receiver which could tune the frequency ranges occupied by analog AMPS cellular services.

In 2006, ADT asked the FCC to extend the AMPS deadline due to many of their alarm systems still using analog technology to communicate with the control centers.

* 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.

Telecommunications in Cuba consists mainly of NTSC analog television, analog radio, telephony, AMPS, D-AMPS, and GSM mobile telephony, and the Internet.

D-AMPS uses existing AMPS channels and allows for smooth transition between digital and analog systems in the same area.

Developed by Bell Labs in the 1970s and first used commercially in the United States in 1983, AMPS operates in the 800 MHz band in the United States and is the most widely distributed analog cellular standard.

This standard won over Motorola's Narrowband AMPS or N-AMPS, an analog scheme that increased capacity by cutting down voice channels from 30 kHz to 10 kHz.

* 1990: analog AMPS was superseded by Digital AMPS.

typically used the Mobile Telephone Service ( MTS ), which was first used in St. Louis, or Improved Mobile Telephone Service ( IMTS ) before giving way to analog cellular service ( AMPS ) in 1984.

The first-generation systems started in 1979 with Japan, are all analog and include AMPS and NMT.

With the removal of analog network cells nearly all over the world, the DynaTAC models running on AMPS or other analog networks are mostly obsolete.

Native Alltel markets consisted of both analog ( AMPS ) and digital ( CDMA ) technologies.

Telus Mobility discontinued its AMPS analog network in February 2008, and launched its HSPA + network in November 2009.

Due to the age and security problems of this technology, Telus Mobility discontinued its AMPS analog mobile network in 2008.

), except the voice channel was analog ( as was the original NMT and AMPS cellular systems ).