Telocator Alphanumeric input Protocol was also known as PET and IXO protocol.http://www.tap-ixo.info/ This protocol was used for sending one way alphanumeric pages. Originally, devices like the IXO Device (right) were used to send Alphanumeric Pages using TAP. Later, Motorola

Motorola

Motorola, Inc. was an American multinational telecommunications company based in Schaumburg, Illinois, which was eventually divided into two independent public companies, Motorola Mobility and Motorola Solutions on January 4, 2011, after losing $4.3 billion from 2007 to 2009...

 would create a similar device called the AlphaMate. TAP Protocol is still used today in the still existing one way paging customer base and also to send one way messages to cellphones. In 1996, RAM Mobile Data

RAM Mobile Data

RAM Mobile Data was originally founded by RAM Broadcasting Corporation as American Mobile Data Communications, Inc. in 1988. The name of the company was changed to RAM Mobile Data in 1989. RAM Mobile Data was the U.S...

 introduced extensions to TAP for two way paging over the Mobitex

Mobitex

Mobitex is an OSI based open standard, national public access wireless packet-switched data network. Mobitex puts great emphasis on safety and reliability with its use by military, police, firefighters and ambulance services. Mobitex was developed in the beginning of the 1980s by the Swedish...

network.