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Telocator Alphanumeric Protocol

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1985 MetroMedia IXO Device

Telocator Alphanumeric Protocol (TAP) is a protocol for submitting requests to a cellular or pager service as a numeric or alphanumeric message.[1]

This protocol is used to send SMS/text alerts to a cell phone or a pager.[2]

TAP, initially known as Motorola Page Entry (PET) was adopted in September 1988, by the Personal Communication Industry Association. TAP defines an industry standard for sending alphanumeric messages to pagers.[3]

TAP was also known as IXO protocol.[4] Originally, devices like the IXO Device were used to send Alphanumeric Pages using TAP. Later, Motorola would create a similar device called the AlphaMate.

TAP Communication Protocol

The standard protocol is ASCII with XON/XOFF flow control, using a 10-bit code (1 start bit, 7 data bits, even parity, 1 stop bit). No echo shall be employed in full duplex mode.[5]

See also

References