FLEX is a communication protocol developed by Motorola and used in many pagers. FLEX provides one-way communication only (from the provider to the pager device), but a related protocol called ReFLEX provides two-way messaging. Motorola (NYSE: MOT) is an international communications company based in Schaumburg, Illinois, a Chicago suburb. ... It has been suggested that this article or section be merged with Paging (telecommunications). ... A reflex action or reflex is a biological control system linking stimulus to response and mediated by a reflex arc. ...

Transmission is at 1600, 3200 or 6400 bits per second using FSK modulation. At 1600 this is on a 2 level FSK signal. The 3200 and 6400 have a symbol rate that is half of the bit rate and use a 4 level FSK signal. In communications, transmission is the act of transmitting electrical messages (and the associated phenonomena of radiant energy that pass through media). ... This article or section is in need of attention from an expert on the subject. ... Modulation is the process of varying a carrier signal, typically a sinusoidal signal, in order to use that signal to convey information. ... This article or section is in need of attention from an expert on the subject. ... This article or section is in need of attention from an expert on the subject. ...

Data is transmitted in a set of 128 frames that takes 4 minutes to complete. Each frame contains a sync followed by 10 data blocks. The data blocks contain 256, 512 or 1024 bits for 1600, 3200 or 6400 bits per second respectively. In communications and information processing, a transmitter (sometimes abbreviated XMTR) is an object (source) which sends information to an observer (receiver). ... This article is about the unit of information. ... In telecommunications and computing, bit rate (sometimes written bitrate) is the frequency at which bits are passing a given (physical or metaphorical) point. It is quantified using the bit per second (bit/s) unit. ...

A BCH type ECC is used to improve the integrity of the data. The standard has been designed to allow the pager's receiver to be turned off for a high percentage of the time and therefore save on battery usage. A BCH (Bose, Ray-Chaudhuri, Hocquenghem) code is a much studied code within the study of coding theory and more specifically error-correcting codes. ... In information theory and coding, an error-correcting code or ECC is a code in which each data signal conforms to specific rules of construction so that departures from this construction in the received signal can generally be automatically detected and corrected. ... This article or section does not cite its references or sources. ...