TIA IS-89

Abstract

These standards detail definitions, methods of measurement, and minimum performance Characteristics of 800 MHz cellular land stations. These standards share the purpose of the Mobile Station - Land Station Compatibility Standard for Dual-Mode Narrowband Analog Cellular Technology (i.e. the "compatibility specification" and subsequent revisions there00 of assuring that cellular systems in conjunction with their land station equipment provide service to any subscriber unit that meets the compatibility requirements of the compatibility specification. <br>Compatibility, as used in connection with these standards and the compatibility specification. is understood to mean: Cellular systems with their associated land stations are capable of placing and receiving calls with any cellular subscriber unit. Conversely, any subscriber unit is capable of placing and receiving calls in the cellular system via the land station equipment. <br>To assure compatibility, it is essential that both radio-system parameters and call-processing parameters be specified. The speech-filtering, modulation, and RF-emission parameters commonly encountered in two-way radio systems have been updated and expanded to reflect the unique radio plan upon which cellular systems are based. The sequence of call-processing steps that the mobile and land stations execute to establish calls has been specified in the compatibility specification along with the digital control messages and analog signals that are exchanged between the two stations. <br>Although the basic purpose of cellular telecommunications has been voice communication, evolving usages (e.g.. data) may allow the omission of some of the features specified herein provided that the system compatibility is not compromised. <br>The narrow analog specifications are an extension to the standard wide analog operation. All narrow analog capable subscriber units shall be capable of standard wide analog operation and meet all of the corresponding wide analog specifications. <br>These standards concentrate specifically on the land station radio transmitting and receiving equipment: they cover the cellular switch and the cell-control equipment only to the extent that compatibility with the compatibility specification is assured.