TIA/EIA/IS-90:1993

$33.15

Recommended Minimum Standard for 800 MHz Dual-Mode Narrowband Analog Cellular Subscriber Units

Published By	Publication Date	Number of Pages
TIA	1993	59

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Description

These standards detail definitions, methods of measurement, and
minimum performance characteristics of 800-MHz cellular subscriber
units. 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 thereof) of assuring that a subscriber unit
can obtain service in any cellular system that meets the
compatibility requirements of the compatibility specification.

Compatibility, as used in connection with these standards and
the compatibility specification, is understood to mean: Any
subscriber unit is able to place and receive calls in any cellular
system. Conversely, all cellular systems are able to place and
receive calls with any subscriber unit.

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.

A subscriber unit is intended to be used while in motion or
during halts at unspecified points. It is assumed that subscriber
units include portable units (e.g., hand-held "personal" units) as
well as units installed in vehicles.

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.

These standards concentrate specifically on the Subscriber Unit;
they cover the operation of the land station, the cellular switch,
and the cell control equipment only to the extent that
compatibility with the compatibility specification is assured.

Additional information