Systems considerations in the expansion of a low capacity tone: Paging system through time sharing with high capacity signaling

Abstract
Many existing 2-tone, possibly 3-tone Bellboy®, paging systems in our metropolitan areas have reached system capacity. By allocating a small percentage of air time for a higher signaling rate and larger code capacity pager, channel capacity can be increased several times. The low capacity pager can then be phased out slowly allowing graceful systems growth. The resultant system false alarm rates caused by this channel sharing of several signaling types is discussed along with the sequential and simulcast transmission effects. The sequential 5-tone system and several generalized digital techniques are considered in this evluation.

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