04553262 is referenced by 62 patents and cites 18 patents.

An improved multifrequency trunked, two-way communications system is provided in which a plurality of conventional single channel radio units are provided access. The system includes a predetermined number of information channels that are shared by a plurality of trunked stations. A trunked controller assigns one of the information channels to a requesting trunked mobile unit. The requesting trunked mobile unit is enabled to operate on the assigned channel in response thereto.

The improved communications system includes a radio access link which enables the single channel radio units to operate on an assigned information channel in the same manner as the trunked remote stations. The radio access link provides the plurality of conventional remote stations automatic access to the trunked system without requiring any modification of the conventional remote stations, and likewise without modification of the trunked remote stations and trunked controller.

Title
Communications system enabling radio link access for non-trunked radio units to a multifrequency trunked two-way communications systems
Application Number
6/555102
Publication Number
4553262
Application Date
November 25, 1983
Publication Date
November 12, 1985
Inventor
Richard H Coe
Crystal Lake
IL, US
Agent
James W Gillman
Edward M Roney
James E Jacobson Jr
Assignee
Motorola
IL, US
IPC
H04Q 7/02
H04B 7/26
H04B 7/155
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