Motorola ST-853

The SmarTrunk II Digital Trunking System is designed to provide sophisticated trunking and telephone interconnect features using low cost two-way radio equipment at frequencies below 800 MHz.

The ST-853 Digital Trunking Controller performs all the signaling and trunking functions, including subscriber validation and call record accounting. The controller can be connected to any full duplex base station or repeater (one controller per channel), and may also be installed in parallel with a conventional tone panel.

For systems offering telephone interconnect, the ST-853 provides the interface between the base radio and the telephone system or PABX, making SmarTrunk II an ideal solution for in-plant paging systems.