| 摘要 |
The present invention contemplates an improved dispatch trunked radio system which provides for individual subscriber to subscriber communication as well other enhanced trunking features. An expanded "dual-word" signalling protocol provides an improvement over prior "single word" signalling protocols by increasing the versatility of commands which may be communicated between the components of the trunked radio system. The "dual-word" signalling protocol of the present invention remains compatible with prior "single-word" subscriber units.
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