DYNAMIC LENGTH REDUCTION OF DATA CHANNEL PREAMBLE ON A CHANNEL SCANNING INTEGRATED VOICE AND DATA SYSTEM
Original Publication Date: 1999-Jun-01
Included in the Prior Art Database: 2002-Aug-13
In an APCO 25, conventional (non-trunked), voice and data radio system a radio is able to listen to only one radio channel at a time. At times users have more than one channel that contains voice traf- fic of interest to them. Due to this need, radios uti- lize a scanning algorithm where the radio sequen- tially checks each frequency in its scan list to test for available voice traffic. This provides the users with an ability to listen to traffic on multiple chan- nels without a need to manually change the channel of the radio.