Telephone is primary,the only way you may know is if you listen on a local town and hear the request, after a town makes a requests they get the equiptment they need and roll out whatever equiptment will fit the job - then they will call out at a scene on CH 3 listed as Sheriff Transportation 477.1875 and any further requests get done by cell phones, this unit seems to work very well with the County and local Police
no they dont have patrol jurisdiction