the motorola version of this is/was called MDC1200. Other brands called it different forms of ANI
Can be heard at the beginning and some times the end of each transmission
Yep, that's the one I know of for Motorola. It was all just a matter of programming whether you wanted it before or after. All a matter of preference. The only thing with programming it before is you have to wait a second or two before you speak. Most of the radios you can turn on a beep when you key it.. when it stops beeping you can then talk, meaning it completed its digital transmission. We had it on before, I guess so the dispatcher can see who is talking as they are speaking.