We can TA and TL on ours, ask for a normal or urgent callback and do all the other bits like book refs, book off duty, unavailable at court etc.
Are you using Sepura's dick?
We use the sepura SRP 3500 GPS. (Nice set)
Anyone who's using sepuras who doesn't know, if you press and hold 5 it makes the display writing bigger, and pressing and holding 9 flips the display upside down.
There are other features on the fast keys but we dont use them.
rob you can also use them as a mobile phone by pre-fixing the number you want by 9 and then the down button phone to phone and then the green
I use the 7 and 9 key to change channels as I cover two divisions.