I searched the forums and couldn't find my problem. Maybe someone's willing to help an old-timer who hasn't been on the board for ages.

My T-Mo 600 rarely can make calls. It will dial, then make (I think) 3 wierd dings in the earphone (2 different pitches) then just disconnect. I've turned wireless off and on, and I've even reset, but it doesn't seem to help. I thought it might have to do with battery level, but I've seen it happen on a nearly full charge.

I haven't upgraded the ROM. Was this symptom one of the things fixed?