It was the option (I believe GSM based) that when enabled would send ALL incoming calls to a busy signal. It was something you could set up on a profile.

I had it across almost all of the 4.6 releases....really missing it on the 5.

It's in Options, Security Options, Firewall for me in 5.0.0.314. It may have moved since 4.6 but that's where it is now.

From your description that sounds like what you are looking for.

I havent seen this on a bold on 4.6 in profiles.
call divert however, i have seen.

I am missing this too. On my "Silent" profile on my curve, I had "Ignore" (I think that was what it was) selected in that profile. It was the equivalent of pushing the End key and sending someone to VM immediately.

Unless I am missing it, that is gone in 4.7 and up profiles.