I'd like to know how to block my Caller ID on an outbound call. The guide here says to precede the call with *67 when dialing. When I tried that, I get a recording saying "all switches are busy". So I tried pressing "send" right after the *67, before dialing the number, and got a recording saying the number could not be connected as dialed.
So what is the correct method of blocking an outbound Caller ID?