The caller can listen to several recorded messages on common SW-846 topics and leave a message containing a question or comment.

And then the caller can listen to that phone ring endlessly.

But this caller had listened to the tape and then didn't hang up until after the beep.

Ed Staiano, Motorola's executive vice president, said researchers spent five years reducing the size and weight of the phone's components - in particular, the oscillator and duplexer, which allow a caller to talk and listen at the same time.

The callers will listen, he says, and then reply, "O.K., when can we start?"

The advertiser pays when a caller listens to their advertisement, the equivalent of Internet CPM advertising, when they ask for additional information, or when they place a call.

At a public pay phone, callers should listen for the recording that identifies the phone company.

Mr. Gacy received more mail - and methodically answered it - than any other inmate at the prison, and for $23.88 callers could dial a 900 line and, for 12 minutes, listen to his soft voice denying the crimes.

Motorola, the electronics giant in Schaumburg, Ill., said that its researchers spent five years reducing the size and weight of the phone's components - in particular, the oscillator and the duplexer, which allow a caller to talk and listen at the same time.

'The caller on ... er ... all the lines 'Here, someone's You listen to me, young man!