Disabling modem speaker

Hi everyone!
I’ve got question about disabling modem speaker under qnx 6.x.
My modem is an external Zoltrix Rainbow. It was succesfuly
recognized and installed but…
On the tab on which you can “customize” your modem’s settings
there is a checkbox “speaker on” to dis/enable modem speaker.
Everything was ok until I tried to turn modem speaker off.
Problem is that whether this option is checked or not, it is
always enabled.
How to make it turn the speaker off.
By the way, when I first installed qnx 5 it worked.
Please help.
Thanks.

“scout” <scout53@wp.pl> wrote in message news:3BC457EC.2070206@wp.pl

By the way, when I first installed qnx 5 it worked.
Please help.
Thanks.

QNX 5 ?

Why don’t I have that one? ;~}