Yes Angelo,
you can use them but,
just keep in mind the full implications of using them for control op commands because you probably do not have ABCD on your phone control system.

...mike/kb8jnm
-------- Original Message --------
Subject: [App_rpt-users] DTMF A B C D
From: Angelo Glorioso <n5uxt@hotmail.com>
Date: Sun, March 09, 2014 9:02 am
To: "Allstar app_rpt-users Group" <app_rpt-users@ohnosec.org>

Hi all,
 
I realized this has never been asked or I just can't find the answer.
Can the A B C D on the DTMF pad be used for control codes??
 
73 de Angelo
 
 
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