>Dear all;
>
>After almost 2 years, one of my applications is not working…
>This particular one has a button which makes telephone calls using MSCOMM (AT commands)
>So far, so good. BUT! Until now, it wasn’t necessary to dial numbers with more than 10 digits (US standard). Now they have to call 1-800 numbers (11 digits), and mi “dialer” doesn’t work! (Your call cannot be completed as dialed….) I verified the numbers, all valid.
>I thought it could be the switchboard, but if you dial manually…it works fine, so, I have not idea what’s going on.
>Any help on this?
>Thank you,

I haven't used MSCOMM for dialing, but try putting in a comma or two after the "1", before the "800". A comma is a 2 second pause for AT commands.