UC 520 fax detection

[gregatatt]

Hi -

A while back, someone posted ...

"

Bill.Lopez@Strategic-VA.com Oct 27, 2009 10:02 PM

I  can fax good in but when I call the number I hear the prompt like I  should but when I press a button or just wait the 9 seconds it  disconnects my call. Any idea??

Thanks

"

A reply suggested he post his question here instead. I have not been able to find a reply, and I am having the same isssue.

Can someone help with the question?

Thanks!

Greg