We have the latest IVM and the latest Curl Url 4 port board with the latest drivers (3.2.0).
We have problems with spurious DTMF signals making a mess of our incoming message handling.
NCH have mentioned this problem in the technical/FAq sections as follows
A recurrent problem is where the modem or telephony card will hear one of these tones just in the normal speaking voice of the person recording a message and stop or rewind a recording. This happens due to the design of the drivers for the modem or telephony card and is not a part of IVM or Dial Dictate.
For some hardware (CallURL recently) there are updated drivers that can change this sensitivity. In this case, you will need to download and install the new drivers. In a minority of cases you may configure the sensitivity, however most hardware does not provide this control.
So from what I understand, the CurlUrl board/Easy Tapi drivers are responsible for this problem, not any settigs in IVM to do with DTMF.
Question is, what do I change to fix this problem, anyone know ?
(I have been all over the curlurl site but haven't found a reference to this)