from what I can tell there may be a couple of things to try. When you said it did not send packet how did you determine that? Were you on the VM ext listening for tones? Here is what I suggest you do to test this. If you are using ONS integration and can monitor VM ports to listen for toned digit strings take one ext and forward it to each individual VM port and make sure that you get the ONS toned digit string. Sounds like possibly you have an ext for the VMS that is not programmed correctly. If that works then find an extension that is not working and one that is and simply swap the cards (do not reprogrammed to vacant port) and see if the problem follows the card. Not too sure what else might be causing the problem.