I have an NEC IPK with a 4 Port VMP (DOS) voicemail card. When a caller is transferred direct to a voicemail box, he hears the personal greeting and then a beep followed by more beeps and can never leave a message. It is happening on multiple mailboxes. At times after the first beep, you hear just silence but you are not able to leave a message. After that first beep, you hear a funny sound almost like a disconnect. I've tried replacing the voicemail card and it has the exact same problem leading me to believe it's more in the processor. Not sure what it can be.